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alpha: Always handle inexact in rint implementations

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This commit is contained in:
Richard Henderson 2012-06-15 12:17:48 -07:00
parent f56ed78d4a
commit 7fd8e5a4e4
3 changed files with 33 additions and 12 deletions
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30
ChangeLog.alpha
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@ -1,3 +1,33 @@
2012-06-15 Richard Henderson <rth@twiddle.net>
* sysdeps/alpha/fpu/s_rint.c (__rint): Handle inexact regardless
of -mieee-with-inexact.
* sysdeps/alpha/fpu/s_rintf.c (__rintf): Likewise.
[BZ #13848]
* sysdeps/alpha/fpu/s_nearbyint.c (__nearbyint): Fix corner cases
similar to BZ#5350.
* sysdeps/alpha/fpu/s_nearbyintf.c (__nearbyintf): Likewise.
* sysdeps/alpha/fpu/s_copysign.c (__copysign): Use builtin.
* sysdeps/alpha/fpu/s_copysignf.c (__copysignf): Use builtin.
* sysdeps/unix/sysv/linux/alpha/bits/resource.h (RLIMIT_RTTIME): New.
(prlimit, prlimit64): New declarations.
* sysdeps/unix/sysv/linux/alpha/bits/shm.h (SHM_EXEC): New.
* sysdeps/unix/sysv/linux/alpha/bits/stat.h: Use only __USE_ATFILE
to protect UTIME_NOW and UTIME_OMIT.
* sysdeps/alpha/fpu/cfloat-compat.h: Remove __GNUC_PREREQ check.
* sysdeps/alpha/fpu/s_fabs.c (__fabs): Likewise.
* sysdeps/alpha/fpu/s_fabsf.c (__fabsf): Likewise.
* sysdeps/unix/sysv/linux/alpha/sysconf.c (implver): Remove.
(amask): Remove.
(__sysconf): Use builtins directly.
* sysdeps/alpha/bits/mathdef.h (float_t): Define as float
regardless of __GNUC__.
2012-06-06 Richard Henderson <rth@twiddle.net>
* sysdeps/alpha/strncmp.S: Bound count to LONG_MAX at startup.

9
sysdeps/alpha/fpu/s_rint.c
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@ -1,4 +1,4 @@
/* Copyright (C) 2000, 2006, 2007 Free Software Foundation, Inc.
/* Copyright (C) 2000-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Richard Henderson.
@ -26,12 +26,7 @@ __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
__asm ("cvttq/svid %2,%1\n\t"
"cvtqt/d %1,%0\n\t"
: "=f"(new_x), "=&f"(tmp1)
: "f"(x));

6
sysdeps/alpha/fpu/s_rintf.c
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@ -1,4 +1,4 @@
/* Copyright (C) 2000, 2007 Free Software Foundation, Inc.
/* Copyright (C) 2000-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Richard Henderson.
@ -32,11 +32,7 @@ __rintf (float x)
float tmp1, tmp2, new_x;
__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));