glibc/sysdeps/i386/fpu/s_expm1f.S
Ulrich Drepper fee732e531 * intl/Makefile (tst-gettext[45].out): Pass also $(run-program-prefix)
as argument to the scripts.
	* intl/tst-gettext2.sh: Use mkdir -p instead of test -d + mkdir.
	* intl/tst-gettext4.sh: Likewise.  Use run_program_prefix argument.
	* intl/tst-gettext5.sh: Likewise.

	* intl/tst-translit.sh: Add mkdir -p.

	* sysdeps/unix/sysv/linux/i386/sysdep.h (SETUP_PIC_REG): Use
	.ifndef/.endif to allow use of this macro more than once per .S
	file.
	(LOAD_PIC_REG): New macro.
	* sysdeps/unix/sysv/linux/i386/makecontext.S: Add call frame
	information.
	* sysdeps/unix/sysv/linux/i386/getcontext.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/vfork.S: Likewise.
	* sysdeps/i386/fpu/s_asinh.S: Use LOAD_PIC_REG macro.  Add call frame
	information.
	* sysdeps/i386/fpu/e_log10f.S: Likewise.
	* sysdeps/i386/fpu/s_expm1.S: Likewise.
	* sysdeps/i386/fpu/e_acoshf.S: Likewise.
	* sysdeps/i386/fpu/e_log2l.S: Likewise.
	* sysdeps/i386/fpu/s_log1pf.S: Likewise.
	* sysdeps/i386/fpu/s_lrint.S: Likewise.
	* sysdeps/i386/fpu/s_llrint.S: Likewise.
	* sysdeps/i386/fpu/s_ilogbf.S: Likewise.
	* sysdeps/i386/fpu/s_cbrtl.S: Likewise.
	* sysdeps/i386/fpu/s_asinhf.S: Likewise.
	* sysdeps/i386/fpu/e_log.S: Likewise.
	* sysdeps/i386/fpu/e_atanhf.S: Likewise.
	* sysdeps/i386/fpu/s_lrintl.S: Likewise.
	* sysdeps/i386/fpu/e_atanhl.S: Likewise.
	* sysdeps/i386/fpu/e_scalb.S: Likewise.
	* sysdeps/i386/fpu/s_log1p.S: Likewise.
	* sysdeps/i386/fpu/s_nearbyintl.S: Likewise.
	* sysdeps/i386/fpu/s_frexpl.S: Likewise.
	* sysdeps/i386/fpu/s_log1pl.S: Likewise.
	* sysdeps/i386/fpu/s_nearbyintf.S: Likewise.
	* sysdeps/i386/fpu/s_cbrt.S: Likewise.
	* sysdeps/i386/fpu/s_expm1l.S: Likewise.
	* sysdeps/i386/fpu/s_lrintf.S: Likewise.
	* sysdeps/i386/fpu/e_acosh.S: Likewise.
	* sysdeps/i386/fpu/s_cexp.S: Likewise.
	* sysdeps/i386/fpu/s_ilogbl.S: Likewise.
	* sysdeps/i386/fpu/s_expm1f.S: Likewise.
	* sysdeps/i386/fpu/e_powl.S: Likewise.
	* sysdeps/i386/fpu/e_powf.S: Likewise.
	* sysdeps/i386/fpu/e_scalbf.S: Likewise.
	* sysdeps/i386/fpu/e_logl.S: Likewise.
	* sysdeps/i386/fpu/e_acoshl.S: Likewise.
	* sysdeps/i386/fpu/s_frexp.S: Likewise.
	* sysdeps/i386/fpu/e_pow.S: Likewise.
	* sysdeps/i386/fpu/e_logf.S: Likewise.
	* sysdeps/i386/fpu/e_log2.S: Likewise.
	* sysdeps/i386/fpu/s_frexpf.S: Likewise.
	* sysdeps/i386/fpu/s_cexpl.S: Likewise.
	* sysdeps/i386/fpu/s_llrintf.S: Likewise.
	* sysdeps/i386/fpu/s_ilogb.S: Likewise.
	* sysdeps/i386/fpu/e_scalbl.S: Likewise.
	* sysdeps/i386/fpu/e_atanh.S: Likewise.
	* sysdeps/i386/fpu/e_log10.S: Likewise.
	* sysdeps/i386/fpu/s_cbrtf.S: Likewise.
	* sysdeps/i386/fpu/s_cexpf.S: Likewise.
	* sysdeps/i386/fpu/s_llrintl.S: Likewise.
	* sysdeps/i386/fpu/e_log10l.S: Likewise.
	* sysdeps/i386/fpu/s_nearbyint.S: Likewise.
	* sysdeps/i386/fpu/s_asinhl.S: Likewise.
	* sysdeps/i386/fpu/e_log2f.S: Likewise.
	* sysdeps/i386/addmul_1.S: Various fixes to cfi handling.
	* sysdeps/i386/mul_1.S: Likewise.
	* sysdeps/i386/strtok.S: Likewise.
	* sysdeps/i386/sub_n.S: Likewise.
	* sysdeps/i386/submul_1.S: Likewise.
	* sysdeps/i386/i586/addmul_1.S: Likewise.
	* sysdeps/i386/i586/memcpy.S: Likewise.
	* sysdeps/i386/i586/mul_1.S: Likewise.
	* sysdeps/i386/i586/rshift.S: Likewise.
	* sysdeps/i386/i586/sub_n.S: Likewise.
	* sysdeps/i386/i586/submul_1.S: Likewise.
	* sysdeps/i386/i686/memcmp.S: Likewise.
	* sysdeps/i386/i686/memmove.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/clone.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/mmap.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/mmap64.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/setcontext.S: Likewise.
2005-05-04 17:58:13 +00:00

