diff options
Diffstat (limited to 'lib/libm/arch/mc68881/s_floor.S')
| -rw-r--r-- | lib/libm/arch/mc68881/s_floor.S | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/lib/libm/arch/mc68881/s_floor.S b/lib/libm/arch/mc68881/s_floor.S new file mode 100644 index 00000000000..09691b252a8 --- /dev/null +++ b/lib/libm/arch/mc68881/s_floor.S @@ -0,0 +1,63 @@ +/*- + * Copyright (c) 1990 The Regents of the University of California. + * All rights reserved. + * + * This code is derived from software contributed to Berkeley by + * the Systems Programming Group of the University of Utah Computer + * Science Department. + * + * 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 the University of + * California, Berkeley and its contributors. + * 4. Neither the name of the University nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 REGENTS OR CONTRIBUTORS 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 <machine/asm.h> + +;_sccsid: +;.asciz "from: @(#)floor.s 5.1 (Berkeley) 5/17/90" + +RCSID("$NetBSD: s_floor.S,v 1.3 1995/05/09 02:11:19 jtc Exp $") + +| floor(x) +| the largest integer no larger than x +ENTRY(floor) + fmovel fpcr,d0 | save old FPCR + fmoved sp@(4),fp0 | get argument + fbun Lret | if NaN, return NaN + fboge Lrtz | >=0, round to zero + fmovel #0x20,fpcr | <0, round to -inf + jra Ldoit +Lrtz: + fmovel #0x10,fpcr +Ldoit: + fintd sp@(4),fp0 | truncate + fmovel d0,fpcr | restore old FPCR +Lret: + fmoved fp0,sp@- + movel sp@+,d0 + movel sp@+,d1 + rts |