use cmath.fabs

Author: NoureldinYosri

.github/workflows/ci.yml

@@ -67,7 +67,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: ["ubuntu-24.04", "ubuntu-24.04-arm", "windows-2022" , "macos-13", "macos-14"]
+        os: ["ubuntu-24.04-arm"] #["ubuntu-24.04", "ubuntu-24.04-arm", "windows-2022" , "macos-13", "macos-14"]
 
     runs-on: ${{ matrix.os }}
 

tunits/core/cython/frac.pyx

@@ -13,8 +13,7 @@
 # limitations under the License.
 
 cimport cython
-from libc.math cimport floor as c_floor, pow as c_pow
-
+from libc.math cimport floor as c_floor, pow as c_pow, fabs as c_fabs
 
 # A ratio that should always be canonicalized into least terms with the sign
 # on the numerator.
@@ -86,7 +85,7 @@ cpdef frac float_to_twelths_frac(a) except *:
 
     cdef double d = float(a)
     cdef long long x = <long long>c_floor(12*d + 0.5)
-    if abs(12*d - x) > 1e-5:
+    if fabs(12*d - x) > 1e-5:
         print('spit', d, x, 12*d - x, a, '%.20f'%d, '%.20f'%a, '%.20f'%(12*d))
         raise ValueError("Not a twelfth.")