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* sysdeps/alpha/fpu/s_ceil.c: Rewrite without branches.
* sysdeps/alpha/fpu/s_ceilf.c: Likewise. * sysdeps/alpha/fpu/s_floor.c: Likewise. * sysdeps/alpha/fpu/s_floorf.c: Likewise. * sysdeps/alpha/fpu/s_rint.c: Likewise. * sysdeps/alpha/fpu/s_rintf.c: Likewise. * sysdeps/alpha/fpu/s_fmax.S: New file. * sysdeps/alpha/fpu/s_fmaxf.S: New file. * sysdeps/alpha/fpu/s_fmin.S: New file. * sysdeps/alpha/fpu/s_fminf.S: New file. * sysdeps/alpha/fpu/s_isnan.c: New file. * sysdeps/alpha/fpu/s_isnanf.c: New file. * sysdeps/alpha/fpu/s_llrint.c: New file. * sysdeps/alpha/fpu/s_llrintf.c: New file. * sysdeps/alpha/fpu/s_lrint.c: New file. * sysdeps/alpha/fpu/s_lrintf.c: New file. * sysdeps/alpha/fpu/s_nearbyint.c: New file. * sysdeps/alpha/fpu/s_nearbyintf.c: New file. * sysdeps/alpha/fpu/bits/mathinline.h (__floorf, __floor): Remove. (__fdimf, fdimf, __fdim, fdim): Remove. (__signbitf, __signbit, __signbitl): Use gcc builtin if available. (__isnanf, __isnan, __isnanl): New.
This commit is contained in:
Richard Henderson
parent
9ea0d86579
commit
bebc49030c
@ -1,5 +1,6 @@
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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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Copyright (C) 1996, 1997, 1999-2001, 2004, 2007
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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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@ -83,111 +84,64 @@ __inline_fabs (fabs, double)
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# undef __inline_fabs
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#endif
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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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__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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float __tmp1, __tmp2;
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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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__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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__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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#ifdef __USE_ISOC99
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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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__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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__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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__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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/* 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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#if !__GNUC_PREREQ (4, 0)
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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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#else
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return __builtin_signbitf (__x);
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#endif
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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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#if !__GNUC_PREREQ (4, 0)
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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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#else
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return __builtin_signbit (__x);
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#endif
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}
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__MATH_INLINE int
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__NTH (__signbitl (long double __x))
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{
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#if !__GNUC_PREREQ (4, 0)
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__extension__ union {
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long double __d;
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long __i[sizeof(long double)/sizeof(long)];
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} __u = { __d: __x };
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return __u.__i[sizeof(long double)/sizeof(long) - 1] < 0;
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#else
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return __builtin_signbitl (__x);
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#endif
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}
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/* Test for NaN. Used in the isnan() macro. */
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__MATH_INLINE int
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__NTH (__isnanf (float __x))
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{
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return isunordered (__x, __x);
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}
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__MATH_INLINE int
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__NTH (__isnan (double __x))
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{
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return isunordered (__x, __x);
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}
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__MATH_INLINE int
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__NTH (__isnanl (long double __x))
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{
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return isunordered (__x, __x);
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}
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#endif /* C99 */
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#endif /* __NO_MATH_INLINES */
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@ -1,4 +1,4 @@
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/* Copyright (C) 1998, 2000, 2006 Free Software Foundation, Inc.
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/* Copyright (C) 1998, 2000, 2006, 2007 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Richard Henderson.
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@ -27,25 +27,20 @@
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double
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__ceil (double x)
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{
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if (isless (fabs (x), 9007199254740992.0)) /* 1 << DBL_MANT_DIG */
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{
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double tmp1, new_x;
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new_x = -x;
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__asm (
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double two52 = copysign (0x1.0p52, x);
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double r, tmp;
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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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"addt/suim %2, %3, %1\n\tsubt/suim %1, %3, %0"
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#else
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"cvttq/svm %2,%1\n\t"
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"addt/sum %2, %3, %1\n\tsubt/sum %1, %3, %0"
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#endif
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"cvtqt/m %1,%0\n\t"
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: "=f"(new_x), "=&f"(tmp1)
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: "f"(new_x));
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: "=&f"(r), "=&f"(tmp)
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: "f"(-x), "f"(-two52));
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/* Fix up the negation we did above, as well as handling -0 properly. */
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x = copysign(new_x, x);
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}
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return x;
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/* Fix up the negation we did above, as well as handling -0 properly. */
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return copysign (r, x);
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}
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weak_alias (__ceil, ceil)
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@ -1,4 +1,4 @@
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/* Copyright (C) 1998, 2000 Free Software Foundation, Inc.
