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+/* Inline math functions for Alpha.
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+ Copyright (C) 1996, 1997, 1999-2001, 2004 Free Software Foundation, Inc.
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+ This file is part of the GNU C Library.
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+ Contributed by David Mosberger-Tang.
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+
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+ The GNU C Library is free software; you can redistribute it and/or
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+ modify it under the terms of the GNU Lesser General Public
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+ License as published by the Free Software Foundation; either
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+ version 2.1 of the License, or (at your option) any later version.
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+
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+ The GNU C Library is distributed in the hope that it will be useful,
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+ but WITHOUT ANY WARRANTY; without even the implied warranty of
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+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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+ Lesser General Public License for more details.
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+
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+ You should have received a copy of the GNU Lesser General Public
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+ License along with the GNU C Library; if not, write to the Free
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+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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+ 02111-1307 USA. */
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+
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+#ifndef _MATH_H
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+# error "Never use <bits/mathinline.h> directly; include <math.h> instead."
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+#endif
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+
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+#ifdef __cplusplus
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+# define __MATH_INLINE __inline
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+#else
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+# define __MATH_INLINE extern __inline
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+#endif
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+
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+#if defined __USE_ISOC99 && defined __GNUC__ && !__GNUC_PREREQ(3,0)
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+# undef isgreater
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+# undef isgreaterequal
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+# undef isless
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+# undef islessequal
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+# undef islessgreater
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+# undef isunordered
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+# define isunordered(u, v) \
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+ (__extension__ \
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+ ({ double __r, __u = (u), __v = (v); \
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+ __asm ("cmptun/su %1,%2,%0\n\ttrapb" \
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+ : "=&f" (__r) : "f" (__u), "f"(__v)); \
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+ __r != 0; }))
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+#endif /* ISO C99 */
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+
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+#if (!defined __NO_MATH_INLINES || defined __LIBC_INTERNAL_MATH_INLINES) \
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+ && defined __OPTIMIZE__
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+
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+#if !__GNUC_PREREQ (4, 0)
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+# define __inline_copysign(NAME, TYPE) \
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+__MATH_INLINE TYPE \
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+__NTH (NAME (TYPE __x, TYPE __y)) \
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+{ \
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+ TYPE __z; \
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+ __asm ("cpys %1, %2, %0" : "=f" (__z) : "f" (__y), "f" (__x)); \
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+ return __z; \
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+}
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+
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+__inline_copysign (__copysignf, float)
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+__inline_copysign (copysignf, float)
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+__inline_copysign (__copysign, double)
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+__inline_copysign (copysign, double)
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+
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+# undef __inline_copysign
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+#endif
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+
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+
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+#if !__GNUC_PREREQ (2, 8)
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+# define __inline_fabs(NAME, TYPE) \
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+__MATH_INLINE TYPE \
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+__NTH (NAME (TYPE __x)) \
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+{ \
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+ TYPE __z; \
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+ __asm ("cpys $f31, %1, %0" : "=f" (__z) : "f" (__x)); \
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+ return __z; \
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+}
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+
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+__inline_fabs (__fabsf, float)
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+__inline_fabs (fabsf, float)
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+__inline_fabs (__fabs, double)
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+__inline_fabs (fabs, double)
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+
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+# undef __inline_fabs
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+#endif
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+
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+
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+/* Use the -inf rounding mode conversion instructions to implement
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+ floor. We note when the exponent is large enough that the value
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+ must be integral, as this avoids unpleasant integer overflows. */
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+
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+__MATH_INLINE float
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+__NTH (__floorf (float __x))
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+{
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+ /* Check not zero since floor(-0) == -0. */
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+ if (__x != 0 && fabsf (__x) < 16777216.0f) /* 1 << FLT_MANT_DIG */
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+ {
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+ /* Note that Alpha S_Floating is stored in registers in a
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+ restricted T_Floating format, so we don't even need to
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+ convert back to S_Floating in the end. The initial
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+ conversion to T_Floating is needed to handle denormals. */
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+
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+ float __tmp1, __tmp2;
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+
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+ __asm ("cvtst/s %3,%2\n\t"
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+#ifdef _IEEE_FP_INEXACT
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+ "cvttq/svim %2,%1\n\t"
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+#else
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+ "cvttq/svm %2,%1\n\t"
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+#endif
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+ "cvtqt/m %1,%0\n\t"
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+ : "=f"(__x), "=&f"(__tmp1), "=&f"(__tmp2)
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+ : "f"(__x));
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+ }
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+ return __x;
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+}
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+
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+__MATH_INLINE double
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+__NTH (__floor (double __x))
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+{
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+ if (__x != 0 && fabs (__x) < 9007199254740992.0) /* 1 << DBL_MANT_DIG */
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+ {
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+ double __tmp1;
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+ __asm (
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+#ifdef _IEEE_FP_INEXACT
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+ "cvttq/svim %2,%1\n\t"
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+#else
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+ "cvttq/svm %2,%1\n\t"
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+#endif
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+ "cvtqt/m %1,%0\n\t"
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+ : "=f"(__x), "=&f"(__tmp1)
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+ : "f"(__x));
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+ }
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+ return __x;
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+}
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+
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+__MATH_INLINE float __NTH (floorf (float __x)) { return __floorf(__x); }
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+__MATH_INLINE double __NTH (floor (double __x)) { return __floor(__x); }
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+
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+
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+#ifdef __USE_ISOC99
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+
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+__MATH_INLINE float
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+__NTH (__fdimf (float __x, float __y))
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+{
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+ return __x <= __y ? 0.0f : __x - __y;
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+}
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+
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+__MATH_INLINE float
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+__NTH (fdimf (float __x, float __y))
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+{
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+ return __x <= __y ? 0.0f : __x - __y;
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+}
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+
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+__MATH_INLINE double
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+__NTH (__fdim (double __x, double __y))
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+{
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+ return __x <= __y ? 0.0 : __x - __y;
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+}
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+
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+__MATH_INLINE double
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+__NTH (fdim (double __x, double __y))
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+{
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+ return __x <= __y ? 0.0 : __x - __y;
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+}
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+
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+/* Test for negative number. Used in the signbit() macro. */
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+__MATH_INLINE int
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+__NTH (__signbitf (float __x))
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+{
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+ __extension__ union { float __f; int __i; } __u = { __f: __x };
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+ return __u.__i < 0;
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+}
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+
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+__MATH_INLINE int
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+__NTH (__signbit (double __x))
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+{
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+ __extension__ union { double __d; long __i; } __u = { __d: __x };
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+ return __u.__i < 0;
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+}
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+
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+#endif /* C99 */
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+
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+#endif /* __NO_MATH_INLINES */
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