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flt_rounds.c revision 1.2 
      1 /*	$NetBSD: flt_rounds.c,v 1.2 1998/02/03 01:30:43 mycroft Exp $	*/
      2 
      3 #include <float.h>
      4 
      5 static const int map[] = {
      6 	1,	/* round to nearest */
      7 	0,	/* round to zero */
      8 	2,	/* round to positive infinity */
      9 	3	/* round to negative infinity */
     10 };
     11 
     12 int
     13 __flt_rounds()
     14 {
     15 	double tmp;
     16 	int x;
     17 
     18 	asm("mffs %0; stfiwx %0,0,%1" : "=f"(tmp): "b"(&x));
     19 	return map[x & 0x03];
     20 }
     21