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-rw-r--r--libc/sysdeps/linux/i386/bits/mathinline.h124
1 files changed, 86 insertions, 38 deletions
diff --git a/libc/sysdeps/linux/i386/bits/mathinline.h b/libc/sysdeps/linux/i386/bits/mathinline.h
index 489032624..e04ce9509 100644
--- a/libc/sysdeps/linux/i386/bits/mathinline.h
+++ b/libc/sysdeps/linux/i386/bits/mathinline.h
@@ -1,5 +1,6 @@
/* Inline math functions for i387.
- Copyright (C) 1995,96,97,98,99,2000,2001 Free Software Foundation, Inc.
+ Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004
+ Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by John C. Bowman <bowman@math.ualberta.ca>, 1995.
@@ -30,19 +31,18 @@
#if defined __USE_ISOC99 && defined __GNUC__ && __GNUC__ >= 2
-# if __GNUC_PREREQ (2,97)
/* GCC 2.97 and up have builtins that actually can be used. */
-# define isgreater(x, y) __builtin_isgreater (x, y)
-# define isgreaterequal(x, y) __builtin_isgreaterequal (x, y)
-# define isless(x, y) __builtin_isless (x, y)
-# define islessequal(x, y) __builtin_islessequal (x, y)
-# define islessgreater(x, y) __builtin_islessgreater (x, y)
-# define isunordered(x, y) __builtin_isunordered (x, y)
-# else
+# if !__GNUC_PREREQ (2,97)
/* ISO C99 defines some macros to perform unordered comparisons. The
ix87 FPU supports this with special opcodes and we should use them.
These must not be inline functions since we have to be able to handle
all floating-point types. */
+# undef isgreater
+# undef isgreaterequal
+# undef isless
+# undef islessequal
+# undef islessgreater
+# undef isunordered
# ifdef __i686__
/* For the PentiumPro and more recent processors we can provide
better code. */
@@ -217,7 +217,7 @@ __NTH (__signbitl (long double __x))
__inline_mathcode_ (float, __CONCAT(func,f), arg, code) \
__inline_mathcode_ (long double, __CONCAT(func,l), arg, code)
# define __inline_mathcodeNP(func, arg, code) \
- __inline_mathcodeNP_ (double, func, arg, code) \
+ __inline_mathcodeNP_ (double, func, arg, code) \
__inline_mathcodeNP_ (float, __CONCAT(func,f), arg, code) \
__inline_mathcodeNP_ (long double, __CONCAT(func,l), arg, code)
# define __inline_mathcode2(func, arg1, arg2, code) \
@@ -225,7 +225,7 @@ __NTH (__signbitl (long double __x))
__inline_mathcode2_ (float, __CONCAT(func,f), arg1, arg2, code) \
__inline_mathcode2_ (long double, __CONCAT(func,l), arg1, arg2, code)
# define __inline_mathcodeNP2(func, arg1, arg2, code) \
- __inline_mathcodeNP2_ (double, func, arg1, arg2, code) \
+ __inline_mathcodeNP2_ (double, func, arg1, arg2, code) \
__inline_mathcodeNP2_ (float, __CONCAT(func,f), arg1, arg2, code) \
__inline_mathcodeNP2_ (long double, __CONCAT(func,l), arg1, arg2, code)
# define __inline_mathcode3(func, arg1, arg2, arg3, code) \
@@ -234,7 +234,7 @@ __NTH (__signbitl (long double __x))
