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Diffstat (limited to 'REORG.TODO/misc/tst-efgcvt.c')
| -rw-r--r-- | REORG.TODO/misc/tst-efgcvt.c | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/REORG.TODO/misc/tst-efgcvt.c b/REORG.TODO/misc/tst-efgcvt.c new file mode 100644 index 0000000000..4459f6248a --- /dev/null +++ b/REORG.TODO/misc/tst-efgcvt.c @@ -0,0 +1,216 @@ +/* Copyright (C) 1998-2017 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/>. */ + +#ifndef _GNU_SOURCE +# define _GNU_SOURCE 1 +#endif + +#include <float.h> +#include <math.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +int error_count; + +typedef struct +{ + double value; + int ndigit; + int decpt; + char result[30]; +} testcase; + +typedef char * ((*efcvt_func) (double, int, int *, int *)); + +typedef int ((*efcvt_r_func) (double, int, int *, int *, char *, size_t)); + + +static testcase ecvt_tests[] = +{ + { 0.0, 0, 1, "" }, + { 10.0, 0, 2, "" }, + { 10.0, 1, 2, "1" }, + { 10.0, 5, 2, "10000" }, + { -12.0, 5, 2, "12000" }, + { 0.2, 4, 0, "2000" }, + { 0.02, 4, -1, "2000" }, + { 5.5, 1, 1, "6" }, + { 1.0, -1, 1, "" }, + { 0.01, 2, -1, "10" }, + { 100.0, -2, 3, "" }, + { 100.0, -5, 3, "" }, + { 100.0, -4, 3, "" }, + { 100.01, -4, 3, "" }, + { 123.01, -4, 3, "" }, + { 126.71, -4, 3, "" }, + { 0.0, 4, 1, "0000" }, +#if DBL_MANT_DIG == 53 + { 0x1p-1074, 3, -323, "494" }, + { -0x1p-1074, 3, -323, "494" }, +#endif + /* -1.0 is end marker. */ + { -1.0, 0, 0, "" } +}; + +static testcase fcvt_tests[] = +{ + { 0.0, 0, 1, "0" }, + { 10.0, 0, 2, "10" }, + { 10.0, 1, 2, "100" }, + { 10.0, 4, 2, "100000" }, + { -12.0, 5, 2, "1200000" }, + { 0.2, 4, 0, "2000" }, + { 0.02, 4, -1, "200" }, + { 5.5, 1, 1, "55" }, + { 5.5, 0, 1, "6" }, + { 0.01, 2, -1, "1" }, + { 100.0, -2, 3, "100" }, + { 100.0, -5, 3, "100" }, + { 100.0, -4, 3, "100" }, + { 100.01, -4, 3, "100" }, + { 123.01, -4, 3, "100" }, + { 126.71, -4, 3, "100" }, + { 322.5, 16, 3, "3225000000000000000" }, + /* -1.0 is end marker. */ + { -1.0, 0, 0, "" } +}; + +static void +output_error (const char *name, double value, int ndigit, + const char *exp_p, int exp_decpt, int exp_sign, + char *res_p, int res_decpt, int res_sign) +{ + printf ("%s returned wrong result for value: %f, ndigits: %d\n", + name, value, ndigit); + printf ("Result was p: \"%s\", decpt: %d, sign: %d\n", + res_p, res_decpt, res_sign); + printf ("Should be p: \"%s\", decpt: %d, sign: %d\n", + exp_p, exp_decpt, exp_sign); + ++error_count; +} + + +static void +output_r_error (const char *name, double value, int ndigit, + const char *exp_p, int exp_decpt, int exp_sign, int exp_return, + char *res_p, int res_decpt, int res_sign, int res_return) +{ + printf ("%s returned wrong result for value: %f, ndigits: %d\n", + name, value, ndigit); + printf ("Result was buf: \"%s\", decpt: %d, sign: %d return value: %d\n", + res_p, res_decpt, res_sign, res_return); + printf ("Should be buf: \"%s\", decpt: %d, sign: %d\n", + exp_p, exp_decpt, exp_sign); + ++error_count; +} + +static void +test (testcase tests[], efcvt_func efcvt, const char *name) +{ + int no = 0; + int decpt, sign; + char *p; + + while (tests[no].value != -1.0) + { + p = efcvt (tests[no].value, tests[no].ndigit, &decpt, &sign); + if (decpt != tests[no].decpt + || sign != (tests[no].value < 0) + || strcmp (p, tests[no].result) != 0) + output_error (name, tests[no].value, tests[no].ndigit, + tests[no].result, tests[no].decpt, + (tests[no].value < 0), + p, decpt, sign); + ++no; + } +} + +static void +test_r (testcase tests[], efcvt_r_func efcvt_r, const char *name) +{ + int no = 0; + int decpt, sign, res; + char buf [1024]; + + + while (tests[no].value != -1.0) + { + res = efcvt_r (tests[no].value, tests[no].ndigit, &decpt, &sign, + buf, sizeof (buf)); + if (res != 0 + || decpt != tests[no].decpt + || sign != (tests[no].value < 0) + || strcmp (buf, tests[no].result) != 0) + output_r_error (name, tests[no].value, tests[no].ndigit, + tests[no].result, tests[no].decpt, 0, + (tests[no].value < 0), + buf, decpt, sign, res); + ++no; + } +} + +static void +special (void) +{ + int decpt, sign, res; + char *p; + char buf [1024]; + + p = ecvt (NAN, 10, &decpt, &sign); + if (sign != 0 || strcmp (p, "nan") != 0) + output_error ("ecvt", NAN, 10, "nan", 0, 0, p, decpt, sign); + + p = ecvt (INFINITY, 10, &decpt, &sign); + if (sign != 0 || strcmp (p, "inf") != 0) + output_error ("ecvt", INFINITY, 10, "inf", 0, 0, p, decpt, sign); + + /* Simply make sure these calls with large NDIGITs don't crash. */ + (void) ecvt (123.456, 10000, &decpt, &sign); + (void) fcvt (123.456, 10000, &decpt, &sign); + + /* Some tests for the reentrant functions. */ + /* Use a too small buffer. */ + res = ecvt_r (123.456, 10, &decpt, &sign, buf, 1); + if (res == 0) + { + printf ("ecvt_r with a too small buffer was succesful.\n"); + ++error_count; + } + res = fcvt_r (123.456, 10, &decpt, &sign, buf, 1); + if (res == 0) + { + printf ("fcvt_r with a too small buffer was succesful.\n"); + ++error_count; + } +} + + +static int +do_test (void) +{ + test (ecvt_tests, ecvt, "ecvt"); + test (fcvt_tests, fcvt, "fcvt"); + test_r (ecvt_tests, ecvt_r, "ecvt_r"); + test_r (fcvt_tests, fcvt_r, "fcvt_r"); + special (); + + return error_count; +} + +#define TEST_FUNCTION do_test () +#include "../test-skeleton.c" |