diff options
Diffstat (limited to 'sysdeps/i386/i686/fpu/e_logl.S')
-rw-r--r-- | sysdeps/i386/i686/fpu/e_logl.S | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/sysdeps/i386/i686/fpu/e_logl.S b/sysdeps/i386/i686/fpu/e_logl.S deleted file mode 100644 index 7e3bc8d817..0000000000 --- a/sysdeps/i386/i686/fpu/e_logl.S +++ /dev/null @@ -1,94 +0,0 @@ -/* - * Written by J.T. Conklin <jtc@netbsd.org>. - * Public domain. - * - * Adapted for `long double' by Ulrich Drepper <drepper@cygnus.com>. - * Changed to use fyl2xp1 for values near 1, <drepper@cygnus.com>. - * Adapted for i686 instructions. - */ - -#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_logl) - fldln2 // log(2) - fldt 4(%esp) // x : log(2) - fucomi %st - jp 3f -#ifdef PIC - LOAD_PIC_REG (dx) -#endif - fld %st // x : x : log(2) - movzwl 4+8(%esp), %eax - cmpl $0xc000, %eax - jae 5f // x <= -2, avoid overflow from -LDBL_MAX - 1. - fsubl MO(one) // x-1 : x : log(2) -5: fld %st // x-1 : x-1 : x : log(2) - fabs // |x-1| : x-1 : x : log(2) - fld MO(limit) // 0.29 : |x-1| : x-1 : x : log(2) - fcomip %st(1) // |x-1| : x-1 : x : log(2) - fstp %st(0) // x-1 : x : log(2) - jc 2f - fxam - fnstsw - andb $0x45, %ah - cmpb $0x40, %ah - jne 4f - fabs // log(1) is +0 in all rounding modes. -4: fstp %st(1) // x-1 : log(2) - fyl2xp1 // log(x) - ret - -2: fstp %st(0) // x : log(2) - fyl2x // log(x) - ret - -3: fstp %st(1) - fadd %st(0) - ret -END (__ieee754_logl) - -ENTRY(__logl_finite) - fldln2 // log(2) - fldt 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) - fld MO(limit) // 0.29 : |x-1| : x-1 : x : log(2) - fcomip %st(1) // |x-1| : x-1 : x : log(2) - fstp %st(0) // x-1 : x : log(2) - jc 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(__logl_finite) |