+++ /dev/null
-#ifndef _XOPEN_SOURCE
-#define _XOPEN_SOURCE 700
-#endif
-#include <stdio.h>
-#include <string.h>
-#include <errno.h>
-#include <limits.h>
-#include <math.h>
-#include "test.h"
-
-#define DISABLE_SLOW_TESTS
-
-#define TEST(r, f, x, m) ( \
- ((r) = (f)) == (x) || \
- (error("%s failed (" m ")\n", #f, r, x), 0) )
-
-#define TEST_S(s, x, m) ( \
- !strcmp((s),(x)) || \
- (error("[%s] != [%s] (%s)\n", s, x, m), 0) )
-
-static const struct {
- const char *fmt;
- int i;
- const char *expect;
-} int_tests[] = {
- /* width, precision, alignment */
- { "%04d", 12, "0012" },
- { "%.3d", 12, "012" },
- { "%3d", 12, " 12" },
- { "%-3d", 12, "12 " },
- { "%+3d", 12, "+12" },
- { "%+-5d", 12, "+12 " },
- { "%+- 5d", 12, "+12 " },
- { "%- 5d", 12, " 12 " },
- { "% d", 12, " 12" },
- { "%0-5d", 12, "12 " },
- { "%-05d", 12, "12 " },
-
- /* ...explicit precision of 0 shall be no characters. */
- { "%.0d", 0, "" },
- { "%.0o", 0, "" },
- { "%#.0d", 0, "" },
- { "%#.0o", 0, "" },
- { "%#.0x", 0, "" },
-
- /* ...but it still has to honor width and flags. */
- { "%2.0u", 0, " " },
- { "%02.0u", 0, " " },
- { "%2.0d", 0, " " },
- { "%02.0d", 0, " " },
- { "% .0d", 0, " " },
- { "%+.0d", 0, "+" },
-
- /* hex: test alt form and case */
- { "%x", 63, "3f" },
- { "%#x", 63, "0x3f" },
- { "%X", 63, "3F" },
-
- /* octal: test alt form */
- { "%o", 15, "17" },
- { "%#o", 15, "017" },
-
- { NULL, 0.0, NULL }
-};
-
-static const struct {
- const char *fmt;
- double f;
- const char *expect;
-} fp_tests[] = {
- /* basic form, handling of exponent/precision for 0 */
- { "%a", 0.0, "0x0p+0" },
- { "%e", 0.0, "0.000000e+00" },
- { "%f", 0.0, "0.000000" },
- { "%g", 0.0, "0" },
- { "%#g", 0.0, "0.00000" },
- { "%la", 0.0, "0x0p+0" },
- { "%le", 0.0, "0.000000e+00" },
- { "%lf", 0.0, "0.000000" },
- { "%lg", 0.0, "0" },
- { "%#lg", 0.0, "0.00000" },
-
- /* rounding */
- { "%f", 1.1, "1.100000" },
- { "%f", 1.2, "1.200000" },
- { "%f", 1.3, "1.300000" },
- { "%f", 1.4, "1.400000" },
- { "%f", 1.5, "1.500000" },
- { "%.4f", 1.06125, "1.0612" },
- { "%.2f", 1.375, "1.38" },
- { "%.1f", 1.375, "1.4" },
- { "%.1lf", 1.375, "1.4" },
- { "%.15f", 1.1, "1.100000000000000" },
- { "%.16f", 1.1, "1.1000000000000001" },
- { "%.17f", 1.1, "1.10000000000000009" },
- { "%.2e", 1500001.0, "1.50e+06" },
- { "%.2e", 1505000.0, "1.50e+06" },
- { "%.2e", 1505000.00000095367431640625, "1.51e+06" },
- { "%.2e", 1505001.0, "1.51e+06" },
- { "%.2e", 1506000.0, "1.51e+06" },
-
- /* correctness in DBL_DIG places */
- { "%.15g", 1.23456789012345, "1.23456789012345" },
-
- /* correct choice of notation for %g */
- { "%g", 0.0001, "0.0001" },
- { "%g", 0.00001, "1e-05" },
- { "%g", 123456, "123456" },
- { "%g", 1234567, "1.23457e+06" },
- { "%.7g", 1234567, "1234567" },
- { "%.7g", 12345678, "1.234568e+07" },
- { "%.8g", 0.1, "0.1" },
- { "%.9g", 0.1, "0.1" },
- { "%.10g", 0.1, "0.1" },
- { "%.11g", 0.1, "0.1" },
-
- /* pi in double precision, printed to a few extra places */
- { "%.15f", M_PI, "3.141592653589793" },
- { "%.18f", M_PI, "3.141592653589793116" },
-
- /* exact conversion of large integers */
- { "%.0f", 340282366920938463463374607431768211456.0,
- "340282366920938463463374607431768211456" },
-
- { NULL, 0.0, NULL }
-};
-
-int main(void)
-{
- int i, j, k;
- char b[2000];
-
- TEST(i, snprintf(0, 0, "%d", 123456), 6, "length returned %d != %d");
- TEST(i, snprintf(0, 0, "%.4s", "hello"), 4, "length returned %d != %d");
- TEST(i, snprintf(b, 0, "%.0s", "goodbye"), 0, "length returned %d != %d");
-
- strcpy(b, "xxxxxxxx");
- TEST(i, snprintf(b, 4, "%d", 123456), 6, "length returned %d != %d");
- TEST_S(b, "123", "incorrect output");
- TEST(i, b[5], 'x', "buffer overrun");
-
- /* Perform ascii arithmetic to test printing tiny doubles */
- TEST(i, snprintf(b, sizeof b, "%.1022f", 0x1p-1021), 1024, "%d != %d");
- b[1] = '0';
- for (i=0; i<1021; i++) {
- for (k=0, j=1023; j>0; j--) {
- if (b[j]<'5') b[j]+=b[j]-'0'+k, k=0;
- else b[j]+=b[j]-'0'-10+k, k=1;
- }
- }
- TEST(i, b[1], '1', "'%c' != '%c'");
- for (j=2; b[j]=='0'; j++);
- TEST(i, j, 1024, "%d != %d");
-
-
-#ifndef DISABLE_SLOW_TESTS
- errno = 0;
- TEST(i, snprintf(NULL, 0, "%.*u", 2147483647, 0), 2147483647, "cannot print max length %d");
- TEST(i, snprintf(NULL, 0, "%.*u ", 2147483647, 0), -1, "integer overflow %d");
- TEST(i, errno, EOVERFLOW, "after overflow: %d != %d");
-#endif
- for (j=0; int_tests[j].fmt; j++) {
- TEST(i, snprintf(b, sizeof b, int_tests[j].fmt, int_tests[j].i), strlen(b), "%d != %d");
- TEST_S(b, int_tests[j].expect, "bad integer conversion");
- }
-
- for (j=0; fp_tests[j].fmt; j++) {
- TEST(i, snprintf(b, sizeof b, fp_tests[j].fmt, fp_tests[j].f), strlen(b), "%d != %d");
- TEST_S(b, fp_tests[j].expect, "bad floating point conversion");
- }
-
- TEST(i, snprintf(0, 0, "%.4a", 1.0), 11, "%d != %d");
- return test_status;
-}
projects / libc-test / blobdiff