reactos/lib/crt/math/ceil.c

   1 #include <math.h>
   2
   3 /*
   4  * @implemented
   5  */
   6 double ceil (double __x)
   7 {
   8   register double __value;
   9 #ifdef __GNUC__
  10   __volatile unsigned short int __cw, __cwtmp;
  11
  12   __asm __volatile ("fnstcw %0" : "=m" (__cw));
  13   __cwtmp = (__cw & 0xf3ff) | 0x0800; /* rounding up */
  14   __asm __volatile ("fldcw %0" : : "m" (__cwtmp));
  15   __asm __volatile ("frndint" : "=t" (__value) : "0" (__x));
  16   __asm __volatile ("fldcw %0" : : "m" (__cw));
  17 #else
  18   __value = linkme_ceil(__x);
  19 #endif /*__GNUC__*/
  20   return __value;
  21 }