projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| c9cf6dde | 1 | /* |
| c9cf6dde AJ |
2 | * Public domain. |
| 3 | * | |
| c9cf6dde AJ |
4 | */ |
| 5 | ||
| 6 | #include <machine/asm.h> | |
| 220622dd | 7 | #include <libm-alias-finite.h> |
| c9cf6dde | 8 | |
| 0ac5ae23 | 9 | .section .rodata.cst8,"aM",@progbits,8 |
| 622c86f4 | 10 | |
| 0ac5ae23 | 11 | .p2align 3 |
| b67e9372 | 12 | .type one,@object |
| c9cf6dde AJ |
13 | one: .double 1.0 |
| 14 | ASM_SIZE_DIRECTIVE(one) | |
| 15 | /* It is not important that this constant is precise. It is only | |
| 16 | a value which is known to be on the safe side for using the | |
| 17 | fyl2xp1 instruction. */ | |
| b67e9372 | 18 | .type limit,@object |
| c9cf6dde AJ |
19 | limit: .double 0.29 |
| 20 | ASM_SIZE_DIRECTIVE(limit) | |
| 21 | ||
| 22 | ||
| 23 | #ifdef PIC | |
| 0ac5ae23 | 24 | # define MO(op) op##(%rip) |
| c9cf6dde | 25 | #else |
| 0ac5ae23 | 26 | # define MO(op) op |
| c9cf6dde AJ |
27 | #endif |
| 28 | ||
| 29 | .text | |
| 30 | ENTRY(__ieee754_log2l) | |
| 31 | fldl MO(one) | |
| 32 | fldt 8(%rsp) // x : 1 | |
| 33 | fxam | |
| 34 | fnstsw | |
| 35 | fld %st // x : x : 1 | |
| 6b2665f5 | 36 | testb $1, %ah |
| c9cf6dde AJ |
37 |