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/* Copyright (C) 1998, 2000, 2007 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Richard Henderson.
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@ -26,30 +26,20 @@
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float
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__ceilf (float x)
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{
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if (isless (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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float tmp1, tmp2, new_x;
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new_x = -x;
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__asm ("cvtst/s %3,%2\n\t"
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float two23 = copysignf (0x1.0p23, x);
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float r, tmp;
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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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"adds/suim %2, %3, %1\n\tsubs/suim %1, %3, %0"
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#else
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"cvttq/svm %2,%1\n\t"
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"adds/sum %2, %3, %1\n\tsubs/sum %1, %3, %0"
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#endif
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"cvtqt/m %1,%0\n\t"
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: "=f"(new_x), "=&f"(tmp1), "=&f"(tmp2)
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: "f"(new_x));
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: "=&f"(r), "=&f"(tmp)
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: "f"(-x), "f"(-two23));
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/* Fix up the negation we did above, as well as handling -0 properly. */
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x = copysignf(new_x, x);
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}
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return x;
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/* Fix up the negation we did above, as well as handling -0 properly. */
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return copysignf (r, x);
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}
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weak_alias (__ceilf, ceilf)
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@ -1,4 +1,4 @@
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/* Copyright (C) 1998, 1999, 2000, 2006 Free Software Foundation, Inc.
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/* Copyright (C) 1998, 1999, 2000, 2006, 2007 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Richard Henderson.
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@ -28,25 +28,21 @@
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double
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__floor (double x)
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{
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if (isless (fabs (x), 9007199254740992.0)) /* 1 << DBL_MANT_DIG */
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{
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double tmp1, new_x;
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__asm (
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double two52 = copysign (0x1.0p52, x);
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double r, tmp;
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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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"addt/suim %2, %3, %1\n\tsubt/suim %1, %3, %0"
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#else
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"cvttq/svm %2,%1\n\t"
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"addt/sum %2, %3, %1\n\tsubt/sum %1, %3, %0"
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#endif
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"cvtqt/m %1,%0\n\t"
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: "=f"(new_x), "=&f"(tmp1)
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: "f"(x));
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: "=&f"(r), "=&f"(tmp)
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: "f"(x), "f"(two52));
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/* floor(-0) == -0, and in general we'll always have the same
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sign as our input. */
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x = copysign(new_x, x);
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}
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return x;
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/* floor(-0) == -0, and in general we'll always have the same
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sign as our input. */
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return copysign (r, x);
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}
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weak_alias (__floor, floor)
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@ -1,4 +1,4 @@
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/* Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
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/* Copyright (C) 1998, 1999, 2000, 2007 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Richard Henderson.
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@ -27,30 +27,21 @@
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float
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__floorf (float x)
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{
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if (isless (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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float tmp1, tmp2, new_x;
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__asm ("cvtst/s %3,%2\n\t"
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float two23 = copysignf (0x1.0p23, x);
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float r, tmp;
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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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"adds/suim %2, %3, %1\n\tsubs/suim %1, %3, %0"
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#else
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"cvttq/svm %2,%1\n\t"
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"adds/sum %2, %3, %1\n\tsubs/sum %1, %3, %0"
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#endif
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"cvtqt/m %1,%0\n\t"
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: "=f"(new_x), "=&f"(tmp1), "=&f"(tmp2)
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: "f"(x));
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: "=&f"(r), "=&f"(tmp)
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: "f"(x), "f"(two23));
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/* floor(-0) == -0, and in general we'll always have the same
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sign as our input. */
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x = copysignf(new_x, x);
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}
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return x;
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/* floor(-0) == -0, and in general we'll always have the same
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sign as our input. */
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return copysignf (r, x);
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}
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weak_alias (__floorf, floorf)
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58
sysdeps/alpha/fpu/s_fmax.S
Normal file
58
sysdeps/alpha/fpu/s_fmax.S
Normal file
@ -0,0 +1,58 @@
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/* Copyright (C) 2007 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Richard Henderson.
