From d79ac8c38f3992b4547d155f5c8e612f51d9b32e Mon Sep 17 00:00:00 2001 From: nsz Date: Thu, 29 Mar 2012 14:05:16 +0200 Subject: [PATCH] math: remove x86 modf asm the int part was wrong when -1 < x <= -0 (+0.0 instead of -0.0) and the size and performace gain of the asm version was negligible --- src/math/i386/modf.s | 28 ---------------------------- src/math/i386/modff.s | 28 ---------------------------- src/math/i386/modfl.s | 28 ---------------------------- src/math/x86_64/modfl.s | 27 --------------------------- 4 files changed, 111 deletions(-) delete mode 100644 src/math/i386/modf.s delete mode 100644 src/math/i386/modff.s delete mode 100644 src/math/i386/modfl.s delete mode 100644 src/math/x86_64/modfl.s diff --git a/src/math/i386/modf.s b/src/math/i386/modf.s deleted file mode 100644 index 8e3ea50d..00000000 --- a/src/math/i386/modf.s +++ /dev/null @@ -1,28 +0,0 @@ -.global modf -.type modf,@function -modf: - mov 12(%esp),%ecx - fldl 4(%esp) - fxam - fnstsw %ax - sahf - jnp 1f - jc 2f -1: fld1 - fld %st(1) -1: fprem - fnstsw %ax - sahf - jp 1b - fstp %st(1) - fsubr %st(0),%st(1) - fxch %st(1) - fstpl (%ecx) - ret - -2: fstpl (%ecx) - mov 4(%ecx),%eax - and $0x80000000,%eax - mov %eax,4(%esp) - flds 4(%esp) - ret diff --git a/src/math/i386/modff.s b/src/math/i386/modff.s deleted file mode 100644 index 35a08ca9..00000000 --- a/src/math/i386/modff.s +++ /dev/null @@ -1,28 +0,0 @@ -.global modff -.type modff,@function -modff: - mov 8(%esp),%ecx - flds 4(%esp) - fxam - fnstsw %ax - sahf - jnp 1f - jc 2f -1: fld1 - fld %st(1) -1: fprem - fnstsw %ax - sahf - jp 1b - fstp %st(1) - fsubr %st(0),%st(1) - fxch %st(1) - fstps (%ecx) - ret - -2: fstps (%ecx) - mov (%ecx),%eax - and $0x80000000,%eax - mov %eax,4(%esp) - flds 4(%esp) - ret diff --git a/src/math/i386/modfl.s b/src/math/i386/modfl.s deleted file mode 100644 index d650debb..00000000 --- a/src/math/i386/modfl.s +++ /dev/null @@ -1,28 +0,0 @@ -.global modfl -.type modfl,@function -modfl: - mov 16(%esp),%ecx - fldt 4(%esp) - fxam - fnstsw %ax - sahf - jnp 1f - jc 2f -1: fld1 - fld %st(1) -1: fprem - fnstsw %ax - sahf - jp 1b - fstp %st(1) - fsubr %st(0),%st(1) - fxch %st(1) - fstpt (%ecx) - ret - -2: fstpt (%ecx) - mov 6(%ecx),%eax - and $0x80000000,%eax - mov %eax,4(%esp) - flds 4(%esp) - ret diff --git a/src/math/x86_64/modfl.s b/src/math/x86_64/modfl.s deleted file mode 100644 index cd2ec46e..00000000 --- a/src/math/x86_64/modfl.s +++ /dev/null @@ -1,27 +0,0 @@ -.global modfl -.type modfl,@function -modfl: - fldt 8(%rsp) - fxam - fnstsw %ax - sahf - jnp 1f - jc 2f -1: fld1 - fld %st(1) -1: fprem - fnstsw %ax - sahf - jp 1b - fstp %st(1) - fsubr %st(0),%st(1) - fxch %st(1) - fstpt (%rdi) - ret - -2: fstpt (%rdi) - mov 6(%rdi),%eax - and $0x80000000,%eax - mov %eax,8(%rsp) - flds 8(%rsp) - ret -- 2.25.1