diff options
Diffstat (limited to 'sysdeps/libm-i387/s_exp2.S')
| -rw-r--r-- | sysdeps/libm-i387/s_exp2.S | 37 |
1 files changed, 0 insertions, 37 deletions
diff --git a/sysdeps/libm-i387/s_exp2.S b/sysdeps/libm-i387/s_exp2.S deleted file mode 100644 index 778c0c0eb6..0000000000 --- a/sysdeps/libm-i387/s_exp2.S +++ /dev/null @@ -1,37 +0,0 @@ -/* - * Written by J.T. Conklin <jtc@netbsd.org>. - * Adapted for exp2 by Ulrich Drepper <drepper@cygnus.com>. - * Public domain. - */ - -#include <machine/asm.h> - -ENTRY(__ieee754_exp2) - fldl 4(%esp) -/* 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. */ - 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) - ret - -1: testl $0x200, %eax /* Test sign. */ - jz 2f /* If positive, jump. */ - fstp %st - fldz /* Set result to 0. */ -2: ret -END (__ieee754_exp2) |