diff options
Diffstat (limited to 'lib/libc/mips/gen/flt_rounds.c')
-rw-r--r-- | lib/libc/mips/gen/flt_rounds.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/lib/libc/mips/gen/flt_rounds.c b/lib/libc/mips/gen/flt_rounds.c new file mode 100644 index 0000000..9fc64a5 --- /dev/null +++ b/lib/libc/mips/gen/flt_rounds.c @@ -0,0 +1,30 @@ +/* $NetBSD: flt_rounds.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: flt_rounds.c,v 1.5 2005/12/24 23:10:08 perry Exp $"); +#endif /* LIBC_SCCS and not lint */ + +#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("cfc1 %0,$31" : "=r" (x)); + return map[x & 0x03]; +} |