diff options
Diffstat (limited to 'lib/libc/mips/gen/hardfloat/fpsetround.c')
-rw-r--r-- | lib/libc/mips/gen/hardfloat/fpsetround.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/lib/libc/mips/gen/hardfloat/fpsetround.c b/lib/libc/mips/gen/hardfloat/fpsetround.c new file mode 100644 index 0000000..0205161 --- /dev/null +++ b/lib/libc/mips/gen/hardfloat/fpsetround.c @@ -0,0 +1,37 @@ +/* $NetBSD: fpsetround.c,v 1.5 2005/12/24 23:10:08 perry Exp $ */ + +/* + * Written by J.T. Conklin, Apr 11, 1995 + * Public domain. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); +#if defined(LIBC_SCCS) && !defined(lint) +__RCSID("$NetBSD: fpsetround.c,v 1.5 2005/12/24 23:10:08 perry Exp $"); +#endif /* LIBC_SCCS and not lint */ + +#include "namespace.h" + +#include <ieeefp.h> + +#ifdef __weak_alias +__weak_alias(fpsetround,_fpsetround) +#endif + +fp_rnd_t +fpsetround(fp_rnd_t rnd_dir) +{ + fp_rnd_t old; + fp_rnd_t new; + + __asm("cfc1 %0,$31" : "=r" (old)); + + new = old; + new &= ~0x03; + new |= (rnd_dir & 0x03); + + __asm("ctc1 %0,$31" : : "r" (new)); + + return old & 0x03; +} |