diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/README.md b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/README.md
index a9705c567d90..6a97ef2697b4 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/README.md
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/README.md
@@ -93,6 +93,164 @@ console.log( v );
+
+
+* * *
+
+
+
+## C APIs
+
+
+
+
+
+
+
+
+
+
+
+### Usage
+
+```c
+#include "stdlib/blas/ext/base/ndarray/csumkbn.h"
+```
+
+#### stdlib_blas_ext_csumkbn( arrays )
+
+Computes the sum of all elements in a one-dimensional single-precision complex floating-point ndarray using an improved Kahan–Babuška algorithm.
+
+```c
+#include "stdlib/complex/float32/ctor.h"
+#include "stdlib/ndarray/ctor.h"
+#include "stdlib/ndarray/dtypes.h"
+#include "stdlib/ndarray/index_modes.h"
+#include "stdlib/ndarray/orders.h"
+#include "stdlib/ndarray/base/bytes_per_element.h"
+#include "stdlib/complex/float32/real.h"
+#include "stdlib/complex/float32/imag.h"
+#include
+
+// Create an ndarray:
+const float data[] = { 1.0f, 2.0f, 3.0f, 4.0f };
+int64_t shape[] = { 2 };
+int64_t strides[] = { STDLIB_NDARRAY_COMPLEX64_BYTES_PER_ELEMENT };
+int8_t submodes[] = { STDLIB_NDARRAY_INDEX_ERROR };
+
+struct ndarray *x = stdlib_ndarray_allocate( STDLIB_NDARRAY_COMPLEX64, (uint8_t *)data, 1, shape, strides, 0, STDLIB_NDARRAY_ROW_MAJOR, STDLIB_NDARRAY_INDEX_ERROR, 1, submodes );
+
+// Compute the sum:
+const struct ndarray *arrays[] = { x };
+stdlib_complex64_t v = stdlib_blas_ext_csumkbn( arrays );
+
+float re = stdlib_complex64_real( v );
+// returns 4.0f
+
+float im = stdlib_complex64_imag( v );
+// returns 6.0f
+
+// Free allocated memory:
+stdlib_ndarray_free( x );
+```
+
+The function accepts the following arguments:
+
+- **arrays**: `[in] struct ndarray**` list containing a one-dimensional input ndarray.
+
+```c
+stdlib_complex64_t stdlib_blas_ext_csumkbn( const struct ndarray *arrays[] );
+```
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+### Examples
+
+```c
+#include "stdlib/blas/ext/base/ndarray/csumkbn.h"
+#include "stdlib/complex/float32/ctor.h"
+#include "stdlib/complex/float32/real.h"
+#include "stdlib/complex/float32/imag.h"
+#include "stdlib/ndarray/ctor.h"
+#include "stdlib/ndarray/dtypes.h"
+#include "stdlib/ndarray/index_modes.h"
+#include "stdlib/ndarray/orders.h"
+#include "stdlib/ndarray/base/bytes_per_element.h"
+#include
+#include
+#include
+
+int main( void ) {
+ // Create a data buffer:
+ const float data[] = { 16777216.0f, 16777216.0f, 1.0f, 2.0f, -16777216.0f, -16777216.0f };
+
+ // Specify the number of array dimensions:
+ const int64_t ndims = 1;
+
+ // Specify the array shape:
+ int64_t shape[] = { 3 };
+
+ // Specify the array strides:
+ int64_t strides[] = { STDLIB_NDARRAY_COMPLEX64_BYTES_PER_ELEMENT };
+
+ // Specify the byte offset:
+ const int64_t offset = 0;
+
+ // Specify the array order:
+ const enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;
+
+ // Specify the index mode:
+ const enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;
+
+ // Specify the subscript index modes:
+ int8_t submodes[] = { STDLIB_NDARRAY_INDEX_ERROR };
+ const int64_t nsubmodes = 1;
+
+ // Create an ndarray:
+ struct ndarray *x = stdlib_ndarray_allocate( STDLIB_NDARRAY_COMPLEX64, (uint8_t *)data, ndims, shape, strides, offset, order, imode, nsubmodes, submodes );
+ if ( x == NULL ) {
+ fprintf( stderr, "Error allocating memory.\n" );
+ exit( 1 );
+ }
+
+ // Define a list of ndarrays:
+ const struct ndarray *arrays[] = { x };
+
+ // Compute the sum:
+ stdlib_complex64_t v = stdlib_blas_ext_csumkbn( arrays );
+
+ // Print the result:
+ printf( "sum: %f + %fi\n", stdlib_complex64_real( v ), stdlib_complex64_imag( v ) );
+
+ // Free allocated memory:
+ stdlib_ndarray_free( x );
+}
+```
+
+
+
+
+
+
+
+
+
## References
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/benchmark/benchmark.native.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/benchmark/benchmark.native.js
new file mode 100644
index 000000000000..d7924a7bd282
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/benchmark/benchmark.native.js
@@ -0,0 +1,115 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var resolve = require( 'path' ).resolve;
+var bench = require( '@stdlib/bench' );
+var uniform = require( '@stdlib/random/array/uniform' );
+var isnanf = require( '@stdlib/math/base/assert/is-nanf' );
+var realf = require( '@stdlib/complex/float32/real' );
+var imagf = require( '@stdlib/complex/float32/imag' );
+var pow = require( '@stdlib/math/base/special/pow' );
+var Complex64Vector = require( '@stdlib/ndarray/vector/complex64' );
+var format = require( '@stdlib/string/format' );
+var tryRequire = require( '@stdlib/utils/try-require' );
+var pkg = require( './../package.json' ).name;
+
+
+// VARIABLES //
+
+var csumkbn = tryRequire( resolve( __dirname, './../lib/native.js' ) );
+var opts = {
+ 'skip': ( csumkbn instanceof Error )
+};
+
+
+// FUNCTIONS //
+
+/**
+* Creates a benchmark function.
+*
+* @private
+* @param {PositiveInteger} len - array length
+* @returns {Function} benchmark function
+*/
+function createBenchmark( len ) {
+ var xbuf;
+ var x;
+
+ xbuf = uniform( len*2, -10.0, 10.0, {
+ 'dtype': 'float32'
+ });
+ x = new Complex64Vector( xbuf.buffer );
+
+ return benchmark;
+
+ /**
+ * Benchmark function.
+ *
+ * @private
+ * @param {Benchmark} b - benchmark instance
+ */
+ function benchmark( b ) {
+ var v;
+ var i;
+
+ b.tic();
+ for ( i = 0; i < b.iterations; i++ ) {
+ v = csumkbn( [ x ] );
+ if ( isnanf( realf( v ) ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ }
+ b.toc();
+ if ( isnanf( imagf( v ) ) ) {
+ b.fail( 'should not return NaN' );
+ }
+ b.pass( 'benchmark finished' );
+ b.end();
+ }
+}
+
+
+// MAIN //
+
+/**
+* Main execution sequence.
+*
+* @private
+*/
+function main() {
+ var len;
+ var min;
+ var max;
+ var f;
+ var i;
+
+ min = 1; // 10^min
+ max = 6; // 10^max
+
+ for ( i = min; i <= max; i++ ) {
+ len = pow( 10, i );
+ f = createBenchmark( len );
+ bench( format( '%s::native:len=%d', pkg, len ), opts, f );
+ }
+}
+
+main();
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/benchmark/c/Makefile b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/benchmark/c/Makefile
new file mode 100644
index 000000000000..0756dc7da20a
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/benchmark/c/Makefile
@@ -0,0 +1,146 @@
+#/
+# @license Apache-2.0
+#
+# Copyright (c) 2026 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#/
+
+# VARIABLES #
+
+ifndef VERBOSE
+ QUIET := @
+else
+ QUIET :=
+endif
+
+# Determine the OS ([1][1], [2][2]).
