e415d48872
Bumping libc files for unsupported architectures, to simplify merging. A bunch of small fixes: * in libutil update * the macro in endian.h * some undefined types due to clear separation from host. * Fix a warning for cdbr.c Some modification which were required for the new build system: * inclusion path for const.h in sconst, still hacky * Removed default malloc.c which conflicts on some occasions.
29 lines
746 B
C
29 lines
746 B
C
/* $NetBSD: fpsetround.c,v 1.6 2012/03/23 09:34:09 skrll Exp $ */
|
|
|
|
/* $OpenBSD: fpsetround.c,v 1.3 2002/10/21 18:41:05 mickey Exp $ */
|
|
|
|
/*
|
|
* Written by Miodrag Vallat. Public domain
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#if defined(LIBC_SCCS) && !defined(lint)
|
|
__RCSID("$NetBSD: fpsetround.c,v 1.6 2012/03/23 09:34:09 skrll Exp $");
|
|
#endif /* LIBC_SCCS and not lint */
|
|
|
|
#include <sys/types.h>
|
|
#include <ieeefp.h>
|
|
|
|
fp_rnd
|
|
fpsetround(fp_rnd rnd_dir)
|
|
{
|
|
uint64_t fpsr;
|
|
fp_rnd old;
|
|
|
|
__asm volatile("fstd %%fr0,0(%1)" : "=m" (fpsr) : "r" (&fpsr) : "memory");
|
|
old = (fp_rnd)(fpsr >> 41) & 0x03;
|
|
fpsr = (fpsr & 0xfffff9ff00000000LL) |
|
|
((uint64_t)(rnd_dir & 0x03) << 41);
|
|
__asm volatile("fldd 0(%0),%%fr0" : : "r" (&fpsr) : "memory");
|
|
return (old);
|
|
}
|