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authorRichard Henderson <rth@redhat.com>1998-08-23 04:09:49 +0000
committerRichard Henderson <rth@redhat.com>1998-08-23 04:09:49 +0000
commitd7bb0de1781c1729ca07bc826348c825b7daaba2 (patch)
tree99dc635f57f04e846fc157510e15a6cde3760948 /sysdeps/alpha
parent9b1370b85767bc5ff8c71865bcadbf68fda3487a (diff)
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* sysdeps/alpha/fpu/bits/mathinline.h (__floorf, __floor):
Early out for -0. Optimize for !_IEEE_FP_INEXACT. * sysdeps/alpha/fpu/s_floor.c: New. * sysdeps/alpha/fpu/s_floorf.c: New. * sysdeps/alpha/fpu/s_ceil.c: New. * sysdeps/alpha/fpu/s_ceilf.c: New.
Diffstat (limited to 'sysdeps/alpha')
-rw-r--r--sysdeps/alpha/fpu/bits/mathinline.h28
-rw-r--r--sysdeps/alpha/fpu/s_ceil.c58
-rw-r--r--sysdeps/alpha/fpu/s_ceilf.c59
-rw-r--r--sysdeps/alpha/fpu/s_floor.c39
-rw-r--r--sysdeps/alpha/fpu/s_floorf.c35
5 files changed, 209 insertions, 10 deletions
diff --git a/sysdeps/alpha/fpu/bits/mathinline.h b/sysdeps/alpha/fpu/bits/mathinline.h
index 492d9f18a7..681ea70cf9 100644
--- a/sysdeps/alpha/fpu/bits/mathinline.h
+++ b/sysdeps/alpha/fpu/bits/mathinline.h
@@ -75,7 +75,7 @@ __inline_copysign(copysign, double)
#undef __MATH_INLINE_copysign
-#if defined __GNUC__ && (__GNUC__ > 2 || __GNUC__ == 2 && __GNUC_MINOR__ >= 8)
+#if defined __GNUC__ && (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 8))
__MATH_INLINE float __fabsf (float __x) { return __builtin_fabsf (__x); }
__MATH_INLINE float fabsf (float __x) { return __builtin_fabsf (__x); }
__MATH_INLINE double __fabs (double __x) { return __builtin_fabs (__x); }
@@ -106,7 +106,8 @@ __inline_fabs(fabs, double)
__MATH_INLINE float
__floorf (float __x)
{
- if (fabsf (__x) < 16777216.0f) /* 1 << FLT_MANT_DIG */
+ /* Check not zero since floor(-0) == -0. */
+ if (__x != 0 && 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
@@ -116,10 +117,13 @@ __floorf (float __x)
float __tmp1, __tmp2;
__asm ("cvtst/s %3,%2\n\t"
+#ifdef _IEEE_FP_INEXACT
"cvttq/svim %2,%1\n\t"
- "cvtqt/suim %1,%0\n\t"
- "trapb"
- : "=&f"(__x), "=&f"(__tmp1), "=&f"(__tmp2)
+#else
+ "cvttq/svm %2,%1\n\t"
+#endif
+ "cvtqt/m %1,%0\n\t"
+ : "=f"(__x), "=&f"(__tmp1), "=&f"(__tmp2)
: "f"(__x));
}
return __x;
@@ -128,13 +132,17 @@ __floorf (float __x)
__MATH_INLINE double
__floor (double __x)
{
- if (fabs (__x) < 9007199254740992.0) /* 1 << DBL_MANT_DIG */
+ if (__x != 0 && fabs (__x) < 9007199254740992.0) /* 1 << DBL_MANT_DIG */
{
double __tmp1;
- __asm ("cvttq/svim %2,%1\n\t"
- "cvtqt/suim %1,%0\n\t"
- "trapb"
- : "=&f"(__x), "=&f"(__tmp1)
+ __asm (
+#ifdef _IEEE_FP_INEXACT
+ "cvttq/svim %2,%1\n\t"
+#else
+ "cvttq/svm %2,%1\n\t"
+#endif
+ "cvtqt/m %1,%0\n\t"
+ : "=f"(__x), "=&f"(__tmp1)
: "f"(__x));
}
return __x;
diff --git a/sysdeps/alpha/fpu/s_ceil.c b/sysdeps/alpha/fpu/s_ceil.c
new file mode 100644
index 0000000000..23491db5ac
--- /dev/null
+++ b/sysdeps/alpha/fpu/s_ceil.c
@@ -0,0 +1,58 @@
+/* Copyright (C) 1998 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 Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <math.h>
+
+double
+__ceil (double x)
+{
+ if (x != 0 && fabs (x) < 9007199254740992.0) /* 1 << DBL_MANT_DIG */
+ {
+ double tmp1;
+ unsigned long fpcr0, fpcr1;
+ unsigned long pinf = 3UL << 58;
+