+#
+# [1]: https://en.wikipedia.org/wiki/Uname#Examples
+# [2]: http://stackoverflow.com/a/27776822/2225624
+OS ?= $(shell uname)
+ifneq (, $(findstring MINGW,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring MSYS,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring CYGWIN,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring Windows_NT,$(OS)))
+ OS := WINNT
+endif
+endif
+endif
+endif
+
+# Define the program used for compiling C source files:
+ifdef C_COMPILER
+ CC := $(C_COMPILER)
+else
+ CC := gcc
+endif
+
+# Define the command-line options when compiling C files:
+CFLAGS ?= \
+ -std=c99 \
+ -O3 \
+ -Wall \
+ -pedantic
+
+# Determine whether to generate position independent code ([1][1], [2][2]).
+#
+# [1]: https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html#Code-Gen-Options
+# [2]: http://stackoverflow.com/questions/5311515/gcc-fpic-option
+ifeq ($(OS), WINNT)
+ fPIC ?=
+else
+ fPIC ?= -fPIC
+endif
+
+# List of includes (e.g., `-I /foo/bar -I /beep/boop/include`):
+INCLUDE ?=
+
+# List of source files:
+SOURCE_FILES ?=
+
+# List of libraries (e.g., `-lopenblas -lpthread`):
+LIBRARIES ?=
+
+# List of library paths (e.g., `-L /foo/bar -L /beep/boop`):
+LIBPATH ?=
+
+# List of C targets:
+c_targets := benchmark.length.out
+
+
+# RULES #
+
+#/
+# Compiles source files.
+#
+# @param {string} [C_COMPILER] - C compiler (e.g., `gcc`)
+# @param {string} [CFLAGS] - C compiler options
+# @param {(string|void)} [fPIC] - compiler flag determining whether to generate position independent code (e.g., `-fPIC`)
+# @param {string} [INCLUDE] - list of includes (e.g., `-I /foo/bar -I /beep/boop/include`)
+# @param {string} [SOURCE_FILES] - list of source files
+# @param {string} [LIBPATH] - list of library paths (e.g., `-L /foo/bar -L /beep/boop`)
+# @param {string} [LIBRARIES] - list of libraries (e.g., `-lopenblas -lpthread`)
+#
+# @example
+# make
+#
+# @example
+# make all
+#/
+all: $(c_targets)
+
+.PHONY: all
+
+#/
+# Compiles C source files.
+#
+# @private
+# @param {string} CC - C compiler (e.g., `gcc`)
+# @param {string} CFLAGS - C compiler options
+# @param {(string|void)} fPIC - compiler flag determining whether to generate position independent code (e.g., `-fPIC`)
+# @param {string} INCLUDE - list of includes (e.g., `-I /foo/bar`)
+# @param {string} SOURCE_FILES - list of source files
+# @param {string} LIBPATH - list of library paths (e.g., `-L /foo/bar`)
+# @param {string} LIBRARIES - list of libraries (e.g., `-lopenblas`)
+#/
+$(c_targets): %.out: %.c
+ $(QUIET) $(CC) $(CFLAGS) $(fPIC) $(INCLUDE) -o $@ $(SOURCE_FILES) $< $(LIBPATH) -lm $(LIBRARIES)
+
+#/
+# Runs compiled benchmarks.
+#
+# @example
+# make run
+#/
+run: $(c_targets)
+ $(QUIET) ./$<
+
+.PHONY: run
+
+#/
+# Removes generated files.
+#
+# @example
+# make clean
+#/
+clean:
+ $(QUIET) -rm -f *.o *.out
+
+.PHONY: clean
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/benchmark/c/benchmark.length.c b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/benchmark/c/benchmark.length.c
new file mode 100644
index 000000000000..44d6c752ab0a
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/benchmark/c/benchmark.length.c
@@ -0,0 +1,193 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#include "stdlib/blas/ext/base/ndarray/csumkbn.h"
+#include "stdlib/complex/float32/ctor.h"
+#include "stdlib/complex/float32/real.h"
+#include "stdlib/complex/float32/imag.h"
+#include "stdlib/ndarray/ctor.h"
+#include "stdlib/ndarray/dtypes.h"
+#include "stdlib/ndarray/index_modes.h"
+#include "stdlib/ndarray/orders.h"
+#include "stdlib/ndarray/base/bytes_per_element.h"
+#include
+#include
+#include
+#include
+#include
+#include
+
+#define NAME "csumkbn"
+#define ITERATIONS 1000000
+#define REPEATS 3
+#define MIN 1
+#define MAX 6
+
+/**
+* Prints the TAP version.
+*/
+static void print_version( void ) {
+ printf( "TAP version 13\n" );
+}
+
+/**
+* Prints the TAP summary.
+*
+* @param total total number of tests
+* @param passing total number of passing tests
+*/
+static void print_summary( int total, int passing ) {
+ printf( "#\n" );
+ printf( "1..%d\n", total ); // TAP plan
+ printf( "# total %d\n", total );
+ printf( "# pass %d\n", passing );
+ printf( "#\n" );
+ printf( "# ok\n" );
+}
+
+/**
+* Prints benchmarks results.
+*
+* @param iterations number of iterations
+* @param elapsed elapsed time in seconds
+*/
+static void print_results( int iterations, double elapsed ) {
+ double rate = (double)iterations / elapsed;
+ printf( " ---\n" );
+ printf( " iterations: %d\n", iterations );
+ printf( " elapsed: %0.9f\n", elapsed );
+ printf( " rate: %0.9f\n", rate );
+ printf( " ...\n" );
+}
+
+/**
+* Returns a clock time.
+*
+* @return clock time
+*/
+static double tic( void ) {
+ struct timeval now;
+ gettimeofday( &now, NULL );
+ return (double)now.tv_sec + (double)now.tv_usec/1.0e6;
+}
+
+/**
+* Generates a random number on the interval [0,1).
+*
+* @return random number
+*/
+static float rand_float( void ) {
+ int r = rand();
+ return (float)r / ( (float)RAND_MAX + 1.0f );
+}
+
+/**
+* Runs a benchmark.
+*
+* @param iterations number of iterations
+* @param len array length
+* @return elapsed time in seconds
+*/
+static double benchmark( int iterations, int len ) {
+ enum STDLIB_NDARRAY_INDEX_MODE imode;
+ const struct ndarray *arrays[ 1 ];
+ enum STDLIB_NDARRAY_ORDER order;
+ int8_t submodes[ 1 ];
+ int64_t strides[ 1 ];
+ int64_t shape[ 1 ];
+ int64_t nsubmodes;
+ struct ndarray *x;
+ stdlib_complex64_t v;
+ int64_t offset;
+ double elapsed;
+ int64_t ndims;
+ float *data;
+ double t;
+ float r;
+ int i;
+
+ ndims = 1;
+ shape[ 0 ] = len;
+ strides[ 0 ] = STDLIB_NDARRAY_COMPLEX64_BYTES_PER_ELEMENT;
+ offset = 0;
+ order = STDLIB_NDARRAY_ROW_MAJOR;
+ imode = STDLIB_NDARRAY_INDEX_ERROR;
+ submodes[ 0 ] = imode;
+ nsubmodes = 1;
+
+ data = (float *) malloc( len * 2 * sizeof( float ) );
+ for ( i = 0; i < len*2; i += 2 ) {
+ r = ( rand_float() * 20000.0f ) - 10000.0f;
+ data[ i ] = r;
+ data[ i+1 ] = r;
+ }
+ // cppcheck-suppress invalidPointerCast
+ x = stdlib_ndarray_allocate( STDLIB_NDARRAY_COMPLEX64, (uint8_t *)data, ndims, shape, strides, offset, order, imode, nsubmodes, submodes );
+ arrays[ 0 ] = x;
+
+ v = stdlib_complex64( 0.0f, 0.0f );
+ t = tic();
+ for ( i = 0; i < iterations; i++ ) {
+ v = stdlib_blas_ext_csumkbn( arrays );
+ r = stdlib_complex64_real( v );
+ if ( r != r ) {
+ printf( "should not return NaN\n" );
+ break;
+ }
+ }
+ elapsed = tic() - t;
+ r = stdlib_complex64_imag( v );
+ if ( r != r ) {
+ printf( "should not return NaN\n" );
+ }
+ stdlib_ndarray_free( x );
+ free( data );
+ arrays[ 0 ] = NULL;
+
+ return elapsed;
+}
+
+/**
+* Main execution sequence.
