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279 lines
7.6 KiB
C
279 lines
7.6 KiB
C
/* Copyright (C) 1991-2014 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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#include <ctype.h>
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#include <locale.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <string.h>
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#include <math.h>
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struct ltest
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{
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const char *str; /* Convert this. */
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double expect; /* To get this. */
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char left; /* With this left over. */
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int err; /* And this in errno. */
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};
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static const struct ltest tests[] =
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{
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{ "12.345", 12.345, '\0', 0 },
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{ "12.345e19", 12.345e19, '\0', 0 },
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{ "-.1e+9", -.1e+9, '\0', 0 },
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{ ".125", .125, '\0', 0 },
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{ "1e20", 1e20, '\0', 0 },
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{ "0e-19", 0, '\0', 0 },
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{ "4\00012", 4.0, '\0', 0 },
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{ "5.9e-76", 5.9e-76, '\0', 0 },
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{ "0x1.4p+3", 10.0, '\0', 0 },
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{ "0xAp0", 10.0, '\0', 0 },
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{ "0x0Ap0", 10.0, '\0', 0 },
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{ "0x0A", 10.0, '\0', 0 },
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{ "0xA0", 160.0, '\0', 0 },
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{ "0x0.A0p8", 160.0, '\0', 0 },
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{ "0x0.50p9", 160.0, '\0', 0 },
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{ "0x0.28p10", 160.0, '\0', 0 },
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{ "0x0.14p11", 160.0, '\0', 0 },
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{ "0x0.0A0p12", 160.0, '\0', 0 },
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{ "0x0.050p13", 160.0, '\0', 0 },
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{ "0x0.028p14", 160.0, '\0', 0 },
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{ "0x0.014p15", 160.0, '\0', 0 },
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{ "0x00.00A0p16", 160.0, '\0', 0 },
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{ "0x00.0050p17", 160.0, '\0', 0 },
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{ "0x00.0028p18", 160.0, '\0', 0 },
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{ "0x00.0014p19", 160.0, '\0', 0 },
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{ "0x1p-1023",
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1.11253692925360069154511635866620203210960799023116591527666e-308,
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'\0', 0 },
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{ "0x0.8p-1022",
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1.11253692925360069154511635866620203210960799023116591527666e-308,
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'\0', 0 },
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{ "Inf", HUGE_VAL, '\0', 0 },
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{ "-Inf", -HUGE_VAL, '\0', 0 },
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{ "+InFiNiTy", HUGE_VAL, '\0', 0 },
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{ "0x80000Ap-23", 0x80000Ap-23, '\0', 0 },
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{ "1e-324", 0, '\0', ERANGE },
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{ "0x100000000000008p0", 0x1p56, '\0', 0 },
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{ "0x100000000000008.p0", 0x1p56, '\0', 0 },
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{ "0x100000000000008.00p0", 0x1p56, '\0', 0 },
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{ "0x10000000000000800p0", 0x1p64, '\0', 0 },
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{ "0x10000000000000801p0", 0x1.0000000000001p64, '\0', 0 },
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{ NULL, 0, '\0', 0 }
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};
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static void expand (char *dst, int c);
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static int long_dbl (void);
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static int locale_test (void);
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int
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main (int argc, char ** argv)
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{
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char buf[100];
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const struct ltest *lt;
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char *ep;
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int status = 0;
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int save_errno;
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for (lt = tests; lt->str != NULL; ++lt)
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{
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double d;
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errno = 0;
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d = strtod(lt->str, &ep);
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save_errno = errno;
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printf ("strtod (\"%s\") test %u",
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lt->str, (unsigned int) (lt - tests));
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if (d == lt->expect && *ep == lt->left && save_errno == lt->err)
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puts ("\tOK");
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else
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{
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puts ("\tBAD");
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if (d != lt->expect)
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printf (" returns %.60g, expected %.60g\n", d, lt->expect);
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if (lt->left != *ep)
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{
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char exp1[5], exp2[5];
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expand (exp1, *ep);
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expand (exp2, lt->left);
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printf (" leaves '%s', expected '%s'\n", exp1, exp2);
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}
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if (save_errno != lt->err)
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printf (" errno %d (%s) instead of %d (%s)\n",
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save_errno, strerror (save_errno),
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lt->err, strerror (lt->err));
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status = 1;
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}
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}
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sprintf (buf, "%f", strtod ("-0.0", NULL));
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if (strcmp (buf, "-0.000000") != 0)
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{
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printf (" strtod (\"-0.0\", NULL) returns \"%s\"\n", buf);
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status = 1;
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}
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const char input[] = "3752432815e-39";
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float f1 = strtold (input, NULL);
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float f2;
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float f3 = strtof (input, NULL);
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sscanf (input, "%g", &f2);
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if (f1 != f2)
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{
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printf ("f1 = %a != f2 = %a\n", f1, f2);
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status = 1;
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}
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if (f1 != f3)
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{
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printf ("f1 = %a != f3 = %a\n", f1, f3);
