diff options
| -rw-r--r-- | ChangeLog | 5 | ||||
| -rw-r--r-- | benchtests/Makefile | 4 | ||||
| -rw-r--r-- | benchtests/bench-strtod.c | 117 |
3 files changed, 125 insertions, 1 deletions
diff --git a/ChangeLog b/ChangeLog index a35541e0e0..d330b587d6 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,8 @@ +2013-11-11 Adhemerval Zanella <azanella@linux.vnet.ibm.com> + + * benchtests/Makefile: Add bench-strtod. + * benchtests/bench-strtod.c: New file: strtod benchtest + 2013-11-11 Andreas Schwab <schwab@suse.de> [BZ #16153] diff --git a/benchtests/Makefile b/benchtests/Makefile index aec395a814..5eb65e55f4 100644 --- a/benchtests/Makefile +++ b/benchtests/Makefile @@ -32,7 +32,9 @@ string-bench := bcopy bzero memccpy memchr memcmp memcpy memmem memmove \ string-bench-ifunc := $(addsuffix -ifunc, $(string-bench)) string-bench-all := $(string-bench) $(string-bench-ifunc) -benchset := $(string-bench-all) +stdlib-bench := strtod + +benchset := $(string-bench-all) $(stdlib-bench) LDLIBS-bench-acos = -lm LDLIBS-bench-acosh = -lm diff --git a/benchtests/bench-strtod.c b/benchtests/bench-strtod.c new file mode 100644 index 0000000000..3a8a65fadf --- /dev/null +++ b/benchtests/bench-strtod.c @@ -0,0 +1,117 @@ +/* Measure strtod implementation. + Copyright (C) 2013 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, see + <http://www.gnu.org/licenses/>. */ + +#define TEST_MAIN +#define TEST_NAME "strtod" + +#include <stdio.h> +#include <stdlib.h> +#include "bench-timing.h" + +#undef INNER_LOOP_ITERS +#define INNER_LOOP_ITERS 65536 + +static const char *inputs[] = +{ + "1e308", + "100000000e300", + "0x1p1023", + "0x1000p1011", + "0x1p1020", + "0x0.00001p1040" "1e-307", + "0.000001e-301", + "0.0000001e-300", + "0.00000001e-299", + "1000000e-313", + "10000000e-314", + "100000000e-315", + "0x1p-1021", + "0x1000p-1033", + "0x10000p-1037", + "0x0.001p-1009", + "0x0.0001p-1005", + "12.345", + "12.345e19", + "-.1e+9", + ".125", + "1e20", + "0e-19", + "4\00012", + "5.9e-76", + "0x1.4p+3", + "0xAp0", + "0x0Ap0", + "0x0A", + "0xA0", + "0x0.A0p8", + "0x0.50p9", + "0x0.28p10", + "0x0.14p11", + "0x0.0A0p12", + "0x0.050p13", + "0x0.028p14", + "0x0.014p15", + "0x00.00A0p16", + "0x00.0050p17", + "0x00.0028p18", + "0x00.0014p19", + "0x1p-1023", + "0x0.8p-1022", + "Inf", + "-Inf", + "+InFiNiTy", + "0x80000Ap-23", + "1e-324", + "0x100000000000008p0", + "0x100000000000008.p0", + "0x100000000000008.00p0", + "0x10000000000000800p0", + "0x10000000000000801p0", + NULL +}; + +int +do_bench (void) +{ + const size_t iters = INNER_LOOP_ITERS; + timing_t res __attribute__ ((unused)); + + TIMING_INIT (res); + + for (size_t i = 0; inputs[i] != NULL; ++i) + { + char *ep; + timing_t start, stop, cur; + + printf ("Input %-24s:", inputs[i]); + TIMING_NOW (start); + for (size_t j = 0; j < iters; ++j) + strtod (inputs[i], &ep); + TIMING_NOW (stop); + + TIMING_DIFF (cur, start, stop); + TIMING_PRINT_MEAN ((double) cur, (double) iters); + putchar ('\n'); + } + + return 0; +} + +#define TEST_FUNCTION do_bench () + +#include "../test-skeleton.c" |