diff options
Diffstat (limited to 'sysdeps/m68k/fpu/s_ilogb.c')
| -rw-r--r-- | sysdeps/m68k/fpu/s_ilogb.c | 26 |
1 files changed, 19 insertions, 7 deletions
diff --git a/sysdeps/m68k/fpu/s_ilogb.c b/sysdeps/m68k/fpu/s_ilogb.c index a081a884d4..2d8f7d5082 100644 --- a/sysdeps/m68k/fpu/s_ilogb.c +++ b/sysdeps/m68k/fpu/s_ilogb.c @@ -19,21 +19,33 @@ #define __LIBC_M81_MATH_INLINES #include <math.h> -#ifndef FUNC -#define FUNC ilogb +#ifndef SUFF +#define SUFF #endif #ifndef float_type #define float_type double #endif -#define __CONCATX(a,b) __CONCAT(a,b) +#define CONCATX(a,b) __CONCAT(a,b) +#define s(name) CONCATX(name,SUFF) +#define m81(func) __m81_u(s(func)) int -__CONCATX(__,FUNC) (x) - float_type x; +s(__ilogb) (float_type x) { - return __m81_u(__CONCATX(__,FUNC))(x); + float_type result; + unsigned long x_cond; + + x_cond = __m81_test (x); + /* We must return consistent values for zero and NaN. */ + if (x_cond & __M81_COND_ZERO) + return FP_ILOGB0; + if (x_cond & (__M81_COND_NAN | __M81_COND_INF)) + return FP_ILOGBNAN; + + __asm ("fgetexp%.x %1, %0" : "=f" (result) : "f" (x)); + return (int) result; } #define weak_aliasx(a,b) weak_alias(a,b) -weak_aliasx (__CONCATX(__,FUNC), FUNC) +weak_aliasx (s(__ilogb), s(ilogb)) |