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authorJoakim Tjernlund <joakim.tjernlund@transmode.se>2007-02-12 21:57:57 +0000
committerJoakim Tjernlund <joakim.tjernlund@transmode.se>2007-02-12 21:57:57 +0000
commitdcf241189ab7eb060aeb06caad8b14aa964f6736 (patch)
tree735c06c0036aed160a35e9c0e2870e87fe5730e5 /libc/sysdeps/linux/powerpc/bits/mathinline.h
parent216bfd092c46dc0479e571a37fd2fd96e47605b5 (diff)
Rehash the PowerPC e500 port to avoid creating symlinks
in the powerpc arch code and make more code common with classic PowerPC. From Steve Papacharalambous Lets hope I didn't break something.
Diffstat (limited to 'libc/sysdeps/linux/powerpc/bits/mathinline.h')
-rw-r--r--libc/sysdeps/linux/powerpc/bits/mathinline.h192
1 files changed, 192 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/powerpc/bits/mathinline.h b/libc/sysdeps/linux/powerpc/bits/mathinline.h
new file mode 100644
index 000000000..695cc3fab
--- /dev/null
+++ b/libc/sysdeps/linux/powerpc/bits/mathinline.h
@@ -0,0 +1,192 @@
+/* Inline math functions for powerpc.
+ 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
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#include <features.h>
+
+/*
+ * Disable for e500, uses library functions instead of in lines.
+ */
+#ifndef __CONFIG_E500__
+
+#ifndef _MATH_H
+# error "Never use <bits/mathinline.h> directly; include <math.h> instead."
+#endif
+
+#ifdef __cplusplus
+# define __MATH_INLINE __inline
+#else
+# define __MATH_INLINE extern __inline
+#endif /* __cplusplus */
+
+#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); \
+ unsigned __r; \
+ __asm__("fcmpu 7,%1,%2 ; mfcr %0" : "=r" (__r) : "f" (__x), "f"(__y) \
+ : "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)
+# define islessequal(x, y) ((__unordered_cmp (x, y) & 0xA) != 0)
+# define islessgreater(x, y) ((__unordered_cmp (x, y) & 0xC) != 0)
+# 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 __USE_ISOC99
+
+# ifndef __powerpc64__
+__MATH_INLINE long int lrint (double __x) __THROW;
+__MATH_INLINE long int
+__NTH (lrint (double __x))
+{
+ union {
+ double __d;
+ int __ll[2];
+ } __u;
+ __asm__ ("fctiw %0,%1" : "=f"(__u.__d) : "f"(__x));
+ return __u.__ll[1];
+}
+
+__MATH_INLINE long int lrintf (float __x) __THROW;
+__MATH_INLINE long int
+__NTH (lrintf (float __x))
+{
+ union {
+ double __d;
+ 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;
+}
+
+__MATH_INLINE float fdimf (float __x, float __y) __THROW;
+__MATH_INLINE float
+__NTH (fdimf (float __x, float __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 */
+
+#endif /* __CONFIG_E500__ */
+