flt_rounds.c revision 178580
1/* $NetBSD: flt_rounds.c,v 1.5 2005/12/24 23:10:08 perry Exp $ */ 2 3/* 4 * Written by J.T. Conklin, Apr 11, 1995 5 * Public domain. 6 */ 7 8#include <sys/cdefs.h> 9__FBSDID("$FreeBSD: head/lib/libc/mips/gen/flt_rounds.c 178580 2008-04-26 12:08:02Z imp $"); 10#if defined(LIBC_SCCS) && !defined(lint) 11__RCSID("$NetBSD: flt_rounds.c,v 1.5 2005/12/24 23:10:08 perry Exp $"); 12#endif /* LIBC_SCCS and not lint */ 13 14#include <machine/float.h> 15 16static const int map[] = { 17 1, /* round to nearest */ 18 0, /* round to zero */ 19 2, /* round to positive infinity */ 20 3 /* round to negative infinity */ 21}; 22 23int 24__flt_rounds() 25{ 26 int x; 27 28 __asm("cfc1 %0,$31" : "=r" (x)); 29 return map[x & 0x03]; 30} 31