1 /* $NetBSD: flt_rounds.c,v 1.3 1997/10/18 02:43:06 jonathan Exp $ */ 2 3 /* 4 * Written by J.T. Conklin, Apr 11, 1995 5 * Public domain. 6 */ 7 8 #include <machine/float.h> 9 10 static const int map[] = { 11 1, /* round to nearest */ 12 0, /* round to zero */ 13 2, /* round to positive infinity */ 14 3 /* round to negative infinity */ 15 }; 16 17 int 18 __flt_rounds() 19 { 20 int x; 21 22 __asm__("cfc1 %0,$31" : "=r" (x)); 23 return map[x & 0x03]; 24 } 25