mono/utils/mono-math.c

   1
   2 #include "mono-math.h"
   3
   4 #ifndef HAVE_SIGNBIT
   5
   6 int
   7 mono_signbit_float (float x)
   8 {
   9         union { float f; int i; } u;
  10
  11         u.f = x;
  12
  13         return u.i < 0;
  14 }
  15
  16 int
  17 mono_signbit_double (double x)
  18 {
  19         union { double d; int i[2]; } u;
  20
  21         u.d = x;
  22
  23 #if G_BYTE_ORDER == G_LITTLE_ENDIAN
  24         return u.i [1] < 0;
  25 #else
  26         return u.i [0] < 0;
  27 #endif
  28 }
  29
  30 #endif