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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
|
||||
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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#include <sysdep.h>
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#include <math_ldbl_opt.h>
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.set noat
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.set noreorder
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.text
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ENTRY (__fmax)
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.prologue 0
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cmptun/su $f16, $f16, $f10
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cmptun/su $f17, $f17, $f11
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fmov $f17, $f0
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unop
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trapb
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fbne $f10, $ret
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fmov $f16, $f0
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fbne $f11, $ret
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cmptlt/su $f16, $f17, $f11
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trapb
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fcmovne $f11, $f17, $f0
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$ret: ret
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|
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END (__fmax)
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|
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/* Given the in-register format of single-precision, this works there too. */
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strong_alias (__fmax, __fmaxf)
|
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weak_alias (__fmaxf, fmaxf)
|
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|
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weak_alias (__fmax, fmax)
|
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#ifdef NO_LONG_DOUBLE
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strong_alias (__fmax, __fmaxl)
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weak_alias (__fmaxl, fmaxl)
|
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#endif
|
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#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)
|
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compat_symbol (libm, __fmax, fmaxl, GLIBC_2_0);
|
||||
#endif
|
||||
1
sysdeps/alpha/fpu/s_fmaxf.S
Normal file
1
sysdeps/alpha/fpu/s_fmaxf.S
Normal file
@ -0,0 +1 @@
|
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/* __fmaxf is in s_fmax.c */
|
||||
58
sysdeps/alpha/fpu/s_fmin.S
Normal file
58
sysdeps/alpha/fpu/s_fmin.S
Normal file
@ -0,0 +1,58 @@
|
||||
/* Copyright (C) 2007 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Richard Henderson.
|
||||
|
||||
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 <sysdep.h>
|
||||
#include <math_ldbl_opt.h>
|
||||
|
||||
.set noat
|
||||
.set noreorder
|
||||
|
||||
.text
|
||||
ENTRY (__fmin)
|
||||
.prologue 0
|
||||
|
||||
cmptun/su $f16, $f16, $f10
|
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cmptun/su $f17, $f17, $f11
|
||||
fmov $f17, $f0
|
||||
unop
|
||||
|
||||
trapb
|
||||
fbne $f10, $ret
|
||||
fmov $f16, $f0
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||||
fbne $f11, $ret
|
||||
|
||||
cmptlt/su $f17, $f16, $f11
|
||||
trapb
|
||||
fcmovne $f11, $f17, $f0
|
||||
$ret: ret
|
||||
|
||||
END (__fmin)
|
||||
|
||||
/* Given the in-register format of single-precision, this works there too. */
|
||||
strong_alias (__fmin, __fminf)
|
||||
weak_alias (__fminf, fminf)
|
||||
|
||||
weak_alias (__fmin, fmin)
|
||||
#ifdef NO_LONG_DOUBLE
|
||||
strong_alias (__fmin, __fminl)
|
||||
weak_alias (__fminl, fminl)
|
||||
#endif
|
||||
#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)
|
||||
compat_symbol (libm, __fmin, fminl, GLIBC_2_0);
|
||||
#endif
|
||||
1
sysdeps/alpha/fpu/s_fminf.S
Normal file
1
sysdeps/alpha/fpu/s_fminf.S
Normal file
@ -0,0 +1 @@
|
||||
/* __fminf is in s_fmin.c */
|
||||
58
sysdeps/alpha/fpu/s_isnan.c
Normal file
58
sysdeps/alpha/fpu/s_isnan.c
Normal file
@ -0,0 +1,58 @@
|
||||
/* Return 1 if argument is a NaN, else 0.
|
||||
Copyright (C) 2007 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. */
|
||||
|
||||
/* Ugly kludge to avoid declarations. */
