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1eb687d0b8
1998-02-11 19:16 Richard Henderson <rth@cygnus.com> * stdlib/strtod.c (STRTOF): Don't call lshift with zero count. * isomac.c: Move to... * stdlib/isomac.c: ...here. * Makefile: Move rules for handling isomac... * stdlib/Makefile: ...to here.
145 lines
3.5 KiB
C
145 lines
3.5 KiB
C
/* Copyright (C) 1998 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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef _GNU_SOURCE
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# define _GNU_SOURCE 1
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#endif
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#include <math.h>
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#include <stdio.h>
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#include <stdlib.h>
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int error_count;
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typedef struct
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{
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double value;
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int ndigit;
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int decpt;
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char result[30];
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} testcase;
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typedef char * ((*efcvt_func) (double, int, int *, int *));
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static testcase ecvt_tests[] =
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{
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{ 0.0, 0, 1, "" },
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{ 10.0, 0, 2, "" },
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{ 10.0, 1, 2, "1" },
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{ 10.0, 5, 2, "10000" },
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{ -12.0, 5, 2, "12000" },
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{ 0.2, 4, 0, "2000" },
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{ 0.02, 4, -1, "2000" },
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{ 5.5, 1, 1, "6" },
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{ 1.0, -1, 1, "" },
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{ 0.01, 2, -1, "10" },
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{ 100.0, -2, 3, "" },
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{ 100.0, -5, 3, "" },
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{ 100.0, -4, 3, "" },
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{ 100.01, -4, 3, "" },
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{ 123.01, -4, 3, "" },
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{ 126.71, -4, 3, "" },
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/* -1.0 is end marker. */
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{ -1.0, 0, 0, "" }
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};
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static testcase fcvt_tests[] =
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{
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{ 0.0, 0, 1, "0" },
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{ 10.0, 0, 2, "10" },
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{ 10.0, 1, 2, "100" },
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{ 10.0, 4, 2, "100000" },
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{ -12.0, 5, 2, "1200000" },
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{ 0.2, 4, 0, "2000" },
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{ 0.02, 4, -1, "200" },
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{ 5.5, 1, 1, "55" },
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{ 5.5, 0, 1, "6" },
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{ 0.01, 2, -1, "1" },
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{ 100.0, -2, 3, "100" },
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{ 100.0, -5, 3, "100" },
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{ 100.0, -4, 3, "100" },
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{ 100.01, -4, 3, "100" },
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{ 123.01, -4, 3, "100" },
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{ 126.71, -4, 3, "100" },
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/* -1.0 is end marker. */
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{ -1.0, 0, 0, "" }
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};
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void
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output_error (const char *name, double value, int ndigit,
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const char *exp_p, int exp_decpt, int exp_sign,
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char *res_p, int res_decpt, int res_sign)
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{
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printf ("%s returned wrong result for value: %f, ndigits: %d\n",
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name, value, ndigit);
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printf ("Result was p: \"%s\", decpt: %d, sign: %d\n",
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res_p, res_decpt, res_sign);
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printf ("Should be p: \"%s\", decpt: %d, sign: %d\n",
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exp_p, exp_decpt, exp_sign);
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++error_count;
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}
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void
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test (testcase tests[], efcvt_func efcvt, const char *name)
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{
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int no = 0;
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int decpt, sign;
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char *p;
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while (tests[no].value != -1.0)
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{
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p = efcvt (tests[no].value, tests[no].ndigit, &decpt, &sign);
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if (decpt != tests[no].decpt
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|| sign != (tests[no].value < 0)
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|| strcmp (p, tests[no].result) != 0)
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output_error (name, tests[no].value, tests[no].ndigit,
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tests[no].result, tests[no].decpt,
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(tests[no].value < 0),
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p, decpt, sign);
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++no;
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}
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}
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void
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special (void)
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{
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int decpt, sign;
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char *p;
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p = ecvt (NAN, 10, &decpt, &sign);
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if (sign != 0 || strcmp (p, "nan") != 0)
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output_error ("ecvt", NAN, 10, "nan", 0, 0, p, decpt, sign);
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p = ecvt (INFINITY, 10, &decpt, &sign);
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if (sign != 0 || strcmp (p, "inf") != 0)
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output_error ("ecvt", NAN, 10, "inf", 0, 0, p, decpt, sign);
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}
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int
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main (void)
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{
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test (ecvt_tests, ecvt, "ecvt");
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test (fcvt_tests, fcvt, "fcvt");
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special ();
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return error_count;
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}
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