__inline_mathcode3_ (long double, __CONCAT(func,l), arg1, arg2, arg3, code)
# define __inline_mathcodeNP3(func, arg1, arg2, arg3, code) \
__inline_mathcodeNP3_ (double, func, arg1, arg2, arg3, code) \
- __inline_mathcodeNP3_ (float, __CONCAT(func,f), arg1, arg2, arg3, code) \
+ __inline_mathcodeNP3_ (float, __CONCAT(func,f), arg1, arg2, arg3, code) \
__inline_mathcodeNP3_ (long double, __CONCAT(func,l), arg1, arg2, arg3, code)
#else
# define __inline_mathcode(func, arg, code) \
@@ -363,7 +363,13 @@ __NTH (__sincosl (long double __x, long double *__sinx, long double *__cosx))
/* Optimized inline implementation, sometimes with reduced precision
and/or argument range. */
-# define __expm1_code \
+# if __GNUC_PREREQ (3, 5)
+# define __expm1_code \
+ register long double __temp; \
+ __temp = __builtin_expm1l (__x); \
+ return __temp ? __temp : __x
+# else
+# define __expm1_code \
register long double __value; \
register long double __exponent; \
register long double __temp; \
@@ -381,11 +387,15 @@ __NTH (__sincosl (long double __x, long double *__sinx, long double *__cosx))
("fscale # 2^int(x * log2(e))\n\t" \
: "=t" (__temp) : "0" (1.0), "u" (__exponent)); \
__temp -= 1.0; \
- return __temp + __value ? __temp + __value : __x
+ __temp += __value; \
+ return __temp ? __temp : __x
+# endif
__inline_mathcodeNP_ (long double, __expm1l, __x, __expm1_code)
-
-# define __exp_code \
+# if __GNUC_PREREQ (3, 4)
+__inline_mathcodeNP_ (long double, __expl, __x, return __builtin_expl (__x))
+# else
+# define __exp_code \
register long double __value; \
register long double __exponent; \
__asm __volatile__ \
@@ -404,28 +414,39 @@ __inline_mathcodeNP_ (long double, __expm1l, __x, __expm1_code)
return __value
__inline_mathcodeNP (exp, __x, __exp_code)
__inline_mathcodeNP_ (long double, __expl, __x, __exp_code)
+# endif
+# if !__GNUC_PREREQ (3, 5)
__inline_mathcodeNP (tan, __x, \
register long double __value; \
- register long double __value2 __attribute_used__; \
+ register long double __value2 __attribute__ ((__unused__)); \
__asm __volatile__ \
("fptan" \
: "=t" (__value2), "=u" (__value) : "0" (__x)); \
return __value)
+# endif
#endif /* __FAST_MATH__ */
-#define __atan2_code \
+#if __GNUC_PREREQ (3, 4)
+__inline_mathcodeNP2_ (long double, __atan2l, __y, __x,
+ return __builtin_atan2l (__y, __x))
+#else
+# define __atan2_code \
register long double __value; \
__asm __volatile__ \
("fpatan" \
: "=t" (__value) : "0" (__x), "u" (__y) : "st(1)"); \
return __value
+# ifdef __FAST_MATH__
__inline_mathcodeNP2 (atan2, __y, __x, __atan2_code)
+# endif
__inline_mathcodeNP2_ (long double, __atan2l, __y, __x, __atan2_code)
+#endif
+#if defined __FAST_MATH__ && !__GNUC_PREREQ (3, 5)
__inline_mathcodeNP2 (fmod, __x, __y, \
register long double __value; \
__asm __volatile__ \
@@ -435,15 +456,25 @@ __inline_mathcodeNP2 (fmod, __x, __y, \
"jp 1b" \
: "=t" (__value) : "0" (__x), "u" (__y) : "ax", "cc"); \
return __value)
+#endif
+#ifdef __FAST_MATH__
+# if !__GNUC_PREREQ (3,3)
__inline_mathopNP (sqrt, "fsqrt")
__inline_mathopNP_ (long double, __sqrtl, "fsqrt")
+# define __libc_sqrtl(n) __sqrtl (n)