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status = 1;
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}
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if (f2 != f3)
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{
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printf ("f2 = %a != f3 = %a\n", f2, f3);
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status = 1;
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}
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const char input2[] = "+1.000000000116415321826934814453125";
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if (strtold (input2, NULL) != +1.000000000116415321826934814453125L)
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{
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printf ("input2: %La != %La\n", strtold (input2, NULL),
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+1.000000000116415321826934814453125L);
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status = 1;
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}
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static struct { const char *str; long double l; } ltests[] =
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{
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{ "42.0000000000000000001", 42.0000000000000000001L },
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{ "42.00000000000000000001", 42.00000000000000000001L },
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{ "42.000000000000000000001", 42.000000000000000000001L }
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};
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int n;
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for (n = 0; n < sizeof (ltests) / sizeof (ltests[0]); ++n)
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if (strtold (ltests[n].str, NULL) != ltests[n].l)
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{
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printf ("ltests[%d]: %La != %La\n", n,
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strtold (ltests[n].str, NULL), ltests[n].l);
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status = 1;
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}
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status |= long_dbl ();
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status |= locale_test ();
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return status ? EXIT_FAILURE : EXIT_SUCCESS;
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}
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static void
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expand (dst, c)
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char *dst;
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int c;
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{
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if (isprint (c))
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{
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dst[0] = c;
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dst[1] = '\0';
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}
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else
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(void) sprintf (dst, "%#.3o", (unsigned int) c);
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}
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static int
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long_dbl (void)
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{
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/* Regenerate this string using
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echo '(2^53-1)*2^(1024-53)' | bc | sed 's/\([^\]*\)\\*$/ "\1"/'
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*/
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static const char longestdbl[] =
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"17976931348623157081452742373170435679807056752584499659891747680315"
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"72607800285387605895586327668781715404589535143824642343213268894641"
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"82768467546703537516986049910576551282076245490090389328944075868508"
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"45513394230458323690322294816580855933212334827479782620414472316873"
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"8177180919299881250404026184124858368";
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double d = strtod (longestdbl, NULL);
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printf ("strtod (\"%s\", NULL) = %g\n", longestdbl, d);
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if (d != 179769313486231570814527423731704356798070567525844996598917476803157260780028538760589558632766878171540458953514382464234321326889464182768467546703537516986049910576551282076245490090389328944075868508455133942304583236903222948165808559332123348274797826204144723168738177180919299881250404026184124858368.000000)
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return 1;
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return 0;
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}
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/* Perform a few tests in a locale with thousands separators. */
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static int
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locale_test (void)
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{
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static const struct
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{
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const char *loc;
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const char *str;
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double exp;
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ptrdiff_t nread;
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} tests[] =
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{
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{ "de_DE.UTF-8", "1,5", 1.5, 3 },
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{ "de_DE.UTF-8", "1.5", 1.0, 1 },
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{ "de_DE.UTF-8", "1.500", 1500.0, 5 },
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{ "de_DE.UTF-8", "36.893.488.147.419.103.232", 0x1.0p65, 26 }
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};
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#define ntests (sizeof (tests) / sizeof (tests[0]))
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size_t n;
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int result = 0;
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puts ("\nLocale tests");
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for (n = 0; n < ntests; ++n)
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{
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double d;
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char *endp;
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if (setlocale (LC_ALL, tests[n].loc) == NULL)
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{
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printf ("cannot set locale %s\n", tests[n].loc);
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result = 1;
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continue;
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}
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/* We call __strtod_interal here instead of strtod to tests the
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handling of grouping. */
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d = __strtod_internal (tests[n].str, &endp, 1);
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if (d != tests[n].exp)
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{
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printf ("strtod(\"%s\") returns %g and not %g\n",
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tests[n].str, d, tests[n].exp);
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result = 1;
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}
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else if (endp - tests[n].str != tests[n].nread)
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{
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printf ("strtod(\"%s\") read %td bytes and not %td\n",
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tests[n].str, endp - tests[n].str, tests[n].nread);
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result = 1;
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}
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}
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if (result == 0)
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puts ("all OK");
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return result;
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}
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