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author | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
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committer | Zack Weinberg <zackw@panix.com> | 2017-06-08 15:39:03 -0400 |
commit | 5046dbb4a7eba5eccfd258f92f4735c9ffc8d069 (patch) | |
tree | 4470480d904b65cf14ca524f96f79eca818c3eaf /sysdeps/i386/fpu/e_logf.S | |
parent | 199fc19d3aaaf57944ef036e15904febe877fc93 (diff) | |
download | glibc-zack/build-layout-experiment.tar glibc-zack/build-layout-experiment.tar.gz glibc-zack/build-layout-experiment.tar.bz2 glibc-zack/build-layout-experiment.zip |
Prepare for radical source tree reorganization.zack/build-layout-experiment
All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).
Diffstat (limited to 'sysdeps/i386/fpu/e_logf.S')
-rw-r--r-- | sysdeps/i386/fpu/e_logf.S | 93 |
1 files changed, 0 insertions, 93 deletions
diff --git a/sysdeps/i386/fpu/e_logf.S b/sysdeps/i386/fpu/e_logf.S deleted file mode 100644 index de967a31f5..0000000000 --- a/sysdeps/i386/fpu/e_logf.S +++ /dev/null @@ -1,93 +0,0 @@ -/* - * Written by J.T. Conklin <jtc@netbsd.org>. - * Public domain. - * Adapted for float by Ulrich Drepper <drepper@cygnus.com>. - * - * Changed to use fyl2xp1 for values near 1, <drepper@cygnus.com>. - */ - -#include <machine/asm.h> - - .section .rodata.cst8,"aM",@progbits,8 - - .p2align 3 - .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) - - -#ifdef PIC -# define MO(op) op##@GOTOFF(%edx) -#else -# define MO(op) op -#endif - - .text -ENTRY(__ieee754_logf) - fldln2 // log(2) - flds 4(%esp) // x : log(2) - fxam - fnstsw -#ifdef PIC - LOAD_PIC_REG (dx) -#endif - fld %st // x : x : log(2) - sahf - jc 3f // in case x is NaN or +-Inf -4: fsubl MO(one) // x-1 : x : log(2) - fld %st // x-1 : x-1 : x : log(2) - fabs // |x-1| : x-1 : x : log(2) - fcompl MO(limit) // x-1 : x : log(2) - fnstsw // x-1 : x : log(2) - andb $0x45, %ah - jz 2f - fxam - fnstsw - andb $0x45, %ah - cmpb $0x40, %ah - jne 5f - fabs // log(1) is +0 in all rounding modes. -5: fstp %st(1) // x-1 : log(2) - fyl2xp1 // log(x) - ret - -2: fstp %st(0) // x : log(2) - fyl2x // log(x) - ret - -3: jp 4b // in case x is +-Inf - fstp %st(1) - fstp %st(1) - ret -END (__ieee754_logf) - -ENTRY(__logf_finite) - fldln2 // log(2) - flds 4(%esp) // x : log(2) -#ifdef PIC - LOAD_PIC_REG (dx) -#endif - fld %st // x : x : log(2) - fsubl MO(one) // x-1 : x : log(2) - fld %st // x-1 : x-1 : x : log(2) - fabs // |x-1| : x-1 : x : log(2) - fcompl MO(limit) // x-1 : x : log(2) - fnstsw // x-1 : x : log(2) - andb $0x45, %ah - jz 2b - fxam - fnstsw - andb $0x45, %ah - cmpb $0x40, %ah - jne 6f - fabs // log(1) is +0 in all rounding modes. -6: fstp %st(1) // x-1 : log(2) - fyl2xp1 // log(x) - ret -END(__logf_finite) |