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48a18de1e1
Resolves: #15424 The compiler would optimize the benchmark function call out of the loop and call it only once, resulting in blazingly fast times for some benchmarks (notably atan, sin and cos). Mark the inputs as volatile so that the code is forced to read again from the input for each iteration.
45 lines
1.3 KiB
C
45 lines
1.3 KiB
C
/* Copyright (C) 2013 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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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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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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, see
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<http://www.gnu.org/licenses/>. */
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extern double modf (double, double *);
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#define CALL_BENCH_FUNC(j, i) modf (in[j].arg0, &i);
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struct args
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{
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volatile double arg0;
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} in[] =
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{
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{ 42.42 },
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{ -42.42 }
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};
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#define NUM_VARIANTS 1
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#define NUM_SAMPLES(v) (sizeof (in) / sizeof (struct args))
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static volatile double ret = 0.0;
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#define BENCH_FUNC(v, j) \
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({ \
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double iptr; \
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ret = CALL_BENCH_FUNC (j, iptr); \
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})
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#define FUNCNAME "modf"
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#define VARIANT(v) FUNCNAME "()"
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#include "bench-skeleton.c"
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