diff options
Diffstat (limited to 'libc/sysdeps/i386/i686/fpu/e_log.S')
| -rw-r--r-- | libc/sysdeps/i386/i686/fpu/e_log.S | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/libc/sysdeps/i386/i686/fpu/e_log.S b/libc/sysdeps/i386/i686/fpu/e_log.S new file mode 100644 index 000000000..73060b088 --- /dev/null +++ b/libc/sysdeps/i386/i686/fpu/e_log.S @@ -0,0 +1,29 @@ +/* + * Written by J.T. Conklin <jtc@netbsd.org>. + * Public domain. + * + * Adapted for i686 instructions. + */ + +#include <machine/asm.h> + + + .text +ENTRY(__ieee754_log) + fldln2 // log(2) + fldl 4(%esp) // x : log(2) + fucomi %st + jp 3f + fyl2x // log(x) + ret + +3: fstp %st(1) + ret +END (__ieee754_log) + +ENTRY(__log_finite) + fldln2 // log(2) + fldl 4(%esp) // x : log(2) + fyl2x // log(x) + ret +END(__log_finite) |