add debug

Author: NoureldinYosri

tunits/core/cython/frac.pyx

@@ -85,7 +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 12*d - x > 1e-5:
+    if not (-1e-5 < 12*d - x < 1e-5):
         print(12*d - x)
         print(12*d - <long long>(12*d))
         print(<long long>(12*d), x)