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Diffstat (limited to 'libc/sysdeps/linux/powerpc/bits/mathinline.h')
-rw-r--r--libc/sysdeps/linux/powerpc/bits/mathinline.h125
1 files changed, 103 insertions, 22 deletions
diff --git a/libc/sysdeps/linux/powerpc/bits/mathinline.h b/libc/sysdeps/linux/powerpc/bits/mathinline.h
index 76f68c1a1..87985a744 100644
--- a/libc/sysdeps/linux/powerpc/bits/mathinline.h
+++ b/libc/sysdeps/linux/powerpc/bits/mathinline.h
@@ -1,5 +1,6 @@
/* Inline math functions for powerpc.
- Copyright (C) 1995,1996,1997,1998,1999,2000 Free Software Foundation, Inc.
+ Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2004, 2006
+ Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -17,20 +18,20 @@
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
-#if defined __GNUC__ && !defined _SOFT_FLOAT
-
-#ifdef __USE_ISOC99
-# if __GNUC_PREREQ (2,96)
+#ifndef _MATH_H
+# error "Never use <bits/mathinline.h> directly; include <math.h> instead."
+#endif
-# 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)
+#ifdef __cplusplus
+# define __MATH_INLINE __inline
+#else
+# define __MATH_INLINE extern __inline
+#endif /* __cplusplus */
-# else
+#if defined __GNUC__ && !defined _SOFT_FLOAT
+#ifdef __USE_ISOC99
+# if !__GNUC_PREREQ (2,97)
# define __unordered_cmp(x, y) \
(__extension__ \
({ __typeof__(x) __x = (x); __typeof__(y) __y = (y); \
@@ -39,6 +40,13 @@
: "cr7"); \
__r; }))
+# undef isgreater
+# undef isgreaterequal
+# undef isless
+# undef islessequal
+# undef islessgreater
+# undef isunordered
+
# define isgreater(x, y) (__unordered_cmp (x, y) >> 2 & 1)
# define isgreaterequal(x, y) ((__unordered_cmp (x, y) & 6) != 0)
# define isless(x, y) (__unordered_cmp (x, y) >> 3 & 1)
@@ -47,24 +55,38 @@
# define isunordered(x, y) (__unordered_cmp (x, y) & 1)
# endif /* __GNUC_PREREQ (2,97) */
+
+/* The gcc, version 2.7 or below, has problems with all this inlining
+ code. So disable it for this version of the compiler. */
+# if __GNUC_PREREQ (2, 8)
+/* Test for negative number. Used in the signbit() macro. */
+__MATH_INLINE int
+__NTH (__signbitf (float __x))
+{
+ __extension__ union { float __f; int __i; } __u = { __f: __x };
+ return __u.__i < 0;
+}
+__MATH_INLINE int
+__NTH (__signbit (double __x))
+{
+ __extension__ union { double __d; int __i[2]; } __u = { __d: __x };
+ return __u.__i[0] < 0;
+}
+# endif
#endif /* __USE_ISOC99 */
#if !defined __NO_MATH_INLINES && defined __OPTIMIZE__
-#ifdef __cplusplus
-# define __MATH_INLINE __inline
-#else
-# define __MATH_INLINE extern __inline
-#endif /* __cplusplus */
-
#ifdef __USE_ISOC99
+
+# ifndef __powerpc64__
__MATH_INLINE long int lrint (double __x) __THROW;
__MATH_INLINE long int
__NTH (lrint (double __x))
{
union {
double __d;
- long int __ll[2];
+ int __ll[2];
} __u;
__asm__ ("fctiw %0,%1" : "=f"(__u.__d) : "f"(__x));
return __u.__ll[1];
@@ -76,26 +98,85 @@ __NTH (lrintf (float __x))
{
union {
double __d;
- long int __ll[2];
+ int __ll[2];
} __u;
__asm__ ("fctiw %0,%1" : "=f"(__u.__d) : "f"(__x));
return __u.__ll[1];
}
+# endif
__MATH_INLINE double fdim (double __x, double __y) __THROW;
__MATH_INLINE double
__NTH (fdim (double __x, double __y))
{
- return __x < __y ? 0 : __x - __y;
+ return __x <= __y ? 0 : __x - __y;
}
__MATH_INLINE float fdimf (float __x, float __y) __THROW;
__MATH_INLINE float
__NTH (fdimf (float __x, float __y))
{
- return __x < __y ? 0 : __x - __y;
+ return __x <= __y ? 0 : __x - __y;
}
#endif /* __USE_ISOC99 */
#endif /* !__NO_MATH_INLINES && __OPTIMIZE__ */
+
+/* This code is used internally in the GNU libc. */
+#if 0 /*def __LIBC_INTERNAL_MATH_INLINES*/
+
+#include <sysdep.h>
+#include <ldsodefs.h>
+#include <dl-procinfo.h>
+
+# if __WORDSIZE == 64 || defined _ARCH_PWR4
+# define __CPU_HAS_FSQRT 1
+# else
+# define __CPU_HAS_FSQRT ((GLRO(dl_hwcap) & PPC_FEATURE_64) != 0)
+# endif
+
+extern double __slow_ieee754_sqrt (double);
+__MATH_INLINE double
+__NTH (__ieee754_sqrt (double __x))
+{
+ double __z;
+
+ /* If the CPU is 64-bit we can use the optional FP instructions. */
+ if (__CPU_HAS_FSQRT)
+ {
+ /* Volatile is required to prevent the compiler from moving the
+ fsqrt instruction above the branch. */
+ __asm __volatile (
+ " fsqrt %0,%1\n"
+ : "=f" (__z)
+ : "f" (__x));
+ }
+ else
+ __z = __slow_ieee754_sqrt(__x);
+
+ return __z;
+}
+
+extern float __slow_ieee754_sqrtf (float);
+__MATH_INLINE float
+__NTH (__ieee754_sqrtf (float __x))
+{
+ float __z;
+
+ /* If the CPU is 64-bit we can use the optional FP instructions. */
+ if (__CPU_HAS_FSQRT)
+ {
+ /* Volatile is required to prevent the compiler from moving the
+ fsqrts instruction above the branch. */
+ __asm __volatile (
+ " fsqrts %0,%1\n"
+ : "=f" (__z)
+ : "f" (__x));
+ }
+ else
+ __z = __slow_ieee754_sqrtf(__x);
+
+ return __z;
+}
+#endif /* __LIBC_INTERNAL_MATH_INLINES */
#endif /* __GNUC__ && !_SOFT_FLOAT */