+*/
+int main( void ) {
+ double elapsed;
+ int count;
+ int iter;
+ int len;
+ int i;
+ int j;
+
+ // Use the current time to seed the random number generator:
+ srand( time( NULL ) );
+
+ print_version();
+ count = 0;
+ for ( i = MIN; i <= MAX; i++ ) {
+ len = pow( 10, i );
+ iter = ITERATIONS / pow( 10, i-1 );
+ for ( j = 0; j < REPEATS; j++ ) {
+ count += 1;
+ printf( "# c::%s:len=%d\n", NAME, len );
+ elapsed = benchmark( iter, len );
+ print_results( iter, elapsed );
+ printf( "ok %d benchmark finished\n", count );
+ }
+ }
+ print_summary( count, count );
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/binding.gyp b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/binding.gyp
new file mode 100644
index 000000000000..0d6508a12e99
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/binding.gyp
@@ -0,0 +1,170 @@
+# @license Apache-2.0
+#
+# Copyright (c) 2026 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# A `.gyp` file for building a Node.js native add-on.
+#
+# [1]: https://gyp.gsrc.io/docs/InputFormatReference.md
+# [2]: https://gyp.gsrc.io/docs/UserDocumentation.md
+{
+ # List of files to include in this file:
+ 'includes': [
+ './include.gypi',
+ ],
+
+ # Define variables to be used throughout the configuration for all targets:
+ 'variables': {
+ # Target name should match the add-on export name:
+ 'addon_target_name%': 'addon',
+
+ # Set variables based on the host OS:
+ 'conditions': [
+ [
+ 'OS=="win"',
+ {
+ # Define the object file suffix:
+ 'obj': 'obj',
+ },
+ {
+ # Define the object file suffix:
+ 'obj': 'o',
+ }
+ ], # end condition (OS=="win")
+ ], # end conditions
+ }, # end variables
+
+ # Define compile targets:
+ 'targets': [
+
+ # Target to generate an add-on:
+ {
+ # The target name should match the add-on export name:
+ 'target_name': '<(addon_target_name)',
+
+ # Define dependencies:
+ 'dependencies': [],
+
+ # Define directories which contain relevant include headers:
+ 'include_dirs': [
+ # Local include directory:
+ '<@(include_dirs)',
+ ],
+
+ # List of source files:
+ 'sources': [
+ '<@(src_files)',
+ ],
+
+ # Settings which should be applied when a target's object files are used as linker input:
+ 'link_settings': {
+ # Define libraries:
+ 'libraries': [
+ '<@(libraries)',
+ ],
+
+ # Define library directories:
+ 'library_dirs': [
+ '<@(library_dirs)',
+ ],
+ },
+
+ # C/C++ compiler flags:
+ 'cflags': [
+ # Enable commonly used warning options:
+ '-Wall',
+
+ # Aggressive optimization:
+ '-O3',
+ ],
+
+ # C specific compiler flags:
+ 'cflags_c': [
+ # Specify the C standard to which a program is expected to conform:
+ '-std=c99',
+ ],
+
+ # C++ specific compiler flags:
+ 'cflags_cpp': [
+ # Specify the C++ standard to which a program is expected to conform:
+ '-std=c++11',
+ ],
+
+ # Linker flags:
+ 'ldflags': [],
+
+ # Apply conditions based on the host OS:
+ 'conditions': [
+ [
+ 'OS=="mac"',
+ {
+ # Linker flags:
+ 'ldflags': [
+ '-undefined dynamic_lookup',
+ '-Wl,-no-pie',
+ '-Wl,-search_paths_first',
+ ],
+ },
+ ], # end condition (OS=="mac")
+ [
+ 'OS!="win"',
+ {
+ # C/C++ flags:
+ 'cflags': [
+ # Generate platform-independent code:
+ '-fPIC',
+ ],
+ },
+ ], # end condition (OS!="win")
+ ], # end conditions
+ }, # end target <(addon_target_name)
+
+ # Target to copy a generated add-on to a standard location:
+ {
+ 'target_name': 'copy_addon',
+
+ # Declare that the output of this target is not linked:
+ 'type': 'none',
+
+ # Define dependencies:
+ 'dependencies': [
+ # Require that the add-on be generated before building this target:
+ '<(addon_target_name)',
+ ],
+
+ # Define a list of actions:
+ 'actions': [
+ {
+ 'action_name': 'copy_addon',
+ 'message': 'Copying addon...',
+
+ # Explicitly list the inputs in the command-line invocation below:
+ 'inputs': [],
+
+ # Declare the expected outputs:
+ 'outputs': [
+ '<(addon_output_dir)/<(addon_target_name).node',
+ ],
+
+ # Define the command-line invocation:
+ 'action': [
+ 'cp',
+ '<(PRODUCT_DIR)/<(addon_target_name).node',
+ '<(addon_output_dir)/<(addon_target_name).node',
+ ],
+ },
+ ], # end actions
+ }, # end target copy_addon
+ ], # end targets
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/examples/c/Makefile b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/examples/c/Makefile
new file mode 100644
index 000000000000..c8f8e9a1517b
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/examples/c/Makefile
@@ -0,0 +1,146 @@
+#/
+# @license Apache-2.0
+#
+# Copyright (c) 2026 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#/
+
+# VARIABLES #
+
+ifndef VERBOSE
+ QUIET := @
+else
+ QUIET :=
+endif
+
+# Determine the OS ([1][1], [2][2]).
+#
+# [1]: https://en.wikipedia.org/wiki/Uname#Examples
+# [2]: http://stackoverflow.com/a/27776822/2225624
+OS ?= $(shell uname)
+ifneq (, $(findstring MINGW,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring MSYS,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring CYGWIN,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring Windows_NT,$(OS)))
+ OS := WINNT
+endif
+endif
+endif
+endif
+
+# Define the program used for compiling C source files:
+ifdef C_COMPILER
+ CC := $(C_COMPILER)
+else
+ CC := gcc
+endif
+
+# Define the command-line options when compiling C files:
+CFLAGS ?= \
+ -std=c99 \
+ -O3 \
+ -Wall \
+ -pedantic
+
+# Determine whether to generate position independent code ([1][1], [2][2]).
+#
+# [1]: https://gcc.gnu.org/onlinedocs/gcc/Code-Gen-Options.html#Code-Gen-Options
+# [2]: http://stackoverflow.com/questions/5311515/gcc-fpic-option
+ifeq ($(OS), WINNT)
+ fPIC ?=
+else
+ fPIC ?= -fPIC
+endif
+
+# List of includes (e.g., `-I /foo/bar -I /beep/boop/include`):
+INCLUDE ?=
+
+# List of source files:
+SOURCE_FILES ?=
+
+# List of libraries (e.g., `-lopenblas -lpthread`):
+LIBRARIES ?=
+
+# List of library paths (e.g., `-L /foo/bar -L /beep/boop`):
+LIBPATH ?=
+
+# List of C targets:
+c_targets := example.out
+
+
+# RULES #
+
+#/
+# Compiles source files.