|
||||
#define __isnanf not___isnanf
|
||||
#define isnanf not_isnanf
|
||||
#define __GI___isnanf not__GI___isnanf
|
||||
|
||||
#include <math.h>
|
||||
#include <math_ldbl_opt.h>
|
||||
|
||||
#undef __isnanf
|
||||
#undef isnanf
|
||||
#undef __GI___isnanf
|
||||
|
||||
/* The hidden_proto in include/math.h was obscured by the macro hackery. */
|
||||
__typeof (__isnan) __isnanf;
|
||||
hidden_proto (__isnanf)
|
||||
|
||||
|
||||
int
|
||||
__isnan (double x)
|
||||
{
|
||||
return isunordered (x, x);
|
||||
}
|
||||
|
||||
hidden_def (__isnan)
|
||||
weak_alias (__isnan, isnan)
|
||||
|
||||
/* It turns out that the 'double' version will also always work for
|
||||
single-precision. */
|
||||
strong_alias (__isnan, __isnanf)
|
||||
hidden_def (__isnanf)
|
||||
weak_alias (__isnanf, isnanf)
|
||||
|
||||
#ifdef NO_LONG_DOUBLE
|
||||
strong_alias (__isnan, __isnanl)
|
||||
weak_alias (__isnan, isnanl)
|
||||
#endif
|
||||
#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)
|
||||
compat_symbol (libm, __isnan, isnanl, GLIBC_2_0);
|
||||
#endif
|
||||
1
sysdeps/alpha/fpu/s_isnanf.c
Normal file
1
sysdeps/alpha/fpu/s_isnanf.c
Normal file
@ -0,0 +1 @@
|
||||
/* In s_isnan.c */
|
||||
1
sysdeps/alpha/fpu/s_llrint.c
Normal file
1
sysdeps/alpha/fpu/s_llrint.c
Normal file
@ -0,0 +1 @@
|
||||
/* In s_lrint.c */
|
||||
1
sysdeps/alpha/fpu/s_llrintf.c
Normal file
1
sysdeps/alpha/fpu/s_llrintf.c
Normal file
@ -0,0 +1 @@
|
||||
/* In s_lrintf.c */
|
||||
48
sysdeps/alpha/fpu/s_lrint.c
Normal file
48
sysdeps/alpha/fpu/s_lrint.c
Normal file
@ -0,0 +1,48 @@
|
||||
/* Copyright (C) 2007 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. */
|
||||
|
||||
#define __llrint not___llrint
|
||||
#define llrint not_llrint
|
||||
#include <math.h>
|
||||
#include <math_ldbl_opt.h>
|
||||
#undef __llrint
|
||||
#undef llrint
|
||||
|
||||
long int
|
||||
__lrint (double x)
|
||||
{
|
||||
long ret;
|
||||
|
||||
__asm ("cvttq/svd %1,%0" : "=&f"(ret) : "f"(x));
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
strong_alias (__lrint, __llrint)
|
||||
weak_alias (__lrint, lrint)
|
||||
weak_alias (__llrint, llrint)
|
||||
#ifdef NO_LONG_DOUBLE
|
||||
strong_alias (__lrint, __lrintl)
|
||||
strong_alias (__lrint, __llrintl)
|
||||
weak_alias (__lrintl, lrintl)
|
||||
weak_alias (__llrintl, llrintl)
|
||||
#endif
|
||||
#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)
|
||||
compat_symbol (libm, __lrint, lrintl, GLIBC_2_0);
|
||||
compat_symbol (libm, __llrint, llrintl, GLIBC_2_0);
|
||||
#endif
|
||||
39
sysdeps/alpha/fpu/s_lrintf.c
Normal file
39
sysdeps/alpha/fpu/s_lrintf.c
Normal file
@ -0,0 +1,39 @@
|
||||
/* Copyright (C) 2007 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. */
|
||||
|
||||
#define __llrintf not___llrintf
|
||||
#define llrintf not_llrintf
|
||||
#include <math.h>
|
||||
#undef __llrintf
|
||||
#undef llrintf
|
||||
|
||||
long int
|
||||
__lrintf (float x)
|
||||
{
|
||||
double tmp;
|
||||
long ret;
|
||||
|
||||
__asm ("cvtst/s %2,%1\n\tcvttq/svd %1,%0"
|
||||
: "=&f"(ret), "=&f"(tmp) : "f"(x));
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
strong_alias (__lrintf, __llrintf)
|
||||
weak_alias (__lrintf, lrintf)
|
||||
weak_alias (__llrintf, llrintf)
|
||||
48
sysdeps/alpha/fpu/s_nearbyint.c
Normal file
48
sysdeps/alpha/fpu/s_nearbyint.c
Normal file
@ -0,0 +1,48 @@
|
||||
/* Copyright (C) 2007 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Richard Henderson.
|
||||
|
||||
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 <math.h>
|
||||
#include <math_ldbl_opt.h>
|
||||
|
||||
#ifdef _IEEE_FP_INEXACT
|
||||
#error "Don't compile with -mieee-with-inexact"
|
||||
#endif
|
||||
|
||||
double
|
||||
__nearbyint (double x)
|
||||
{
|
||||
double two52 = copysign (0x1.0p52, x);
|
||||
double r;
|
||||
|
||||
r = x + two52;
|
||||
r = r - two52;
|
||||
|
||||
/* nearbyint(-0.1) == -0, and in general we'll always have the same sign
|
||||
as our input. */
|
||||
return copysign (r, x);
|
||||
}
|
||||
|
||||
weak_alias (__nearbyint, nearbyint)
|
||||
#ifdef NO_LONG_DOUBLE
|
||||
strong_alias (__nearbyint, __nearbyintl)
|
||||
weak_alias (__nearbyint, nearbyintl)
|
||||
#endif
|
||||
#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)
|
||||
compat_symbol (libm, __nearbyint, nearbyintl, GLIBC_2_0);
|
||||
#endif
|
||||
40
sysdeps/alpha/fpu/s_nearbyintf.c
Normal file
40
sysdeps/alpha/fpu/s_nearbyintf.c
Normal file
@ -0,0 +1,40 @@
|
||||
/* Copyright (C) 2007 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Richard Henderson.
