diff options
Diffstat (limited to 'sysdeps/i386/fpu/e_atanhl.S')
| -rw-r--r-- | sysdeps/i386/fpu/e_atanhl.S | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/sysdeps/i386/fpu/e_atanhl.S b/sysdeps/i386/fpu/e_atanhl.S deleted file mode 100644 index 31ff7e5182..0000000000 --- a/sysdeps/i386/fpu/e_atanhl.S +++ /dev/null @@ -1,127 +0,0 @@ -/* ix87 specific implementation of arctanh function. - Copyright (C) 1996-2017 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 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, see - <http://www.gnu.org/licenses/>. */ - -#include <machine/asm.h> - - .section .rodata - - .align ALIGNARG(4) - /* Please note that we use double values for 0.5 and 1.0. These - numbers have exact representations and so we don't get accuracy - problems. The advantage is that the code is simpler. */ - .type half,@object -half: .double 0.5 - ASM_SIZE_DIRECTIVE(half) - .type one,@object -one: .double 1.0 - ASM_SIZE_DIRECTIVE(one) - /* It is not important that this constant is precise. It is only - a value which is known to be on the safe side for using the - fyl2xp1 instruction. */ - .type limit,@object -limit: .double 0.29 - ASM_SIZE_DIRECTIVE(limit) - .align ALIGNARG(4) - .type 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_atanhl) - movl 12(%esp), %ecx - - movl %ecx, %eax - andl $0x7fff, %eax - cmpl $0x7fff, %eax - je 5f - cmpl $0x3fdf, %eax - jge 7f - // Exponent below -32; return x, with underflow if subnormal. - fldt 4(%esp) - cmpl $0, %eax - jne 8f - fld %st(0) - fmul %st(0) - fstp %st(0) -8: ret -7: - -#ifdef PIC - LOAD_PIC_REG (dx) -#endif - - andl $0x8000, %ecx // ECX == 0 iff X >= 0 - - fldt MO(ln2_2) // 0.5*ln2 - xorl %ecx, 12(%esp) - fldt 4(%esp) // |x| : 0.5*ln2 - fcoml MO(half) // |x| : 0.5*ln2 - fld %st(0) // |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 ħInf -5: cmpl $0x80000000, 8(%esp) - ja 6f - cmpl $0, 4(%esp) - je 7b -6: fldt 4(%esp) - fadd %st(0) - ret -END(__ieee754_atanhl) -strong_alias (__ieee754_atanhl, __atanhl_finite) |