+#
+# @param {string} [C_COMPILER] - C compiler (e.g., `gcc`)
+# @param {string} [CFLAGS] - C compiler options
+# @param {(string|void)} [fPIC] - compiler flag determining whether to generate position independent code (e.g., `-fPIC`)
+# @param {string} [INCLUDE] - list of includes (e.g., `-I /foo/bar -I /beep/boop/include`)
+# @param {string} [SOURCE_FILES] - list of source files
+# @param {string} [LIBPATH] - list of library paths (e.g., `-L /foo/bar -L /beep/boop`)
+# @param {string} [LIBRARIES] - list of libraries (e.g., `-lopenblas -lpthread`)
+#
+# @example
+# make
+#
+# @example
+# make all
+#/
+all: $(c_targets)
+
+.PHONY: all
+
+#/
+# Compiles C source files.
+#
+# @private
+# @param {string} CC - C compiler (e.g., `gcc`)
+# @param {string} CFLAGS - C compiler options
+# @param {(string|void)} fPIC - compiler flag determining whether to generate position independent code (e.g., `-fPIC`)
+# @param {string} INCLUDE - list of includes (e.g., `-I /foo/bar`)
+# @param {string} SOURCE_FILES - list of source files
+# @param {string} LIBPATH - list of library paths (e.g., `-L /foo/bar`)
+# @param {string} LIBRARIES - list of libraries (e.g., `-lopenblas`)
+#/
+$(c_targets): %.out: %.c
+ $(QUIET) $(CC) $(CFLAGS) $(fPIC) $(INCLUDE) -o $@ $(SOURCE_FILES) $< $(LIBPATH) -lm $(LIBRARIES)
+
+#/
+# Runs compiled examples.
+#
+# @example
+# make run
+#/
+run: $(c_targets)
+ $(QUIET) ./$<
+
+.PHONY: run
+
+#/
+# Removes generated files.
+#
+# @example
+# make clean
+#/
+clean:
+ $(QUIET) -rm -f *.o *.out
+
+.PHONY: clean
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/examples/c/example.c b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/examples/c/example.c
new file mode 100644
index 000000000000..177f4dcbaa06
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/examples/c/example.c
@@ -0,0 +1,77 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#include "stdlib/blas/ext/base/ndarray/csumkbn.h"
+#include "stdlib/complex/float32/ctor.h"
+#include "stdlib/complex/float32/real.h"
+#include "stdlib/complex/float32/imag.h"
+#include "stdlib/ndarray/ctor.h"
+#include "stdlib/ndarray/dtypes.h"
+#include "stdlib/ndarray/index_modes.h"
+#include "stdlib/ndarray/orders.h"
+#include "stdlib/ndarray/base/bytes_per_element.h"
+#include
+#include
+#include
+
+int main( void ) {
+ // Create a data buffer:
+ const float data[] = { 16777216.0f, 16777216.0f, 1.0f, 2.0f, -16777216.0f, -16777216.0f };
+
+ // Specify the number of array dimensions:
+ const int64_t ndims = 1;
+
+ // Specify the array shape:
+ int64_t shape[] = { 3 };
+
+ // Specify the array strides:
+ int64_t strides[] = { STDLIB_NDARRAY_COMPLEX64_BYTES_PER_ELEMENT };
+
+ // Specify the byte offset:
+ const int64_t offset = 0;
+
+ // Specify the array order:
+ const enum STDLIB_NDARRAY_ORDER order = STDLIB_NDARRAY_ROW_MAJOR;
+
+ // Specify the index mode:
+ const enum STDLIB_NDARRAY_INDEX_MODE imode = STDLIB_NDARRAY_INDEX_ERROR;
+
+ // Specify the subscript index modes:
+ int8_t submodes[] = { STDLIB_NDARRAY_INDEX_ERROR };
+ const int64_t nsubmodes = 1;
+
+ // Create an ndarray:
+ // cppcheck-suppress invalidPointerCast
+ struct ndarray *x = stdlib_ndarray_allocate( STDLIB_NDARRAY_COMPLEX64, (uint8_t *)data, ndims, shape, strides, offset, order, imode, nsubmodes, submodes );
+ if ( x == NULL ) {
+ fprintf( stderr, "Error allocating memory.\n" );
+ exit( 1 );
+ }
+
+ // Define a list of ndarrays:
+ const struct ndarray *arrays[] = { x };
+
+ // Compute the sum:
+ stdlib_complex64_t v = stdlib_blas_ext_csumkbn( arrays );
+
+ // Print the result:
+ printf( "sum: %f + %fi\n", stdlib_complex64_real( v ), stdlib_complex64_imag( v ) );
+
+ // Free allocated memory:
+ stdlib_ndarray_free( x );
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/include.gypi b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/include.gypi
new file mode 100644
index 000000000000..bee8d41a2caf
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/include.gypi
@@ -0,0 +1,53 @@
+# @license Apache-2.0
+#
+# Copyright (c) 2026 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+# A GYP include file for building a Node.js native add-on.
+#
+# Main documentation:
+#
+# [1]: https://gyp.gsrc.io/docs/InputFormatReference.md
+# [2]: https://gyp.gsrc.io/docs/UserDocumentation.md
+{
+ # Define variables to be used throughout the configuration for all targets:
+ 'variables': {
+ # Source directory:
+ 'src_dir': './src',
+
+ # Include directories:
+ 'include_dirs': [
+ '} arrays - array-like object containing ndarrays
+* @returns {Complex64} sum
+*
+* @example
+* var Complex64Vector = require( '@stdlib/ndarray/vector/complex64' );
+*
+* var x = new Complex64Vector( [ 1.0, 3.0, 4.0, 2.0 ] );
+*
+* var v = csumkbn( [ x ] );
+* // returns [ 5.0, 5.0 ]
+*/
+function csumkbn( arrays ) {
+ var x = arrays[ 0 ];
+ var o = addon( reinterpret( getData( x ), 0 ), serialize( x ) );
+ return new Complex64( o.re, o.im );
+}
+
+
+// EXPORTS //
+
+module.exports = csumkbn;
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/manifest.json b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/manifest.json
new file mode 100644
index 000000000000..46cd0b689bda
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/manifest.json
@@ -0,0 +1,120 @@
+{
+ "options": {
+ "task": "build",
+ "wasm": false
+ },
+ "fields": [
+ {
+ "field": "src",
+ "resolve": true,
+ "relative": true
+ },
+ {
+ "field": "include",
+ "resolve": true,
+ "relative": true
+ },
+ {
+ "field": "libraries",
+ "resolve": false,
+ "relative": false
+ },
+ {
+ "field": "libpath",
+ "resolve": true,
+ "relative": false
+ }
+ ],
+ "confs": [
+ {
+ "task": "build",
+ "wasm": false,
+ "src": [
+ "./src/main.c"
+ ],
+ "include": [
+ "./include"
+ ],
+ "libraries": [],
+ "libpath": [],
+ "dependencies": [
+ "@stdlib/blas/base/shared",