+ /* Set round to +inf. */
+ __asm __volatile("excb; mf_fpcr %0" : "=f"(fpcr0));
+ __asm __volatile("mt_fpcr %0; excb" : : "f"(fpcr0 | pinf));
+
+ /* Calculate! */
+#ifdef _IEEE_FP_INEXACT
+ __asm("cvttq/svid %2,%1\n\tcvtqt/suid %1,%0"
+ : "=f"(x), "=&f"(tmp1)
+ : "f"(x));
+#else
+ __asm("cvttq/svd %2,%1\n\tcvtqt/d %1,%0"
+ : "=f"(x), "=&f"(tmp1)
+ : "f"(x));
+#endif
+
+ /* Reset rounding mode, while retaining new exception bits. */
+ __asm __volatile("excb; mf_fpcr %0" : "=f"(fpcr1));
+ fpcr0 = (fpcr0 & pinf) | (fpcr1 & ~pinf);
+ __asm __volatile("mt_fpcr %0; excb" : : "f"(fpcr0));
+ }
+ return x;
+}
+
+weak_alias (__ceil, ceil)
+#ifdef NO_LONG_DOUBLE
+strong_alias (__ceil, __ceill)
+weak_alias (__ceil, ceill)
+#endif
diff --git a/sysdeps/alpha/fpu/s_ceilf.c b/sysdeps/alpha/fpu/s_ceilf.c
new file mode 100644
index 0000000000..3defaeb01e
--- /dev/null
+++ b/sysdeps/alpha/fpu/s_ceilf.c
@@ -0,0 +1,59 @@
+/* Copyright (C) 1998 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 Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <math.h>
+
+float
+__ceilf (float x)
+{
+ if (x != 0 && fabsf (x) < 16777216.0f) /* 1 << FLT_MANT_DIG */
+ {
+ float tmp1, tmp2;
+ unsigned long fpcr0, fpcr1;
+ unsigned long pinf = 3UL << 58;
+
+ /* Set round to +inf. */
+ __asm __volatile("excb; mf_fpcr %0" : "=f"(fpcr0));
+ __asm __volatile("mt_fpcr %0; excb" : : "f"(fpcr0 | pinf));
+
+ /* Calculate!
+ 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. */
+
+#ifdef _IEEE_FP_INEXACT
+ __asm("cvtst/s %3,%2\n\tcvttq/svid %2,%1\n\tcvtqt/suid %1,%0"
+ : "=f"(x), "=&f"(tmp1), "=&f"(tmp2)
+ : "f"(x));
+#else
+ __asm("cvtst/s %3,%2\n\tcvttq/svd %2,%1\n\tcvtqt/d %1,%0"
+ : "=f"(x), "=&f"(tmp1), "=&f"(tmp2)
+ : "f"(x));
+#endif
+
+ /* Reset rounding mode, while retaining new exception bits. */
+ __asm __volatile("excb; mf_fpcr %0" : "=f"(fpcr1));
+ fpcr0 = (fpcr0 & pinf) | (fpcr1 & ~pinf);
+ __asm __volatile("mt_fpcr %0; excb" : : "f"(fpcr0));
+ }
+ return x;
+}
+
+weak_alias (__ceilf, ceilf)
diff --git a/sysdeps/alpha/fpu/s_floor.c b/sysdeps/alpha/fpu/s_floor.c
new file mode 100644
index 0000000000..7b647923e2
--- /dev/null
+++ b/sysdeps/alpha/fpu/s_floor.c
@@ -0,0 +1,39 @@
+/* Copyright (C) 1998 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 Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#ifndef __USE_EXTERN_INLINES
+#define __USE_EXTERN_INLINES
+#endif
+#define __floor __i_floor
+
+#include <math.h>
+
+#undef __floor
+
+double
+__floor (double x)
+{
+ return __i_floor(x);
+}
+
+weak_alias (__floor, floor)
+#ifdef NO_LONG_DOUBLE
+strong_alias (__floor, __floorl)
+weak_alias (__floor, floorl)
+#endif
diff --git a/sysdeps/alpha/fpu/s_floorf.c b/sysdeps/alpha/fpu/s_floorf.c
new file mode 100644
index 0000000000..d25643d19e
--- /dev/null
+++ b/sysdeps/alpha/fpu/s_floorf.c
@@ -0,0 +1,35 @@
+/* Copyright (C) 1998 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 Library General Public License as
+ published by the Free Software Foundation; either version 2 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#ifndef __USE_EXTERN_INLINES
+#define __USE_EXTERN_INLINES
+#endif
+#define __floorf __i_floorf
+
+#include <math.h>
+
+#undef __floorf
+
+float
+__floorf (float x)
+{
+ return __i_floorf(x);
+}
+
+weak_alias (__floorf, floorf)