+# else
+# define __libc_sqrtl(n) __builtin_sqrtl (n)
+# endif
+#endif
#if __GNUC_PREREQ (2, 8)
__inline_mathcodeNP_ (double, fabs, __x, return __builtin_fabs (__x))
+# if defined __USE_MISC || defined __USE_ISOC99
__inline_mathcodeNP_ (float, fabsf, __x, return __builtin_fabsf (__x))
__inline_mathcodeNP_ (long double, fabsl, __x, return __builtin_fabsl (__x))
+# endif
__inline_mathcodeNP_ (long double, __fabsl, __x, return __builtin_fabsl (__x))
#else
__inline_mathop (fabs, "fabs")
@@ -451,19 +482,26 @@ __inline_mathop_ (long double, __fabsl, "fabs")
#endif
#ifdef __FAST_MATH__
+# if !__GNUC_PREREQ (3, 4)
/* The argument range of this inline version is reduced. */
__inline_mathopNP (sin, "fsin")
/* The argument range of this inline version is reduced. */
__inline_mathopNP (cos, "fcos")
__inline_mathop_declNP (log, "fldln2; fxch; fyl2x", "0" (__x) : "st(1)")
+# endif
+
+# if !__GNUC_PREREQ (3, 5)
__inline_mathop_declNP (log10, "fldlg2; fxch; fyl2x", "0" (__x) : "st(1)")
-__inline_mathcodeNP (asin, __x, return __atan2l (__x, __sqrtl (1.0 - __x * __x)))
-__inline_mathcodeNP (acos, __x, return __atan2l (__sqrtl (1.0 - __x * __x), __x))
-#endif /* __FAST_MATH__ */
+__inline_mathcodeNP (asin, __x, return __atan2l (__x, __libc_sqrtl (1.0 - __x * __x)))
+__inline_mathcodeNP (acos, __x, return __atan2l (__libc_sqrtl (1.0 - __x * __x), __x))
+# endif
+# if !__GNUC_PREREQ (3, 4)
__inline_mathop_declNP (atan, "fld1; fpatan", "0" (__x) : "st(1)")
+# endif
+#endif /* __FAST_MATH__ */
__inline_mathcode_ (long double, __sgn1l, __x, \
__extension__ union { long double __xld; unsigned int __xi[3]; } __n = \
@@ -511,7 +549,8 @@ __inline_mathcodeNP (ceil, __x, \
__asm __volatile ("fldcw %0" : : "m" (__cw)); \
return __value)
-#define __ldexp_code \
+#ifdef __FAST_MATH__
+# define __ldexp_code \
register long double __value; \
__asm __volatile__ \
("fscale" \
@@ -523,6 +562,7 @@ __NTH (ldexp (double __x, int __y))
{
__ldexp_code;
}
+#endif
/* Optimized versions for some non-standardized functions. */
@@ -530,12 +570,12 @@ __NTH (ldexp (double __x, int __y))
# ifdef __FAST_MATH__
__inline_mathcodeNP (expm1, __x, __expm1_code)
-# endif
/* We cannot rely on M_SQRT being defined. So we do it for ourself
here. */
-# define __M_SQRT2 1.41421356237309504880L /* sqrt(2) */
+# define __M_SQRT2 1.41421356237309504880L /* sqrt(2) */
+# if !__GNUC_PREREQ (3, 5)
__inline_mathcodeNP (log1p, __x, \
register long double __value; \
if (__fabsl (__x) >= 1.0 - 0.5 * __M_SQRT2) \
@@ -547,24 +587,27 @@ __inline_mathcodeNP (log1p, __x, \
"fyl2xp1" \
: "=t" (__value) : "0" (__x) : "st(1)"); \
return __value)
+# endif
/* The argument range of the inline version of asinhl is slightly reduced. */
__inline_mathcodeNP (asinh, __x, \
register long double __y = __fabsl (__x); \
- return (log1pl (__y * __y / (__sqrtl (__y * __y + 1.0) + 1.0) + __y) \
+ return (log1pl (__y * __y / (__libc_sqrtl (__y * __y + 1.0) + 1.0) + __y) \