+ "@stdlib/blas/ext/base/csumkbn",
+ "@stdlib/complex/float32/ctor",
+ "@stdlib/complex/float32/real",
+ "@stdlib/complex/float32/imag",
+ "@stdlib/ndarray/ctor",
+ "@stdlib/ndarray/base/napi/addon-arguments",
+ "@stdlib/napi/export",
+ "@stdlib/napi/argv",
+ "@stdlib/napi/create-complex-like"
+ ]
+ },
+ {
+ "task": "benchmark",
+ "wasm": false,
+ "src": [
+ "./src/main.c"
+ ],
+ "include": [
+ "./include"
+ ],
+ "libraries": [],
+ "libpath": [],
+ "dependencies": [
+ "@stdlib/blas/base/shared",
+ "@stdlib/blas/ext/base/csumkbn",
+ "@stdlib/complex/float32/ctor",
+ "@stdlib/complex/float32/real",
+ "@stdlib/complex/float32/imag",
+ "@stdlib/ndarray/ctor",
+ "@stdlib/ndarray/dtypes",
+ "@stdlib/ndarray/index-modes",
+ "@stdlib/ndarray/orders",
+ "@stdlib/ndarray/base/bytes-per-element"
+ ]
+ },
+ {
+ "task": "examples",
+ "wasm": false,
+ "src": [
+ "./src/main.c"
+ ],
+ "include": [
+ "./include"
+ ],
+ "libraries": [],
+ "libpath": [],
+ "dependencies": [
+ "@stdlib/blas/base/shared",
+ "@stdlib/blas/ext/base/csumkbn",
+ "@stdlib/complex/float32/ctor",
+ "@stdlib/complex/float32/real",
+ "@stdlib/complex/float32/imag",
+ "@stdlib/ndarray/ctor",
+ "@stdlib/ndarray/dtypes",
+ "@stdlib/ndarray/index-modes",
+ "@stdlib/ndarray/orders",
+ "@stdlib/ndarray/base/bytes-per-element"
+ ]
+ },
+ {
+ "task": "",
+ "wasm": true,
+ "src": [
+ "./src/main.c"
+ ],
+ "include": [
+ "./include"
+ ],
+ "libraries": [],
+ "libpath": [],
+ "dependencies": [
+ "@stdlib/blas/base/shared",
+ "@stdlib/blas/ext/base/csumkbn",
+ "@stdlib/complex/float32/ctor",
+ "@stdlib/ndarray/ctor"
+ ]
+ }
+ ]
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/package.json b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/package.json
index 9bf6d2ddafd5..d1c69b2d8b15 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/package.json
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/package.json
@@ -14,11 +14,15 @@
}
],
"main": "./lib",
+ "browser": "./lib/main.js",
+ "gypfile": true,
"directories": {
"benchmark": "./benchmark",
"doc": "./docs",
"example": "./examples",
+ "include": "./include",
"lib": "./lib",
+ "src": "./src",
"test": "./test"
},
"types": "./docs/types",
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/src/Makefile b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/src/Makefile
new file mode 100644
index 000000000000..2caf905cedbe
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/src/Makefile
@@ -0,0 +1,70 @@
+#/
+# @license Apache-2.0
+#
+# Copyright (c) 2026 The Stdlib Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#/
+
+# VARIABLES #
+
+ifndef VERBOSE
+ QUIET := @
+else
+ QUIET :=
+endif
+
+# Determine the OS ([1][1], [2][2]).
+#
+# [1]: https://en.wikipedia.org/wiki/Uname#Examples
+# [2]: http://stackoverflow.com/a/27776822/2225624
+OS ?= $(shell uname)
+ifneq (, $(findstring MINGW,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring MSYS,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring CYGWIN,$(OS)))
+ OS := WINNT
+else
+ifneq (, $(findstring Windows_NT,$(OS)))
+ OS := WINNT
+endif
+endif
+endif
+endif
+
+
+# RULES #
+
+#/
+# Removes generated files for building an add-on.
+#
+# @example
+# make clean-addon
+#/
+clean-addon:
+ $(QUIET) -rm -f *.o *.node
+
+.PHONY: clean-addon
+
+#/
+# Removes generated files.
+#
+# @example
+# make clean
+#/
+clean: clean-addon
+
+.PHONY: clean
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/src/addon.c b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/src/addon.c
new file mode 100644
index 000000000000..3ca6f8da6e7c
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/src/addon.c
@@ -0,0 +1,63 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#include "stdlib/blas/ext/base/ndarray/csumkbn.h"
+#include "stdlib/complex/float32/ctor.h"
+#include "stdlib/complex/float32/real.h"
+#include "stdlib/complex/float32/imag.h"
+#include "stdlib/ndarray/ctor.h"
+#include "stdlib/ndarray/base/napi/addon_arguments.h"
+#include "stdlib/napi/export.h"
+#include "stdlib/napi/argv.h"
+#include "stdlib/napi/create_complex_like.h"
+#include
+#include
+
+/**
+* Receives JavaScript callback invocation data.
+*
+* @param env environment under which the function is invoked
+* @param info callback data
+* @return Node-API value
+*/
+static napi_value addon( napi_env env, napi_callback_info info ) {
+ STDLIB_NAPI_ARGV( env, info, argv, argc, 2 );
+
+ // Process provided arguments:
+ struct ndarray *arrays[ 1 ];
+ napi_value err;
+ napi_status status = stdlib_ndarray_napi_addon_arguments( env, argv, 2, 1, arrays, &err );
+ assert( status == napi_ok );
+ if ( err != NULL ) {
+ status = napi_throw( env, err );
+ assert( status == napi_ok );
+ return NULL;
+ }
+ // Perform computation:
+ const struct ndarray *arr[ 1 ] = { arrays[ 0 ] };
+ stdlib_complex64_t z = stdlib_blas_ext_csumkbn( arr );
+ STDLIB_NAPI_CREATE_COMPLEX_LIKE( env, (double)stdlib_complex64_real( z ), (double)stdlib_complex64_imag( z ), v );
+
+ // Free allocated memory:
+ stdlib_ndarray_free( arrays[ 0 ] );
+ arrays[ 0 ] = NULL;
+
+ return v;
+}
+
+STDLIB_NAPI_MODULE_EXPORT_FCN( addon )
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/src/main.c b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/src/main.c
new file mode 100644
index 000000000000..11d709b74b92
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/src/main.c
@@ -0,0 +1,34 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2026 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+#include "stdlib/blas/ext/base/ndarray/csumkbn.h"
+#include "stdlib/blas/ext/base/csumkbn.h"
+#include "stdlib/complex/float32/ctor.h"
+#include "stdlib/ndarray/ctor.h"
+#include "stdlib/blas/base/shared.h"
+
+/**
+* Computes the sum of all elements in a one-dimensional single-precision complex floating-point ndarray using an improved Kahan–Babuška algorithm.
