glibc/sysdeps/i386/fpu/e_atanh.S
Ulrich Drepper 15daa63995 Update.
1999-10-24  Ulrich Drepper  <drepper@cygnus.com>

	* math/libm-test.inc: Disable some boundary case tests for inline
	function testing.

	* math/math.h: Pretty printing.

	* sysdeps/i386/fpu/e_atanh.S: Correct handling of NaN.
	* sysdeps/i386/fpu/e_atanhf.S: Likewise.
	* sysdeps/i386/fpu/e_atanhl.S: Likewise.
	* sysdeps/i386/fpu/e_log10.S: Likewise.
	* sysdeps/i386/fpu/e_log10f.S: Likewise.
	* sysdeps/i386/fpu/e_log10l.S: Likewise.
	* sysdeps/i386/fpu/s_log1p.S: Likewise.
	* sysdeps/i386/fpu/s_log1pf.S: Likewise.
	* sysdeps/i386/fpu/s_log1pl.S: Likewise.
	* sysdeps/i386/fpu/s_log2.S: Likewise.
	* sysdeps/i386/fpu/s_log2f.S: Likewise.
	* sysdeps/i386/fpu/s_log2l.S: Likewise.

	* sysdeps/i386/fpu/libm-test-ulps: New file.

	* sysdeps/i386/fpu/bits/mathinline.h (__expm1_code): Correct return
	value for x == 0.
	(pow): Correct case x == 0.
	(__sgn1l): Correct handling of -0.0.

1999-10-22  Andreas Jaeger  <aj@suse.de>

	* math/libm-test.inc (asinh_test): Add test for NaN as input parameter.
	(atan_test): Likewise.
	(atanh_test): Likewise.
	(atan2_test): Likewise.
	(carg_test): Likewise.
	(ceil_test): Likewise.
	(cos_test): Likewise.
	(cosh_test): Likewise.
	(cpow_test): Likewise.
	(erf_test): Likewise.
	(erfc_test): Likewise.
	(exp_test): Likewise.
	(exp10_test): Likewise.
	(exp2_test): Likewise.
	(expm1_test): Likewise.
	(fabs_test): Likewise.
	(floor_test): Likewise.
	(fmod_test): Likewise.
	(gamma_test): Likewise.
	(lgamma_test): Likewise.
	(log10_test): Likewise.
	(log1p_test): Likewise.
	(log2_test): Likewise.
	(logb_test): Likewise.
	(nearbyint_test): Likewise.
	(remainder_test): Likewise.
	(remquo_test): Likewise.
	(sin_test): Likewise.
	(sincos_test): Likewise.
	(sinh_test): Likewise.
	(sqrt_test): Likewise.
	(tan_test): Likewise.
	(tanh_test): Likewise.
	(tgamma_test): Likewise.
1999-10-24 22:04:52 +00:00

115 lines
3.0 KiB
ArmAsm
Raw Blame History

/* ix87 specific implementation of arctanh function.
Copyright (C) 1996, 1999 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <machine/asm.h>
#ifdef __ELF__
.section .rodata
#else
.text
#endif
.align ALIGNARG(4)
ASM_TYPE_DIRECTIVE(half,@object)
half: .double 0.5
ASM_SIZE_DIRECTIVE(half)
ASM_TYPE_DIRECTIVE(one,@object)
one: .double 1.0
ASM_SIZE_DIRECTIVE(one)
ASM_TYPE_DIRECTIVE(limit,@object)
limit: .double 0.29
ASM_SIZE_DIRECTIVE(limit)
ASM_TYPE_DIRECTIVE(ln2_2,@object)
ln2_2: .tfloat 0.3465735902799726547086160
ASM_SIZE_DIRECTIVE(ln2_2)
#ifdef PIC
#define MO(op) op##@GOTOFF(%edx)
#else
#define MO(op) op
#endif
.text
ENTRY(__ieee754_atanh)
movl 8(%esp), %ecx
movl %ecx, %eax
andl $0x7fffffff, %eax
cmpl $0x7ff00000, %eax
jae 5f
7:
#ifdef PIC
call 1f
1: popl %edx
addl $_GLOBAL_OFFSET_TABLE_+[.-1b], %edx
#endif
andl $0x80000000, %ecx // ECX == 0 iff X >= 0
fldt MO(ln2_2) // 0.5*ln2
xorl %ecx, 8(%esp)
fldl 4(%esp) // |x| : 0.5*ln2
fcoml MO(half) // |x| : 0.5*ln2
fld %st // |x| : |x| : 0.5*ln2
fnstsw // |x| : |x| : 0.5*ln2
sahf
jae 2f
fadd %st, %st(1) // |x| : 2*|x| : 0.5*ln2
fld %st // |x| : |x| : 2*|x| : 0.5*ln2
fsubrl MO(one) // 1-|x| : |x| : 2*|x| : 0.5*ln2
fxch // |x| : 1-|x| : 2*|x| : 0.5*ln2
fmul %st(2) // 2*|x|^2 : 1-|x| : 2*|x| : 0.5*ln2
fdivp // (2*|x|^2)/(1-|x|) : 2*|x| : 0.5*ln2
faddp // 2*|x|+(2*|x|^2)/(1-|x|) : 0.5*ln2
fcoml MO(limit) // 2*|x|+(2*|x|^2)/(1-|x|) : 0.5*ln2
fnstsw // 2*|x|+(2*|x|^2)/(1-|x|) : 0.5*ln2
sahf
jae 4f
fyl2xp1 // 0.5*ln2*ld(1+2*|x|+(2*|x|^2)/(1-|x|))
jecxz 3f
fchs // 0.5*ln2*ld(1+2*x+(2*x^2)/(1-x))
3: ret
.align ALIGNARG(4)
4: faddl MO(one) // 1+2*|x|+(2*|x|^2)/(1-|x|) : 0.5*ln2
fyl2x // 0.5*ln2*ld(1+2*|x|+(2*|x|^2)/(1-|x|))
jecxz 3f
fchs // 0.5*ln2*ld(1+2*x+(2*x^2)/(1-x))
3: ret
.align ALIGNARG(4)
2: faddl MO(one) // 1+|x| : |x| : 0.5*ln2
fxch // |x| : 1+|x| : 0.5*ln2
fsubrl MO(one) // 1-|x| : 1+|x| : 0.5*ln2
fdivrp // (1+|x|)/(1-|x|) : 0.5*ln2
fyl2x // 0.5*ln2*ld((1+|x|)/(1-|x|))
jecxz 3f
fchs // 0.5*ln2*ld((1+x)/(1-x))
3: ret
// x == NaN or <EFBFBD>Inf
5: ja 6f
cmpl $0, 4(%esp)
je 7b
6: fldl 4(%esp)
ret
END(__ieee754_atanh)