sysdeps/ieee754/flt-32/s_isinf_nsf.c

   1 /*
   2  * Written by Ulrich Drepper <drepper@gmail.com>.
   3  */
   4
   5 /*
   6  * __isinf_nsf(x) returns != 0 if x is ±inf, else 0;
   7  * no branching!
   8  */
   9
  10 #include <math.h>
  11 #include <math_private.h>
  12
  13 #undef __isinf_nsf
  14 int
  15 __isinf_nsf (float x)
  16 {
  17         int32_t ix;
  18         GET_FLOAT_WORD(ix,x);
  19         return (ix & 0x7fffffff) == 0x7f800000;
  20 }