minix/lib/nbsd_libc/arch/sparc/gen/flt_rounds.c
Gianluca Guida b6cbf7203b Import unmodified NetBSD libc in trunk
This patch imports the unmodified current version of NetBSD libc.
The NetBSD includes are in /nbsd_include, while the libc code itself is 
split between lib/nbsd_libc and common/lib/libc.
2011-02-14 19:36:03 +00:00

30 lines
612 B
C

/* $NetBSD: flt_rounds.c,v 1.6 2005/12/24 23:10:08 perry Exp $ */
/*
* Written by J.T. Conklin, Apr 10, 1995
* Public domain.
*/
#include <sys/cdefs.h>
#if defined(LIBC_SCCS) && !defined(lint)
__RCSID("$NetBSD: flt_rounds.c,v 1.6 2005/12/24 23:10:08 perry Exp $");
#endif /* LIBC_SCCS and not lint */
#include <sys/types.h>
#include <machine/float.h>
static const int map[] = {
1, /* round to nearest */
0, /* round to zero */
2, /* round to positive infinity */
3 /* round to negative infinity */
};
int
__flt_rounds()
{
int x;
__asm("st %%fsr,%0" : "=m" (*&x));
return map[(x >> 30) & 0x03];
}