+*
+* @param arrays list containing an input ndarray
+* @return sum
+*/
+stdlib_complex64_t stdlib_blas_ext_csumkbn( const struct ndarray *arrays[] ) {
+ const struct ndarray *x = arrays[ 0 ];
+ return API_SUFFIX(stdlib_strided_csumkbn_ndarray)( stdlib_ndarray_dimension( x, 0 ), (const stdlib_complex64_t *)stdlib_ndarray_data( x ), stdlib_ndarray_stride_elements( x, 0 ), stdlib_ndarray_offset_elements( x ) );
+}
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/test/test.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/test/test.js
index 63acb590470d..3fe1814bfbdf 100644
--- a/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/test/test.js
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/test/test.js
@@ -25,6 +25,8 @@ var isSameComplex64 = require( '@stdlib/assert/is-same-complex64' );
var Complex64Array = require( '@stdlib/array/complex64' );
var Complex64 = require( '@stdlib/complex/float32/ctor' );
var ndarray = require( '@stdlib/ndarray/base/ctor' );
+var Float32Array = require( '@stdlib/array/float32' );
+var reinterpret = require( '@stdlib/strided/base/reinterpret-complex64' );
var csumkbn = require( './../lib' );
@@ -197,3 +199,115 @@ tape( 'the function supports one-dimensional ndarrays having non-zero offsets',
t.end();
});
+
+tape( 'the function compensates cancellation independently in real and imaginary components', function test( t ) {
+ var x;
+ var v;
+
+ // Exactly representable float32 powers of two have a mathematical sum of 1+2i:
+ x = new Complex64Array([
+ 16777216.0,
+ 16777216.0,
+ 1.0,
+ 2.0,
+ -16777216.0,
+ -16777216.0
+ ]);
+ v = csumkbn( [ vector( x, 3, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 1.0, 2.0 ) ), true, 'recovers low-order components' );
+ t.strictEqual( v instanceof Complex64, true, 'returns a Complex64 instance' );
+
+ // With 2^100, naive summation loses the middle terms even in double precision:
+ x = new Complex64Array([
+ 1.2676506002282294e30,
+ -1.2676506002282294e30,
+ 1.0,
+ 2.0,
+ -1.2676506002282294e30,
+ 1.2676506002282294e30
+ ]);
+ v = csumkbn( [ vector( x, 3, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 1.0, 2.0 ) ), true, 'compensates large cancellation' );
+ t.end();
+});
+
+tape( 'the function preserves compensated sums for reversed and offset views without mutating their buffers', function test( t ) {
+ var data;
+ var x;
+ var v;
+
+ data = [
+ 91.0,
+ 92.0,
+ 16777216.0,
+ 16777216.0,
+ 93.0,
+ 94.0,
+ 1.0,
+ 2.0,
+ 95.0,
+ 96.0,
+ -16777216.0,
+ -16777216.0,
+ 97.0,
+ 98.0
+ ];
+ x = new Complex64Array( data );
+ v = csumkbn( [ vector( x, 3, 2, 1 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 1.0, 2.0 ) ), true, 'sums the selected positive-stride elements' );
+ v = csumkbn( [ vector( x, 3, -2, 5 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 1.0, 2.0 ) ), true, 'sums the selected negative-stride elements' );
+ t.deepEqual( reinterpret( x, 0 ), new Float32Array( data ), 'preserves input and guard elements' );
+ t.end();
+});
+
+tape( 'the function supports zero strides and zero-length views of populated buffers', function test( t ) {
+ var x;
+ var v;
+
+ x = new Complex64Array( [ 99.0, 99.0, 1.5, -2.0, 99.0, 99.0 ] );
+ v = csumkbn( [ vector( x, 4, 0, 1 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 6.0, -8.0 ) ), true, 'repeats the selected element' );
+ v = csumkbn( [ vector( x, 0, -1, 1 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 0.0, 0.0 ) ), true, 'uses logical length instead of buffer length' );
+ t.end();
+});
+
+tape( 'the function respects the byte offset of the underlying complex array view', function test( t ) {
+ var buffer;
+ var x;
+ var v;
+
+ buffer = new Float32Array([
+ 99.0,
+ 99.0,
+ 1.0,
+ 2.0,
+ 3.0,
+ 4.0,
+ 5.0,
+ 6.0,
+ 99.0,
+ 99.0
+ ]);
+ x = new Complex64Array( buffer.buffer, 8, 3 );
+ v = csumkbn( [ vector( x, 2, -1, 2 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 8.0, 10.0 ) ), true, 'combines data-buffer byte offset with ndarray element offset' );
+ t.end();
+});
+
+tape( 'the function handles non-finite and zero components independently', function test( t ) {
+ var x;
+ var v;
+
+ x = new Complex64Array( [ Infinity, -Infinity ] );
+ v = csumkbn( [ vector( x, 1, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( Infinity, -Infinity ) ), true, 'preserves singleton infinities' );
+ x = new Complex64Array( [ NaN, 1.0, 3.0, 2.0 ] );
+ v = csumkbn( [ vector( x, 2, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( NaN, 3.0 ) ), true, 'a NaN component does not affect the other component' );
+ x = new Complex64Array( [ -0.0, -0.0, -0.0, -0.0 ] );
+ v = csumkbn( [ vector( x, 2, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( -0.0, -0.0 ) ), true, 'preserves negative zero components' );
+ t.end();
+});
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/test/test.main.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/test/test.main.js
new file mode 100644
index 000000000000..9dd29023242e
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/test/test.main.js
@@ -0,0 +1,313 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var tape = require( 'tape' );
+var isSameComplex64 = require( '@stdlib/assert/is-same-complex64' );
+var Complex64Array = require( '@stdlib/array/complex64' );
+var Complex64 = require( '@stdlib/complex/float32/ctor' );
+var ndarray = require( '@stdlib/ndarray/base/ctor' );
+var Float32Array = require( '@stdlib/array/float32' );
+var reinterpret = require( '@stdlib/strided/base/reinterpret-complex64' );
+var csumkbn = require( './../lib/main.js' );
+
+
+// FUNCTIONS //
+
+/**
+* Returns a one-dimensional ndarray.
+*
+* @private
+* @param {Complex64Array} buffer - underlying data buffer
+* @param {NonNegativeInteger} length - number of indexed elements
+* @param {integer} stride - stride length
+* @param {NonNegativeInteger} offset - index offset
+* @returns {ndarray} one-dimensional ndarray
+*/
+function vector( buffer, length, stride, offset ) {
+ return new ndarray( 'complex64', buffer, [ length ], [ stride ], offset, 'row-major' );
+}
+
+
+// TESTS //
+
+tape( 'main export is a function', function test( t ) {
+ t.ok( true, __filename );
+ t.strictEqual( typeof csumkbn, 'function', 'main export is a function' );
+ t.end();
+});
+
+tape( 'the function has an arity of 1', function test( t ) {
+ t.strictEqual( csumkbn.length, 1, 'has expected arity' );
+ t.end();
+});
+
+tape( 'the function computes the sum of all elements in a one-dimensional ndarray using an improved Kahan–Babuška algorithm', function test( t ) {
+ var x;
+ var v;
+
+ x = new Complex64Array( [ 1.0, -2.0, -4.0, 5.0, 0.0, 3.0 ] );
+ v = csumkbn( [ vector( x, 3, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( -3.0, 6.0 ) ), true, 'returns expected value' );
+
+ x = new Complex64Array( [ -4.0, -5.0, -4.0, -5.0 ] );
+ v = csumkbn( [ vector( x, 2, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( -8.0, -10.0 ) ), true, 'returns expected value' );
+
+ x = new Complex64Array( [ -0.0, 0.0, -0.0, -0.0 ] );
+ v = csumkbn( [ vector( x, 2, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( -0.0, 0.0 ) ), true, 'returns expected value' );
+
