| 1 | /* |
|---|---|
| 2 | * Public domain. |
| 3 | * |
| 4 | * Adapted for i686 instructions. |
| 5 | */ |
| 6 | |
| 7 | #include <machine/asm.h> |
| 8 | #include <libm-alias-finite.h> |
| 9 | |
| 10 | .text |
| 11 | ENTRY(__ieee754_log) |
| 12 | fldln2 // log(2) |
| 13 | fldl 4(%esp) // x : log(2) |
| 14 | fucomi %st |
| 15 | jp 3f |
| 16 | fyl2x // log(x) |
| 17 | ret |
| 18 | |
| 19 | 3: fstp %st(1) |
| 20 | ret |
| 21 | END (__ieee754_log) |
| 22 | |
| 23 | ENTRY(__log_finite) |
| 24 | fldln2 // log(2) |
| 25 | fldl 4(%esp) // x : log(2) |
| 26 | fyl2x // log(x) |
| 27 | ret |
| 28 | END(__log_finite) |
| 29 | libm_alias_finite (__log_finite, __log) |
| 30 |