reactos/lib/msvcrt/math/ceil.c

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