+ x = new Complex64Array( [ NaN, NaN ] );
+ v = csumkbn( [ vector( x, 1, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( NaN, NaN ) ), true, 'returns expected value' );
+
+ x = new Complex64Array( [ NaN, NaN, NaN, NaN ] );
+ v = csumkbn( [ vector( x, 2, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( NaN, NaN ) ), true, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'if provided an empty ndarray, the function returns `0.0`', function test( t ) {
+ var x;
+ var v;
+
+ x = new Complex64Array( [] );
+
+ v = csumkbn( [ vector( x, 0, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 0.0, 0.0 ) ), true, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'if provided a ndarray containing a single element, the function returns that element', function test( t ) {
+ var x;
+ var v;
+
+ x = new Complex64Array( [ 1.0, 2.0 ] );
+
+ v = csumkbn( [ vector( x, 1, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 1.0, 2.0 ) ), true, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function supports one-dimensional ndarrays having non-unit strides', function test( t ) {
+ var x;
+ var v;
+
+ x = new Complex64Array([
+ 1.0, // 0
+ 1.0, // 0
+ 2.0,
+ 2.0,
+ 2.0, // 1
+ 2.0, // 1
+ -7.0,
+ -7.0,
+ -2.0, // 2
+ -2.0, // 2
+ 3.0,
+ 3.0,
+ 4.0, // 3
+ 4.0, // 3
+ 2.0,
+ 2.0
+ ]);
+
+ v = csumkbn( [ vector( x, 4, 2, 0 ) ] );
+
+ t.strictEqual( isSameComplex64( v, new Complex64( 5.0, 5.0 ) ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function supports one-dimensional ndarrays having negative strides', function test( t ) {
+ var x;
+ var v;
+
+ x = new Complex64Array([
+ 1.0, // 3
+ 1.0, // 3
+ 2.0,
+ 2.0,
+ 2.0, // 2
+ 2.0, // 2
+ -7.0,
+ -7.0,
+ -2.0, // 1
+ -2.0, // 1
+ 3.0,
+ 3.0,
+ 4.0, // 0
+ 4.0, // 0
+ 2.0,
+ 2.0
+ ]);
+
+ v = csumkbn( [ vector( x, 4, -2, 6 ) ] );
+
+ t.strictEqual( isSameComplex64( v, new Complex64( 5.0, 5.0 ) ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function supports one-dimensional ndarrays having non-zero offsets', function test( t ) {
+ var x;
+ var v;
+
+ x = new Complex64Array([
+ -9.0,
+ -9.0,
+ 1.0, // 3
+ 1.0, // 3
+ 2.0,
+ 2.0,
+ 2.0, // 2
+ 2.0, // 2
+ -7.0,
+ -7.0,
+ -2.0, // 1
+ -2.0, // 1
+ 3.0,
+ 3.0,
+ 4.0, // 0
+ 4.0, // 0
+ 2.0,
+ 2.0
+ ]);
+
+ v = csumkbn( [ vector( x, 4, 2, 1 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 5.0, 5.0 ) ), true, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function compensates cancellation independently in real and imaginary components', function test( t ) {
+ var x;
+ var v;
+
+ // Exactly representable float32 powers of two have a mathematical sum of 1+2i:
+ x = new Complex64Array([
+ 16777216.0,
+ 16777216.0,
+ 1.0,
+ 2.0,
+ -16777216.0,
+ -16777216.0
+ ]);
+ v = csumkbn( [ vector( x, 3, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 1.0, 2.0 ) ), true, 'recovers low-order components' );
+ t.strictEqual( v instanceof Complex64, true, 'returns a Complex64 instance' );
+
+ // With 2^100, naive summation loses the middle terms even in double precision:
+ x = new Complex64Array([
+ 1.2676506002282294e30,
+ -1.2676506002282294e30,
+ 1.0,
+ 2.0,
+ -1.2676506002282294e30,
+ 1.2676506002282294e30
+ ]);
+ v = csumkbn( [ vector( x, 3, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 1.0, 2.0 ) ), true, 'compensates large cancellation' );
+ t.end();
+});
+
+tape( 'the function preserves compensated sums for reversed and offset views without mutating their buffers', function test( t ) {
+ var data;
+ var x;
+ var v;
+
+ data = [
+ 91.0,
+ 92.0,
+ 16777216.0,
+ 16777216.0,
+ 93.0,
+ 94.0,
+ 1.0,
+ 2.0,
+ 95.0,
+ 96.0,
+ -16777216.0,
+ -16777216.0,
+ 97.0,
+ 98.0
+ ];
+ x = new Complex64Array( data );
+ v = csumkbn( [ vector( x, 3, 2, 1 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 1.0, 2.0 ) ), true, 'sums the selected positive-stride elements' );
+ v = csumkbn( [ vector( x, 3, -2, 5 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 1.0, 2.0 ) ), true, 'sums the selected negative-stride elements' );
+ t.deepEqual( reinterpret( x, 0 ), new Float32Array( data ), 'preserves input and guard elements' );
+ t.end();
+});
+
+tape( 'the function supports zero strides and zero-length views of populated buffers', function test( t ) {
+ var x;
+ var v;
+
+ x = new Complex64Array( [ 99.0, 99.0, 1.5, -2.0, 99.0, 99.0 ] );
+ v = csumkbn( [ vector( x, 4, 0, 1 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 6.0, -8.0 ) ), true, 'repeats the selected element' );
+ v = csumkbn( [ vector( x, 0, -1, 1 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 0.0, 0.0 ) ), true, 'uses logical length instead of buffer length' );
+ t.end();
+});
+
+tape( 'the function respects the byte offset of the underlying complex array view', function test( t ) {
+ var buffer;
+ var x;
+ var v;
+
+ buffer = new Float32Array([
+ 99.0,
+ 99.0,
+ 1.0,
+ 2.0,
+ 3.0,
+ 4.0,
+ 5.0,
+ 6.0,
+ 99.0,
+ 99.0
+ ]);
+ x = new Complex64Array( buffer.buffer, 8, 3 );
+ v = csumkbn( [ vector( x, 2, -1, 2 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 8.0, 10.0 ) ), true, 'combines data-buffer byte offset with ndarray element offset' );
+ t.end();
+});
+
+tape( 'the function handles non-finite and zero components independently', function test( t ) {
+ var x;
+ var v;
+
+ x = new Complex64Array( [ Infinity, -Infinity ] );
+ v = csumkbn( [ vector( x, 1, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( Infinity, -Infinity ) ), true, 'preserves singleton infinities' );
+ x = new Complex64Array( [ NaN, 1.0, 3.0, 2.0 ] );
+ v = csumkbn( [ vector( x, 2, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( NaN, 3.0 ) ), true, 'a NaN component does not affect the other component' );
+ x = new Complex64Array( [ -0.0, -0.0, -0.0, -0.0 ] );
+ v = csumkbn( [ vector( x, 2, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( -0.0, -0.0 ) ), true, 'preserves negative zero components' );
+ t.end();
+});
diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/test/test.native.js b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/test/test.native.js
new file mode 100644
index 000000000000..3d80807dd604
--- /dev/null
+++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/csumkbn/test/test.native.js
@@ -0,0 +1,322 @@
+/**
+* @license Apache-2.0
+*
+* Copyright (c) 2025 The Stdlib Authors.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+* http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+'use strict';
+
+// MODULES //
+
+var resolve = require( 'path' ).resolve;
+var tape = require( 'tape' );
+var isSameComplex64 = require( '@stdlib/assert/is-same-complex64' );
+var Complex64Array = require( '@stdlib/array/complex64' );
+var Complex64 = require( '@stdlib/complex/float32/ctor' );
+var ndarray = require( '@stdlib/ndarray/base/ctor' );
+var Float32Array = require( '@stdlib/array/float32' );
+var reinterpret = require( '@stdlib/strided/base/reinterpret-complex64' );
+var tryRequire = require( '@stdlib/utils/try-require' );
+
+
+// VARIABLES //
+
+var csumkbn = tryRequire( resolve( __dirname, './../lib/native.js' ) );
+var opts = {
+ 'skip': ( csumkbn instanceof Error )
+};
+
+
+// FUNCTIONS //
+
+/**
+* Returns a one-dimensional ndarray.
