diff --git a/lib/node_modules/@stdlib/blas/ext/base/ndarray/ctril/README.md b/lib/node_modules/@stdlib/blas/ext/base/ndarray/ctril/README.md index e4c7c965bb03..2e66eaf246ab 100644 --- a/lib/node_modules/@stdlib/blas/ext/base/ndarray/ctril/README.md +++ b/lib/node_modules/@stdlib/blas/ext/base/ndarray/ctril/README.md @@ -50,7 +50,7 @@ var A = new Complex64Matrix( [ [ 1.0, 2.0, 3.0, 4.0 ], [ 5.0, 6.0, 7.0, 8.0 ] ] var B = new Complex64Matrix( [ [ 0.0, 0.0, 0.0, 0.0 ], [ 0.0, 0.0, 0.0, 0.0 ] ] ); var k = scalar2ndarray( 0, { - 'dtype': 'generic' + 'dtype': 'int32' }); var out = ctril( [ A, B, k ] ); @@ -108,7 +108,7 @@ var B = new Complex64Matrix( discreteUniform( 5*5*2, -50, 50, opts ).buffer, 0, console.log( ndarray2array( B ) ); var k = scalar2ndarray( 0, { - 'dtype': 'generic' + 'dtype': 'int32' }); var out = ctril( [ A, B, k ] ); @@ -119,6 +119,238 @@ console.log( ndarray2array( out ) ); + + +* * * + +
+ +## C APIs + + + +
+ +
+ + + + + +
+ +### Usage + +```c +#include "stdlib/blas/ext/base/ndarray/ctril.h" +``` + +#### stdlib_blas_ext_ctril( arrays ) + +Copies the lower triangular part of a single-precision complex floating-point matrix `A` to another matrix `B`. + +```c +#include "stdlib/blas/ext/base/ndarray/ctril.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/ctor.h" +#include "stdlib/complex/float32/real.h" +#include "stdlib/complex/float32/imag.h" +#include +#include +#include + +// Create data buffers: +const stdlib_complex64_t dataA[] = { + stdlib_complex64( 1.0f, 1.0f ), stdlib_complex64( 2.0f, 2.0f ), + stdlib_complex64( 3.0f, 3.0f ), stdlib_complex64( 4.0f, 4.0f ) +}; +stdlib_complex64_t dataB[] = { + stdlib_complex64( 0.0f, 0.0f ), stdlib_complex64( 0.0f, 0.0f ), + stdlib_complex64( 0.0f, 0.0f ), stdlib_complex64( 0.0f, 0.0f ) +}; +int32_t dataK[] = { 0 }; + +// Specify the number of matrix dimensions: +const int64_t ndims = 2; + +// Specify the matrix shape: +int64_t shape[] = { 2, 2 }; + +// Specify the array strides (in bytes): +int64_t strides[] = { + 2 * STDLIB_NDARRAY_COMPLEX64_BYTES_PER_ELEMENT, + STDLIB_NDARRAY_COMPLEX64_BYTES_PER_ELEMENT +}; +int64_t kstrides[] = { 0 }; + +// 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 ndarrays: +struct ndarray *A = stdlib_ndarray_allocate( STDLIB_NDARRAY_COMPLEX64, (uint8_t *)dataA, ndims, shape, strides, offset, order, imode, nsubmodes, submodes ); + +struct ndarray *B = stdlib_ndarray_allocate( STDLIB_NDARRAY_COMPLEX64, (uint8_t *)dataB, ndims, shape, strides, offset, order, imode, nsubmodes, submodes ); + +struct ndarray *k = stdlib_ndarray_allocate( STDLIB_NDARRAY_INT32, (uint8_t *)dataK, 0, NULL, kstrides, offset, order, imode, nsubmodes, submodes ); +if ( A == NULL || B == NULL || k == NULL ) { + fprintf( stderr, "Error allocating memory. +" ); + exit( 1 ); +} + +// Define a list of ndarrays: +const struct ndarray *arrays[] = { A, B, k }; + +// Perform computation: +stdlib_blas_ext_ctril( arrays ); + +// Print the result: +for ( int i = 0; i < 4; i++ ) { + printf( "dataB[ %i ] = (%f, %f) +", i, stdlib_complex64_real( dataB[ i ] ), stdlib_complex64_imag( dataB[ i ] ) ); +} + +// Free allocated memory: +stdlib_ndarray_free( A ); +stdlib_ndarray_free( B ); +stdlib_ndarray_free( k ); +``` + +The function accepts the following arguments: + +- **arrays**: `[in] struct ndarray**` list containing the following ndarrays: + + - `[in] struct ndarray*` a two-dimensional input ndarray. + - `[inout] struct ndarray*` a two-dimensional output ndarray. + - `[in] struct ndarray*` a zero-dimensional ndarray specifying the diagonal above which to ignore. A value equal to zero refers to the main diagonal, greater than zero refers to a diagonal above the main diagonal, and less than zero refers to a diagonal below the main diagonal. + +```c +void stdlib_blas_ext_ctril( const struct ndarray *arrays[] ); +``` + +
+ + + + + +
+ +### Notes + +- Elements outside of the copied region are left unchanged. + +
+ + + + + +
+ +### Examples + +```c +#include "stdlib/blas/ext/base/ndarray/ctril.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/ctor.h" +#include "stdlib/complex/float32/real.h" +#include "stdlib/complex/float32/imag.h" +#include +#include +#include + +int main( void ) { + // Create data buffers: + const stdlib_complex64_t dataA[] = { + stdlib_complex64( 1.0f, 1.0f ), stdlib_complex64( 2.0f, 2.0f ), + stdlib_complex64( 3.0f, 3.0f ), stdlib_complex64( 4.0f, 4.0f ) + }; + stdlib_complex64_t dataB[] = { + stdlib_complex64( 0.0f, 0.0f ), stdlib_complex64( 0.0f, 0.0f ), + stdlib_complex64( 0.0f, 0.0f ), stdlib_complex64( 0.0f, 0.0f ) + }; + int32_t dataK[] = { 0 }; + + // Specify the number of matrix dimensions: + const int64_t ndims = 2; + + // Specify the matrix shape: + int64_t shape[] = { 2, 2 }; + + // Specify the array strides (in bytes): + int64_t strides[] = { + 2 * STDLIB_NDARRAY_COMPLEX64_BYTES_PER_ELEMENT, + STDLIB_NDARRAY_COMPLEX64_BYTES_PER_ELEMENT + }; + int64_t kstrides[] = { 0 }; + + // 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 ndarrays: + struct ndarray *A = stdlib_ndarray_allocate( STDLIB_NDARRAY_COMPLEX64, (uint8_t *)dataA, ndims, shape, strides, offset, order, imode, nsubmodes, submodes ); + struct ndarray *B = stdlib_ndarray_allocate( STDLIB_NDARRAY_COMPLEX64, (uint8_t *)dataB, ndims, shape, strides, offset, order, imode, nsubmodes, submodes ); + struct ndarray *k = stdlib_ndarray_allocate( STDLIB_NDARRAY_INT32, (uint8_t *)dataK, 0, NULL, kstrides, offset, order, imode, nsubmodes, submodes ); + if ( A == NULL || B == NULL || k == NULL ) { + fprintf( stderr, "Error allocating memory.\n" ); + exit( 1 ); + } + + // Define a list of ndarrays: + const struct ndarray *arrays[] = { A, B, k }; + + // Perform computation: + stdlib_blas_ext_ctril( arrays ); + + // Print the result: + for ( int i = 0; i < 4; i++ ) { + printf( "dataB[ %i ] = (%f, %f)\n", i, stdlib_complex64_real( dataB[ i ] ), stdlib_complex64_imag( dataB[ i ] ) ); + } + + // Free allocated memory: + stdlib_ndarray_free( A ); + stdlib_ndarray_free( B ); + stdlib_ndarray_free( k ); +} +``` + +
+ + + +
+ + +