| /* Copyright (C) 1998-2014 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; |
| } |
| } |
| |
| |
| int |
| main (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; |
| } |