+*
+* @private
+* @param {Complex64Array} buffer - underlying data buffer
+* @param {NonNegativeInteger} length - number of indexed elements
+* @param {integer} stride - stride length
+* @param {NonNegativeInteger} offset - index offset
+* @returns {ndarray} one-dimensional ndarray
+*/
+function vector( buffer, length, stride, offset ) {
+ return new ndarray( 'complex64', buffer, [ length ], [ stride ], offset, 'row-major' );
+}
+
+
+// TESTS //
+
+tape( 'main export is a function', opts, function test( t ) {
+ t.ok( true, __filename );
+ t.strictEqual( typeof csumkbn, 'function', 'main export is a function' );
+ t.end();
+});
+
+tape( 'the function has an arity of 1', opts, function test( t ) {
+ t.strictEqual( csumkbn.length, 1, 'has expected arity' );
+ t.end();
+});
+
+tape( 'the function computes the sum of all elements in a one-dimensional ndarray using an improved Kahan–Babuška algorithm', opts, function test( t ) {
+ var x;
+ var v;
+
+ x = new Complex64Array( [ 1.0, -2.0, -4.0, 5.0, 0.0, 3.0 ] );
+ v = csumkbn( [ vector( x, 3, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( -3.0, 6.0 ) ), true, 'returns expected value' );
+
+ x = new Complex64Array( [ -4.0, -5.0, -4.0, -5.0 ] );
+ v = csumkbn( [ vector( x, 2, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( -8.0, -10.0 ) ), true, 'returns expected value' );
+
+ x = new Complex64Array( [ -0.0, 0.0, -0.0, -0.0 ] );
+ v = csumkbn( [ vector( x, 2, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( -0.0, 0.0 ) ), true, 'returns expected value' );
+
+ x = new Complex64Array( [ NaN, NaN ] );
+ v = csumkbn( [ vector( x, 1, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( NaN, NaN ) ), true, 'returns expected value' );
+
+ x = new Complex64Array( [ NaN, NaN, NaN, NaN ] );
+ v = csumkbn( [ vector( x, 2, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( NaN, NaN ) ), true, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'if provided an empty ndarray, the function returns `0.0`', opts, function test( t ) {
+ var x;
+ var v;
+
+ x = new Complex64Array( [] );
+
+ v = csumkbn( [ vector( x, 0, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 0.0, 0.0 ) ), true, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'if provided a ndarray containing a single element, the function returns that element', opts, function test( t ) {
+ var x;
+ var v;
+
+ x = new Complex64Array( [ 1.0, 2.0 ] );
+
+ v = csumkbn( [ vector( x, 1, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 1.0, 2.0 ) ), true, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function supports one-dimensional ndarrays having non-unit strides', opts, function test( t ) {
+ var x;
+ var v;
+
+ x = new Complex64Array([
+ 1.0, // 0
+ 1.0, // 0
+ 2.0,
+ 2.0,
+ 2.0, // 1
+ 2.0, // 1
+ -7.0,
+ -7.0,
+ -2.0, // 2
+ -2.0, // 2
+ 3.0,
+ 3.0,
+ 4.0, // 3
+ 4.0, // 3
+ 2.0,
+ 2.0
+ ]);
+
+ v = csumkbn( [ vector( x, 4, 2, 0 ) ] );
+
+ t.strictEqual( isSameComplex64( v, new Complex64( 5.0, 5.0 ) ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function supports one-dimensional ndarrays having negative strides', opts, function test( t ) {
+ var x;
+ var v;
+
+ x = new Complex64Array([
+ 1.0, // 3
+ 1.0, // 3
+ 2.0,
+ 2.0,
+ 2.0, // 2
+ 2.0, // 2
+ -7.0,
+ -7.0,
+ -2.0, // 1
+ -2.0, // 1
+ 3.0,
+ 3.0,
+ 4.0, // 0
+ 4.0, // 0
+ 2.0,
+ 2.0
+ ]);
+
+ v = csumkbn( [ vector( x, 4, -2, 6 ) ] );
+
+ t.strictEqual( isSameComplex64( v, new Complex64( 5.0, 5.0 ) ), true, 'returns expected value' );
+ t.end();
+});
+
+tape( 'the function supports one-dimensional ndarrays having non-zero offsets', opts, function test( t ) {
+ var x;
+ var v;
+
+ x = new Complex64Array([
+ -9.0,
+ -9.0,
+ 1.0, // 3
+ 1.0, // 3
+ 2.0,
+ 2.0,
+ 2.0, // 2
+ 2.0, // 2
+ -7.0,
+ -7.0,
+ -2.0, // 1
+ -2.0, // 1
+ 3.0,
+ 3.0,
+ 4.0, // 0
+ 4.0, // 0
+ 2.0,
+ 2.0
+ ]);
+
+ v = csumkbn( [ vector( x, 4, 2, 1 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 5.0, 5.0 ) ), true, 'returns expected value' );
+
+ t.end();
+});
+
+tape( 'the function compensates cancellation independently in real and imaginary components', opts, function test( t ) {
+ var x;
+ var v;
+
+ // Exactly representable float32 powers of two have a mathematical sum of 1+2i:
+ x = new Complex64Array([
+ 16777216.0,
+ 16777216.0,
+ 1.0,
+ 2.0,
+ -16777216.0,
+ -16777216.0
+ ]);
+ v = csumkbn( [ vector( x, 3, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 1.0, 2.0 ) ), true, 'recovers low-order components' );
+ t.strictEqual( v instanceof Complex64, true, 'returns a Complex64 instance' );
+
+ // With 2^100, naive summation loses the middle terms even in double precision:
+ x = new Complex64Array([
+ 1.2676506002282294e30,
+ -1.2676506002282294e30,
+ 1.0,
+ 2.0,
+ -1.2676506002282294e30,
+ 1.2676506002282294e30
+ ]);
+ v = csumkbn( [ vector( x, 3, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 1.0, 2.0 ) ), true, 'compensates large cancellation' );
+ t.end();
+});
+
+tape( 'the function preserves compensated sums for reversed and offset views without mutating their buffers', opts, function test( t ) {
+ var data;
+ var x;
+ var v;
+
+ data = [
+ 91.0,
+ 92.0,
+ 16777216.0,
+ 16777216.0,
+ 93.0,
+ 94.0,
+ 1.0,
+ 2.0,
+ 95.0,
+ 96.0,
+ -16777216.0,
+ -16777216.0,
+ 97.0,
+ 98.0
+ ];
+ x = new Complex64Array( data );
+ v = csumkbn( [ vector( x, 3, 2, 1 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 1.0, 2.0 ) ), true, 'sums the selected positive-stride elements' );
+ v = csumkbn( [ vector( x, 3, -2, 5 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 1.0, 2.0 ) ), true, 'sums the selected negative-stride elements' );
+ t.deepEqual( reinterpret( x, 0 ), new Float32Array( data ), 'preserves input and guard elements' );
+ t.end();
+});
+
+tape( 'the function supports zero strides and zero-length views of populated buffers', opts, function test( t ) {
+ var x;
+ var v;
+
+ x = new Complex64Array( [ 99.0, 99.0, 1.5, -2.0, 99.0, 99.0 ] );
+ v = csumkbn( [ vector( x, 4, 0, 1 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 6.0, -8.0 ) ), true, 'repeats the selected element' );
+ v = csumkbn( [ vector( x, 0, -1, 1 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 0.0, 0.0 ) ), true, 'uses logical length instead of buffer length' );
+ t.end();
+});
+
+tape( 'the function respects the byte offset of the underlying complex array view', opts, function test( t ) {
+ var buffer;
+ var x;
+ var v;
+
+ buffer = new Float32Array([
+ 99.0,
+ 99.0,
+ 1.0,
+ 2.0,
+ 3.0,
+ 4.0,
+ 5.0,
+ 6.0,
+ 99.0,
+ 99.0
+ ]);
+ x = new Complex64Array( buffer.buffer, 8, 3 );
+ v = csumkbn( [ vector( x, 2, -1, 2 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( 8.0, 10.0 ) ), true, 'combines data-buffer byte offset with ndarray element offset' );
+ t.end();
+});
+
+tape( 'the function handles non-finite and zero components independently', opts, function test( t ) {
+ var x;
+ var v;
+
+ x = new Complex64Array( [ Infinity, -Infinity ] );
+ v = csumkbn( [ vector( x, 1, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( Infinity, -Infinity ) ), true, 'preserves singleton infinities' );
+ x = new Complex64Array( [ NaN, 1.0, 3.0, 2.0 ] );
+ v = csumkbn( [ vector( x, 2, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( NaN, 3.0 ) ), true, 'a NaN component does not affect the other component' );
+ x = new Complex64Array( [ -0.0, -0.0, -0.0, -0.0 ] );
+ v = csumkbn( [ vector( x, 2, 1, 0 ) ] );
+ t.strictEqual( isSameComplex64( v, new Complex64( -0.0, -0.0 ) ), true, 'preserves negative zero components' );
+ t.end();
+});