diff options
Diffstat (limited to 'sysdeps/x86_64/fpu/e_exp2l.S')
| -rw-r--r-- | sysdeps/x86_64/fpu/e_exp2l.S | 58 |
1 files changed, 0 insertions, 58 deletions
diff --git a/sysdeps/x86_64/fpu/e_exp2l.S b/sysdeps/x86_64/fpu/e_exp2l.S deleted file mode 100644 index 0e059b7565..0000000000 --- a/sysdeps/x86_64/fpu/e_exp2l.S +++ /dev/null @@ -1,58 +0,0 @@ -/* - * Written by J.T. Conklin <jtc@netbsd.org>. - * Adapted for exp2 by Ulrich Drepper <drepper@cygnus.com>. - * Adapted for x86-64 by Andreas Jaeger <aj@suse.de>. - * Public domain. - */ - -#include <machine/asm.h> -#include <x86_64-math-asm.h> - -DEFINE_LDBL_MIN - -#ifdef PIC -# define MO(op) op##(%rip) -#else -# define MO(op) op -#endif - - .text -ENTRY(__ieee754_exp2l) - fldt 8(%rsp) -/* I added the following ugly construct because exp(+-Inf) resulted - in NaN. The ugliness results from the bright minds at Intel. - For the i686 the code can be written better. - -- drepper@cygnus.com. */ - fxam /* Is NaN or +-Inf? */ - fstsw %ax - movb $0x45, %dh - andb %ah, %dh - cmpb $0x05, %dh - je 1f /* Is +-Inf, jump. */ - movzwl 8+8(%rsp), %eax - andl $0x7fff, %eax - cmpl $0x3fbe, %eax - jge 3f - /* Argument's exponent below -65, result rounds to 1. */ - fld1 - faddp - ret -3: fld %st - frndint /* int(x) */ - fsubr %st,%st(1) /* fract(x) */ - fxch - f2xm1 /* 2^(fract(x)) - 1 */ - fld1 - faddp /* 2^(fract(x)) */ - fscale /* e^x */ - fstp %st(1) - LDBL_CHECK_FORCE_UFLOW_NONNEG_NAN - ret - -1: testl $0x200, %eax /* Test sign. */ - jz 2f /* If positive, jump. */ - fstp %st - fldz /* Set result to 0. */ -2: ret -END (__ieee754_exp2l) -strong_alias (__ieee754_exp2l, __exp2l_finite) |