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Ensure additions are not scheduled after fetestexcept in fmaf and fmal.
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ChangeLog
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ChangeLog
@ -1,3 +1,13 @@
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2012-06-01 Joseph Myers <joseph@codesourcery.com>
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* sysdeps/ieee754/dbl-64/s_fmaf.c (__fmaf): Ensure temp + (double)
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z computation is not scheduled after fetestexcept.
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* sysdeps/ieee754/ldbl-128/s_fmal.c: Include <math_private.h>.
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Use math_force_eval instead of asm to ensure calculation scheduled
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before exception test.
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* sysdeps/ieee754/ldbl-96/s_fmal.c: Include <math_private.h>.
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Ensure a1 + u.d computation is not scheduled after fetestexcept.
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2012-06-01 Aurelien Jarno <aurelien@aurel32.net>
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* sysdeps/ieee754/dbl-64/s_fma.c (__fma): Ensure a1 + u.d
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@ -1,5 +1,5 @@
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/* Compute x * y + z as ternary operation.
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Copyright (C) 2010, 2011 Free Software Foundation, Inc.
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Copyright (C) 2010-2012 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 2010.
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@ -40,6 +40,8 @@ __fmaf (float x, float y, float z)
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/* Perform addition with round to odd. */
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u.d = temp + (double) z;
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/* Ensure the addition is not scheduled after fetestexcept call. */
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math_force_eval (u.d);
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/* Reset rounding mode and test for inexact simultaneously. */
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int j = libc_feupdateenv_test (&env, FE_INEXACT) != 0;
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@ -1,5 +1,5 @@
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/* Compute x * y + z as ternary operation.
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Copyright (C) 2010 Free Software Foundation, Inc.
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Copyright (C) 2010-2012 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 2010.
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@ -21,6 +21,7 @@
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#include <math.h>
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#include <fenv.h>
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#include <ieee754.h>
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#include <math_private.h>
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/* This implementation uses rounding to odd to avoid problems with
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double rounding. See a paper by Boldo and Melquiond:
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@ -175,7 +176,7 @@ __fmal (long double x, long double y, long double z)
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u.ieee.mantissa3 |= fetestexcept (FE_INEXACT) != 0;
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v.d = a1 + u.d;
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/* Ensure the addition is not scheduled after fetestexcept call. */
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asm volatile ("" : : "m" (v));
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math_force_eval (v.d);
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int j = fetestexcept (FE_INEXACT) != 0;
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feupdateenv (&env);
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/* Ensure the following computations are performed in default rounding
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@ -1,5 +1,5 @@
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/* Compute x * y + z as ternary operation.
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Copyright (C) 2010 Free Software Foundation, Inc.
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Copyright (C) 2010-2012 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 2010.
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@ -21,6 +21,7 @@
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#include <math.h>
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#include <fenv.h>
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#include <ieee754.h>
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#include <math_private.h>
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/* This implementation uses rounding to odd to avoid problems with
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double rounding. See a paper by Boldo and Melquiond:
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@ -174,6 +175,8 @@ __fmal (long double x, long double y, long double z)
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if ((u.ieee.mantissa1 & 1) == 0)
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u.ieee.mantissa1 |= fetestexcept (FE_INEXACT) != 0;
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v.d = a1 + u.d;
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/* Ensure the addition is not scheduled after fetestexcept call. */
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math_force_eval (v.d);
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int j = fetestexcept (FE_INEXACT) != 0;
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feupdateenv (&env);
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/* Ensure the following computations are performed in default rounding
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