| 1 | /* |
|---|---|
| 2 | * Public domain. |
| 3 | */ |
| 4 | |
| 5 | #include <machine/asm.h> |
| 6 | #include <libm-alias-finite.h> |
| 7 | |
| 8 | RCSID("$NetBSD: $") |
| 9 | |
| 10 | /* acos = atan (sqrt(1 - x^2) / x) */ |
| 11 | ENTRY(__ieee754_acosf) |
| 12 | flds 4(%esp) /* x */ |
| 13 | fld %st |
| 14 | fmul %st(0) /* x^2 */ |
| 15 | fld1 |
| 16 | fsubp /* 1 - x^2 */ |
| 17 | fsqrt /* sqrt (1 - x^2) */ |
| 18 | fabs |
| 19 | fxch %st(1) |
| 20 | fpatan |
| 21 | ret |
| 22 | END (__ieee754_acosf) |
| 23 | libm_alias_finite (__ieee754_acosf, __acosf) |
| 24 |