add debug statement

Author: NoureldinYosri

tunits/core/cython/frac.pyx

@@ -85,15 +85,8 @@ 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)
-    cdef double diff = x
-    diff -= 12*d
-    if max(diff, -diff) > 1e-5:
-        print('spit')
-        print('%.20f'%a)
-        print('%.20f'%d)
-        print('%.20f'%(12*d))
-        print(x)
-        print('%.20f'%diff)
+    cdef double y = 12*d
+    if y - <long long>c_floor(y) > 1e-5:
         raise ValueError("Not a twelfth.")
 
     return frac_least_terms(x, 12)