87 lines
2.7 KiB
ArmAsm

/* ix87 specific implementation of exp(x)-1.
Copyright (C) 1996, 1997, 2005 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
Based on code by John C. Bowman <bowman@ipp-garching.mpg.de>.
Corrections by H.J. Lu (hjl@gnu.ai.mit.edu), 1997.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
/* Using: e^x - 1 = 2^(x * log2(e)) - 1 */
#include <machine/asm.h>
#ifdef __ELF__
.section .rodata
#else
.text
#endif
.align ALIGNARG(4)
ASM_TYPE_DIRECTIVE(minus1,@object)
minus1: .double -1.0
ASM_SIZE_DIRECTIVE(minus1)
ASM_TYPE_DIRECTIVE(one,@object)
one: .double 1.0
ASM_SIZE_DIRECTIVE(one)
ASM_TYPE_DIRECTIVE(l2e,@object)
l2e: .tfloat 1.442695040888963407359924681002
ASM_SIZE_DIRECTIVE(l2e)
#ifdef PIC
#define MO(op) op##@GOTOFF(%edx)
#else
#define MO(op) op
#endif
.text
ENTRY(__expm1f)
flds 4(%esp) // x
fxam // Is NaN or +-Inf?
fstsw %ax
movb $0x45, %ch
andb %ah, %ch
cmpb $0x40, %ch
je 3f // If +-0, jump.
#ifdef PIC
LOAD_PIC_REG (dx)
#endif
cmpb $0x05, %ch
je 2f // If +-Inf, jump.
fldt MO(l2e) // log2(e) : x
fmulp // log2(e)*x
fld %st // log2(e)*x : log2(e)*x
frndint // int(log2(e)*x) : log2(e)*x
fsubr %st, %st(1) // int(log2(e)*x) : fract(log2(e)*x)
fxch // fract(log2(e)*x) : int(log2(e)*x)
f2xm1 // 2^fract(log2(e)*x)-1 : int(log2(e)*x)
fscale // 2^(log2(e)*x)-2^int(log2(e)*x) : int(log2(e)*x)
fxch // int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
fldl MO(one) // 1 : int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
fscale // 2^int(log2(e)*x) : int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
fsubrl MO(one) // 1-2^int(log2(e)*x) : int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
fstp %st(1) // 1-2^int(log2(e)*x) : 2^(log2(e)*x)-2^int(log2(e)*x)
fsubrp %st, %st(1) // 2^(log2(e)*x)
ret
2: testl $0x200, %eax // Test sign.
jz 3f // If positive, jump.
fstp %st
fldl MO(minus1) // Set result to -1.0.
3: ret
END(__expm1f)
weak_alias (__expm1f, expm1f)