1 /* $NetBSD: flt_rounds.c,v 1.4 2003/11/01 14:26:29 nakayama Exp $ */ 2 3 /* 4 * Written by J.T. Conklin, Apr 10, 1995 5 * Public domain. 6 */ 7 8 #include <sys/types.h> 9 #include <machine/float.h> 10 11 static const int map[] = { 12 1, /* round to nearest */ 13 0, /* round to zero */ 14 2, /* round to positive infinity */ 15 3 /* round to negative infinity */ 16 }; 17 18 int 19 __flt_rounds() 20 { 21 int x; 22 23 __asm__("st %%fsr,%0" : "=m" (*&x)); 24 return map[(x >> 30) & 0x03]; 25 } 26