vx32

Local 9vx git repository for patches.
git clone git://r-36.net/vx32
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flt_rounds.c (350B)

      1 /*
      2  * Written by J.T. Conklin, Apr 10, 1995
      3  * Public domain.
      4  */
      5 
      6 #include <float.h>
      7 
      8 static const int map[] = {
      9 	1,	/* round to nearest */
     10 	3,	/* round to zero */
     11 	2,	/* round to negative infinity */
     12 	0	/* round to positive infinity */
     13 };
     14 
     15 int
     16 __flt_rounds(void)
     17 {
     18 	int x;
     19 
     20 	__asm("fnstcw %0" : "=m" (x));
     21         return (map[(x >> 10) & 0x03]);
     22 }