diff options
Diffstat (limited to 'sysdeps/i386')
| -rw-r--r-- | sysdeps/i386/fpu/__math.h | 69 |
1 files changed, 50 insertions, 19 deletions
diff --git a/sysdeps/i386/fpu/__math.h b/sysdeps/i386/fpu/__math.h index 86793babe5..080d0ec220 100644 --- a/sysdeps/i386/fpu/__math.h +++ b/sysdeps/i386/fpu/__math.h @@ -96,6 +96,7 @@ fabs (double __x) return __value; } +/* The argument range of this inline version is limited. */ __MATH_INLINE double sin (double __x); __MATH_INLINE double sin (double __x) @@ -108,6 +109,7 @@ sin (double __x) return __value; } +/* The argument range of this inline version is limited. */ __MATH_INLINE double cos (double __x); __MATH_INLINE double cos (double __x) @@ -371,7 +373,7 @@ ceil (double __x) /* Optimized versions for some non-standardized functions. */ -#ifdef __USE_MISC +#if defined __USE_ISOC9X || defined __USE_MISC __MATH_INLINE double hypot (double __x, double __y); __MATH_INLINE double @@ -424,22 +426,6 @@ atanh (double __x) return -0.5 * __log1p (-(__y + __y) / (1.0 + __y)) * __sgn1 (__x); } -__MATH_INLINE double coshm1 (double __x); -__MATH_INLINE double -coshm1 (double __x) -{ - register double __exm1 = __expm1 (fabs (__x)); - - return 0.5 * (__exm1 / (__exm1 + 1.0)) * __exm1; -} - -__MATH_INLINE double acosh1p (double __x); -__MATH_INLINE double -acosh1p (double __x) -{ - return __log1p (__x + sqrt (__x) * sqrt (__x + 2.0)); -} - __MATH_INLINE double logb (double __x); __MATH_INLINE double logb (double __x) @@ -467,13 +453,58 @@ drem (double __x, double __y) return __value; } +/* This function is used in the `isfinite' macro. */ +__MATH_INLINE int __finite (double __x); +__MATH_INLINE int +__finite (double __x) +{ + register int __result; + __asm__ __volatile__ + ("orl $x0x800fffff, %0\n\t" + "incl %0\n\t" + "shrl $31, %0" + : "=q" (__result) : "0" (((int *) &__x)[1])); + return __result; +} +#endif + +#ifdef __USE_MISC +__MATH_INLINE double coshm1 (double __x); +__MATH_INLINE double +coshm1 (double __x) +{ + register double __exm1 = __expm1 (fabs (__x)); + + return 0.5 * (__exm1 / (__exm1 + 1.0)) * __exm1; +} + +__MATH_INLINE double acosh1p (double __x); +__MATH_INLINE double +acosh1p (double __x) +{ + return __log1p (__x + sqrt (__x) * sqrt (__x + 2.0)); +} + __MATH_INLINE void sincos (double __x, double *__sinx, double *__cosx); __MATH_INLINE void sincos (double __x, double *__sinx, double *__cosx) { register double __cosr, __sinr; __asm __volatile__ - ("fsincos" + ("fsincos\n\t" + "fnstsw %%ax\n\t" + "testl $0x400, %%eax\n\t" + "jz 1f\n\t" + "fldpi\n\t" + "fadd %%st(0)\n\t" + "fxch %%st(1)\n\t" + "2: fprem1\n\t" + "fnstsw %%ax\n\t" + "testl $0x400, %%eax\n\t" + "jnz 2b\n\t" + "fstp %%st(1)\n\t" + "fsincos\n\t" + "1:" : "=t" (__cosr), "=u" (__sinr) : "0" (__x)); *__sinx = __sinr; @@ -484,7 +515,7 @@ __MATH_INLINE double sgn (double __x); __MATH_INLINE double sgn (double __x) { - return (__x == 0.0 ? 0.0 : (__x > 0.0 ? 1.0 : -1.0)); + return __x == 0.0 ? 0.0 : (__x > 0.0 ? 1.0 : -1.0); } __MATH_INLINE double pow2 (double __x); |