diff options
Diffstat (limited to 'lib/libc/arch/arm32/gen/fpgetround.c')
-rw-r--r-- | lib/libc/arch/arm32/gen/fpgetround.c | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/lib/libc/arch/arm32/gen/fpgetround.c b/lib/libc/arch/arm32/gen/fpgetround.c new file mode 100644 index 00000000000..93d080b72e1 --- /dev/null +++ b/lib/libc/arch/arm32/gen/fpgetround.c @@ -0,0 +1,60 @@ +/* $NetBSD: fpgetround.c,v 1.1 1996/05/12 20:29:21 mark Exp $ */ + +/* + * Copyright (c) 1996 Mark Brinicombe + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Mark Brinicombe + * for the NetBSD Project. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include <sys/types.h> +#include <ieeefp.h> + +/* + * Return the current FP rounding mode + * + * ok all we need to do is return the current FP rounding mode + * + * HOWEVER: + * The ARM FPA codes the rounding mode into the actual FP instructions + * so there is no such thing as a global rounding mode. + * The default is round to nearest if rounding is not explictly specified. + * FP instructions generated by GCC will not explicitly specify a rounding + * mode. + * + * So the best we can do it to return the rounding mode FP instructions + * use if rounding is not specified which is round to nearest. + * + * This could change in the future with new floating point emulators or + * soft float FP libraries. + */ + +fp_rnd +fpgetround() +{ + return(FP_RN); +} |