|
||||
|
||||
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 <math.h>
|
||||
|
||||
#ifdef _IEEE_FP_INEXACT
|
||||
#error "Don't compile with -mieee-with-inexact"
|
||||
#endif
|
||||
|
||||
float
|
||||
__nearbyintf (float x)
|
||||
{
|
||||
float two23 = copysignf (0x1.0p23, x);
|
||||
float r;
|
||||
|
||||
r = x + two23;
|
||||
r = r - two23;
|
||||
|
||||
/* nearbyint(-0.1) == -0, and in general we'll always have the same sign
|
||||
as our input. */
|
||||
return copysign (r, x);
|
||||
}
|
||||
|
||||
weak_alias (__nearbyintf, nearbyintf)
|
||||
@ -1,4 +1,4 @@
|
||||
/* Copyright (C) 2000, 2006 Free Software Foundation, Inc.
|
||||
/* Copyright (C) 2000, 2006, 2007 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Richard Henderson.
|
||||
|
||||
@ -24,24 +24,15 @@
|
||||
double
|
||||
__rint (double x)
|
||||
{
|
||||
if (isless (fabs (x), 9007199254740992.0)) /* 1 << DBL_MANT_DIG */
|
||||
{
|
||||
double tmp1, new_x;
|
||||
__asm (
|
||||
#ifdef _IEEE_FP_INEXACT
|
||||
"cvttq/svid %2,%1\n\t"
|
||||
#else
|
||||
"cvttq/svd %2,%1\n\t"
|
||||
#endif
|
||||
"cvtqt/d %1,%0\n\t"
|
||||
: "=f"(new_x), "=&f"(tmp1)
|
||||
: "f"(x));
|
||||
double two52 = copysign (0x1.0p52, x);
|
||||
double r;
|
||||
|
||||
r = x + two52;
|
||||
r = r - two52;
|
||||
|
||||
/* rint(-0.1) == -0, and in general we'll always have the same
|
||||
sign as our input. */
|
||||
x = copysign(new_x, x);
|
||||
}
|
||||
return x;
|
||||
/* rint(-0.1) == -0, and in general we'll always have the same sign
|
||||
as our input. */
|
||||
return copysign (r, x);
|
||||
}
|
||||
|
||||
weak_alias (__rint, rint)
|
||||
|
||||
@ -1,4 +1,4 @@
|
||||
/* Copyright (C) 2000 Free Software Foundation, Inc.
|
||||
/* Copyright (C) 2000, 2007 Free Software Foundation, Inc.
|
||||
This file is part of the GNU C Library.
|
||||
Contributed by Richard Henderson.
|
||||
|
||||
@ -23,30 +23,15 @@
|
||||
float
|
||||
__rintf (float x)
|
||||
{
|
||||
if (isless (fabsf (x), 16777216.0f)) /* 1 << FLT_MANT_DIG */
|
||||
{
|
||||
/* Note that Alpha S_Floating is stored in registers in a
|
||||
restricted T_Floating format, so we don't even need to
|
||||
convert back to S_Floating in the end. The initial
|
||||
conversion to T_Floating is needed to handle denormals. */
|
||||
float two23 = copysignf (0x1.0p23, x);
|
||||
float r;
|
||||
|
||||
float tmp1, tmp2, new_x;
|
||||
r = x + two23;
|
||||
r = r - two23;
|
||||
|
||||
__asm ("cvtst/s %3,%2\n\t"
|
||||
#ifdef _IEEE_FP_INEXACT
|
||||
"cvttq/svid %2,%1\n\t"
|
||||
#else
|
||||
"cvttq/svd %2,%1\n\t"
|
||||
#endif
|
||||
"cvtqt/d %1,%0\n\t"
|
||||
: "=f"(new_x), "=&f"(tmp1), "=&f"(tmp2)
|
||||
: "f"(x));
|
||||
|
||||
/* rint(-0.1) == -0, and in general we'll always have the same
|
||||
sign as our input. */
|
||||
x = copysignf(new_x, x);
|
||||
}
|
||||
return x;
|
||||
/* rint(-0.1) == -0, and in general we'll always have the same sign
|
||||
as our input. */
|
||||
return copysign (r, x);
|
||||
}
|
||||
|
||||
weak_alias (__rintf, rintf)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user