/*
* Copyright (c) 2012 Adam Hraska
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* - The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <stdio.h>
#include "../tester.h"
#include <str.h>
const char *test_print6(void)
{
struct {
double val;
const char *fmt;
const char *exp_str;
const char *warn_str;
} pat[] = {
/*
* Generic
*/
{ 2.0, "%g", "2", 0 },
{ 0, "%g", "0", 0 },
{ 0.1, "%g", "0.1", 0 },
{ 9e59, "%g", "9e+59", 0 },
{ -9e-59, "%g", "-9e-59", 0 },
{ 1e307, "%g", "1e+307", 0 },
{ 0.09999999999999999, "%g", "9.999999999999999e-02", 0 },
{ 0.099999999999999999, "%g", "0.1", 0 },
/*
* gcc and msvc convert "3.4567e-317" to different binary
* doubles.
*/
{ 3.4567e-317, "%g", "3.4567e-317", "3.456998e-317" },
{ 3.4567e-318, "%g", "3.4567e-318", 0 },
{ 123456789012345.0, "%g", "123456789012345", 0 },
{ -123456789012345.0, "%g", "-123456789012345", 0 },
/* Special */
{ 1e300 * 1e300, "%g", "inf", 0 },
{ -1.0 / (1e300 * 1e300), "%g", "-0", 0 },
{ 1234567.8901, "%g", "1234567.8901", 0 },
{ 1234567.80012, "%g", "1234567.80012", 0 },
{ 112e-32, "%g", "1.12e-30", 0 },
{ 10.0e45, "%g", "1e+46", 0 },
/* rounding w/ trailing zero removal */
{ 0.01, "%10.6g", " 0.01", 0 },
{ 9.495, "%10.2g", " 9.5", 0 },
{ 9.495e30, "%10.2g", " 9.5e+30", 0 },
{ 9.495e30, "%10g", " 9.495e+30", 0 },
{ 9.495e30, "%10.6g", " 9.495e+30", 0 },
/*
* Scientific
*/
{ 1e05, "%e", "1.000000e+05", 0 },
/* full padding */
/* __PRINTF_FLAG_SHOWPLUS | __PRINTF_FLAG_ZEROPADDED */
{ 1e-1, "%+010.3e", "+1.000e-01", 0 },
{ 1e-1, "%+10.3e", "+1.000e-01", 0 },
/* __PRINTF_FLAG_SHOWPLUS | __PRINTF_FLAG_LEFTALIGNED */
{ 1e-1, "%+-10.3e", "+1.000e-01", 0 },
/* padding */
/* __PRINTF_FLAG_SHOWPLUS | __PRINTF_FLAG_ZEROPADDED */
{ 1e-1, "%+010.2e", "+01.00e-01", 0 },
{ 1e-1, "%+10.2e", " +1.00e-01", 0 },
/* __PRINTF_FLAG_SHOWPLUS | __PRINTF_FLAG_LEFTALIGNED */
{ 1e-1, "%+-10.2e", "+1.00e-01 ", 0 },
/* __PRINTF_FLAG_SPACESIGN | __PRINTF_FLAG_ZEROPADDED */
{ 1e-1, "% 010.2e", " 01.00e-01", 0 },
/* __PRINTF_FLAG_ZEROPADDED */
{ 1e-1, "%010.2e", "001.00e-01", 0 },
/* __PRINTF_FLAG_SPACESIGN */
{ 1e-1, "% 10.2e", " 1.00e-01", 0 },
{ 1e-1, "%10.2e", " 1.00e-01", 0 },
/* padding fractionals */
/* __PRINTF_FLAG_SHOWPLUS | __PRINTF_FLAG_ZEROPADDED */
{ 1.08e29, "%+010.3e", "+1.080e+29", 0 },
{ 1.08e29, "%+10.3e", "+1.080e+29", 0 },
/* __PRINTF_FLAG_SHOWPLUS | __PRINTF_FLAG_ZEROPADDED */
{ 1.08e29, "%+011.2e", "+001.08e+29", 0 },
{ 1.085e29, "%11.2e", " 1.09e+29", 0 },
