/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2011 Nexenta Systems, Inc. All rights reserved.
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include "libm.h"
.data
.align 16
fld1 / 1, x
jmp 1f
frndint / [z], x
PIC_SETUP(1)
1:
fscale / 10^x, [z]
.shortcut:
fldt 8(%rsp) / x
fldl2t / log2(10), x
fmulp / z := x*log2(10)
f2xm1 / 2^z-1
fld1 / 1, 2^z-1
faddp %st,%st(1) / 10^x
ret
.not_finite:
movl 12(%rsp),%ecx / ecx <-- hi_32(sgnfcnd(x))
cmpl $0x80000000,%ecx / hi_32(sgnfcnd(x)) = hi_32(sgnfcnd(INF))?
jne .NaN_or_pinf / if not, x is NaN or unsupp.
movl 8(%rsp),%edx / edx <-- lo_32(sgnfcnd(x))
cmpl $0,%edx / lo_32(sgnfcnd(x)) = 0?
jne .NaN_or_pinf / if not, x is NaN
movl 16(%rsp),%eax / ax <-- sign&bexp((x))
andl $0x8000,%eax / here, x is infinite, but +/-?
jz .NaN_or_pinf / branch if x = +INF
fldz / Here, x = -inf, so return 0
ret
.NaN_or_pinf:
/ Here, x = NaN or +inf, so load x and return immediately.
fldt 8(%rsp)
ret
.align 16
SET_SIZE(exp10l)