* __sgn1l (__x)))
__inline_mathcodeNP (acosh, __x, \
- return logl (__x + __sqrtl (__x - 1.0) * __sqrtl (__x + 1.0)))
+ return logl (__x + __libc_sqrtl (__x - 1.0) * __libc_sqrtl (__x + 1.0)))
__inline_mathcodeNP (atanh, __x, \
register long double __y = __fabsl (__x); \
return -0.5 * log1pl (-(__y + __y) / (1.0 + __y)) * __sgn1l (__x))
/* The argument range of the inline version of hypotl is slightly reduced. */
-__inline_mathcodeNP2 (hypot, __x, __y, return __sqrtl (__x * __x + __y * __y))
+__inline_mathcodeNP2 (hypot, __x, __y,
+ return __libc_sqrtl (__x * __x + __y * __y))
+# if !__GNUC_PREREQ (3, 5)
__inline_mathcodeNP(logb, __x, \
register long double __value; \
register long double __junk; \
@@ -572,13 +615,17 @@ __inline_mathcodeNP(logb, __x, \
("fxtract\n\t" \
: "=t" (__junk), "=u" (__value) : "0" (__x)); \
return __value)
+# endif
+# endif
#endif
#ifdef __USE_ISOC99
-#ifdef __FAST_MATH__
+# ifdef __FAST_MATH__
+
+# if !__GNUC_PREREQ (3, 5)
__inline_mathop_declNP (log2, "fld1; fxch; fyl2x", "0" (__x) : "st(1)")
-#endif /* __FAST_MATH__ */
+# endif
__MATH_INLINE float
__NTH (ldexpf (float __x, int __y))
@@ -592,13 +639,12 @@ __NTH (ldexpl (long double __x, int __y))
__ldexp_code;
}
-#ifdef __FAST_MATH__
__inline_mathcodeNP3 (fma, __x, __y, __z, return (__x * __y) + __z)
__inline_mathopNP (rint, "frndint")
-#endif /* __FAST_MATH__ */
+# endif /* __FAST_MATH__ */
-#define __lrint_code \
+# define __lrint_code \
long int __lrintres; \
__asm__ __volatile__ \
("fistpl %0" \
@@ -619,9 +665,9 @@ __NTH (lrintl (long double __x))
{
__lrint_code;
}
-#undef __lrint_code
+# undef __lrint_code
-#define __llrint_code \
+# define __llrint_code \
long long int __llrintres; \
__asm__ __volatile__ \
("fistpll %0" \
@@ -642,13 +688,14 @@ __NTH (llrintl (long double __x))
{
__llrint_code;
}
-#undef __llrint_code
+# undef __llrint_code
#endif
#ifdef __USE_MISC
+# if defined __FAST_MATH__ && !__GNUC_PREREQ (3, 5)
__inline_mathcodeNP2 (drem, __x, __y, \
register double __value; \
register int __clobbered; \
@@ -659,6 +706,7 @@ __inline_mathcodeNP2 (drem, __x, __y, \
"jp 1b" \
: "=t" (__value), "=&a" (__clobbered) : "0" (__x), "u" (__y) : "cc"); \
return __value)
+# endif
/* This function is used in the `isfinite' macro. */
@@ -671,15 +719,15 @@ __NTH (__finite (double __x))
}
/* Miscellaneous functions */
-#ifdef __FAST_MATH__
+# ifdef __FAST_MATH__
__inline_mathcode (__coshm1, __x, \
register long double __exm1 = __expm1l (__fabsl (__x)); \
return 0.5 * (__exm1 / (__exm1 + 1.0)) * __exm1)
__inline_mathcode (__acosh1p, __x, \
- return log1pl (__x + __sqrtl (__x) * __sqrtl (__x + 2.0)))
+ return log1pl (__x + __libc_sqrtl (__x) * __libc_sqrtl (__x + 2.0)))
-#endif /* __FAST_MATH__ */
+# endif /* __FAST_MATH__ */
#endif /* __USE_MISC */
/* Undefine some of the large macros which are not used anymore. */
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-13 01:07:47 +0000