/* rounding */
{ 1.345e2, "%+10.2e", " +1.35e+02", 0 },
{ 9.995e2, "%+10.2e", " +1.00e+03", 0 },
{ -9.99499999e2, "%10.2e", " -9.99e+02", 0 },
{ -9.99499999e2, "%10.0e", " -1e+03", 0 },
/* __PRINTF_FLAG_DECIMALPT */
{ -9.99499999e2, "%#10.0e", " -1.e+03", 0 },
/* __PRINTF_FLAG_DECIMALPT */
{ -1.2345006789e+231, "%#10.10e", "-1.2345006789e+231", 0 },
/* __PRINTF_FLAG_DECIMALPT */
{ -1.23450067995e+231, "%#10.10e", "-1.2345006800e+231", 0 },
/* special */
{ 1e300 * 1e300, "%10.5e", " inf", 0 },
{ -1.0 / (1e300 * 1e300), "%10.2e", " -0.00e+00", 0 },
/* __PRINTF_FLAG_BIGCHARS */
{ 1e300 * 1e300, "%10.5E", " INF", 0 },
/* __PRINTF_FLAG_BIGCHARS */
{ -1.0 / (1e300 * 1e300), "%10.2E", " -0.00E+00", 0 },
/*
* Fixed
*/
/* padding */
/* __PRINTF_FLAG_SPACESIGN | __PRINTF_FLAG_ZEROPADDED */
{ 1e-1, "% 010.3f", " 00000.100", 0 },
/*
* __PRINTF_FLAG_SPACESIGN | __PRINTF_FLAG_ZEROPADDED |
* __PRINTF_FLAG_LEFTALIGNED
*/
{ 1e-1, "% 0-10.3f", " 0.100 ", 0 },
/* __PRINTF_FLAG_SPACESIGN | __PRINTF_FLAG_ZEROPADDED */
{ 1e-1, "% 010.3f", " 00000.100", 0 },
{ 1e-1, "%10.3f", " 0.100", 0 },
/* rounding */
{ -0.0, "%10.0f", " -0", 0 },
{ -0.099, "%+10.3f", " -0.099", 0 },
{ -0.0995, "%+10.3f", " -0.100", 0 },
{ -0.0994, "%+10.3f", " -0.099", 0 },
{ -99.995, "%+10.0f", " -100", 0 },
{ 3.5, "%+10.30f", "+3.500000000000000000000000000000", 0 },
{ 3.5, "%+10.0f", " +4", 0 },
{ 0.1, "%+10.6f", " +0.100000", 0 },
/*
* The compiler will go for closer 0.10..055 instead of
* 0.09..917
*/
{ 0.1, "%+10.20f", "+0.10000000000000000550", 0 },
/* Next closest to 0.1 */
{ 0.0999999999999999917, "%+10.20f", "+0.09999999999999999170",
0 },
{ 0.0999999999999999917, "%+10f", " +0.100000", 0 },
{ 0.0999999999999998945, "%10.20f", "0.09999999999999989450",
0 },
};
int patterns_len = (int)(sizeof(pat) / sizeof(pat[0]));
int failed = 0;
const int buf_size = 256;
char buf[256 + 1] = { 0 };
TPRINTF("Test printing of floating point numbers via "
"printf(\"%%f\"):\n");
for (int i = 0; i < patterns_len; ++i) {
snprintf(buf, buf_size, pat[i].fmt, pat[i].val);
if (!str_cmp(buf, pat[i].exp_str)) {
TPRINTF("ok: %s |%s| == |%s|\n",
pat[i].fmt, buf, pat[i].exp_str);
} else {
if (pat[i].warn_str && !str_cmp(buf, pat[i].warn_str)) {
TPRINTF("warn: %s |%s| != |%s|\n",
pat[i].fmt, buf, pat[i].exp_str);
} else {
++failed;
TPRINTF("ERR: %s |%s| != |%s|\n",
pat[i].fmt, buf, pat[i].exp_str);
}
}
}
if (failed) {
return "Unexpectedly misprinted floating point numbers.";
} else {
return 0;
}
}