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| Rev | Author | Line No. | Line |
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| 6433 | siemargl | 1 | #ifndef _XOPEN_SOURCE |
| 2 | #define _XOPEN_SOURCE 700 |
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| 3 | #endif |
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| 4 | #include |
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| 5 | #include |
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| 6 | //#include |
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| 7 | //#include |
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| 8 | #include |
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| 9 | #include "test.h" |
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| 10 | |||
| 11 | #define DISABLE_SLOW_TESTS |
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| 12 | |||
| 13 | #define TEST(r, f, x, m) ( \ |
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| 14 | ((r) = (f)) == (x) || \ |
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| 15 | (t_error("%s failed (" m ")\n", #f, r, x), 0) ) |
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| 16 | |||
| 17 | #define TEST_S(s, x, m) ( \ |
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| 18 | !strcmp((s),(x)) || \ |
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| 19 | (t_error("[%s] != [%s] (%s)\n", s, x, m), 0) ) |
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| 20 | |||
| 21 | static const struct { |
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| 22 | const char *fmt; |
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| 23 | int i; |
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| 24 | const char *expect; |
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| 25 | } int_tests[] = { |
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| 26 | /* width, precision, alignment */ |
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| 27 | { "%04d", 12, "0012" }, |
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| 28 | { "%.3d", 12, "012" }, |
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| 29 | { "%3d", 12, " 12" }, |
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| 30 | { "%-3d", 12, "12 " }, |
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| 31 | { "%+3d", 12, "+12" }, |
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| 32 | { "%+-5d", 12, "+12 " }, |
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| 33 | { "%+- 5d", 12, "+12 " }, |
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| 34 | { "%- 5d", 12, " 12 " }, |
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| 35 | { "% d", 12, " 12" }, |
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| 36 | { "%0-5d", 12, "12 " }, |
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| 37 | { "%-05d", 12, "12 " }, |
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| 38 | |||
| 39 | /* ...explicit precision of 0 shall be no characters. */ |
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| 40 | { "%.0d", 0, "" }, |
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| 41 | { "%.0o", 0, "" }, |
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| 42 | { "%#.0d", 0, "" }, |
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| 43 | { "%#.0o", 0, "" }, |
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| 44 | { "%#.0x", 0, "" }, |
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| 45 | |||
| 46 | /* ...but it still has to honor width and flags. */ |
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| 47 | { "%2.0u", 0, " " }, |
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| 48 | { "%02.0u", 0, " " }, |
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| 49 | { "%2.0d", 0, " " }, |
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| 50 | { "%02.0d", 0, " " }, |
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| 51 | { "% .0d", 0, " " }, |
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| 52 | { "%+.0d", 0, "+" }, |
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| 53 | |||
| 54 | /* hex: test alt form and case */ |
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| 55 | { "%x", 63, "3f" }, |
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| 56 | { "%#x", 63, "0x3f" }, |
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| 57 | { "%X", 63, "3F" }, |
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| 58 | |||
| 59 | /* octal: test alt form */ |
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| 60 | { "%o", 15, "17" }, |
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| 61 | { "%#o", 15, "017" }, |
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| 62 | |||
| 63 | { NULL, 0.0, NULL } |
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| 64 | }; |
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| 65 | |||
| 66 | static const struct { |
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| 67 | const char *fmt; |
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| 68 | double f; |
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| 69 | const char *expect; |
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| 70 | } fp_tests[] = { |
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| 71 | /* basic form, handling of exponent/precision for 0 */ |
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| 72 | { "%a", 0.0, "0x0p+0" }, |
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| 73 | { "%e", 0.0, "0.000000e+00" }, |
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| 74 | { "%f", 0.0, "0.000000" }, |
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| 75 | { "%g", 0.0, "0" }, |
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| 76 | { "%#g", 0.0, "0.00000" }, |
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| 77 | { "%la", 0.0, "0x0p+0" }, |
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| 78 | { "%le", 0.0, "0.000000e+00" }, |
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| 79 | { "%lf", 0.0, "0.000000" }, |
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| 80 | { "%lg", 0.0, "0" }, |
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| 81 | { "%#lg", 0.0, "0.00000" }, |
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| 82 | |||
| 83 | /* rounding */ |
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| 84 | { "%f", 1.1, "1.100000" }, |
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| 85 | { "%f", 1.2, "1.200000" }, |
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| 86 | { "%f", 1.3, "1.300000" }, |
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| 87 | { "%f", 1.4, "1.400000" }, |
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| 88 | { "%f", 1.5, "1.500000" }, |
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| 89 | { "%.4f", 1.06125, "1.0613" }, /* input is not representible exactly as double */ |
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| 90 | { "%.4f", 1.03125, "1.0312" }, /* 0x1.08p0 */ |
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| 91 | { "%.2f", 1.375, "1.38" }, |
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| 92 | { "%.1f", 1.375, "1.4" }, |
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| 93 | { "%.1lf", 1.375, "1.4" }, |
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| 94 | { "%.15f", 1.1, "1.100000000000000" }, |
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| 95 | { "%.16f", 1.1, "1.1000000000000001" }, |
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| 96 | { "%.17f", 1.1, "1.10000000000000009" }, |
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| 97 | { "%.2e", 1500001.0, "1.50e+06" }, |
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| 98 | { "%.2e", 1505000.0, "1.50e+06" }, |
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| 99 | { "%.2e", 1505000.00000095367431640625, "1.51e+06" }, |
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| 100 | { "%.2e", 1505001.0, "1.51e+06" }, |
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| 101 | { "%.2e", 1506000.0, "1.51e+06" }, |
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| 102 | |||
| 103 | /* correctness in DBL_DIG places */ |
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| 104 | { "%.15g", 1.23456789012345, "1.23456789012345" }, |
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| 105 | |||
| 106 | /* correct choice of notation for %g */ |
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| 107 | { "%g", 0.0001, "0.0001" }, |
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| 108 | { "%g", 0.00001, "1e-05" }, |
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| 109 | { "%g", 123456, "123456" }, |
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| 110 | { "%g", 1234567, "1.23457e+06" }, |
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| 111 | { "%.7g", 1234567, "1234567" }, |
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| 112 | { "%.7g", 12345678, "1.234568e+07" }, |
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| 113 | { "%.8g", 0.1, "0.1" }, |
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| 114 | { "%.9g", 0.1, "0.1" }, |
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| 115 | { "%.10g", 0.1, "0.1" }, |
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| 116 | { "%.11g", 0.1, "0.1" }, |
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| 117 | |||
| 118 | /* pi in double precision, printed to a few extra places */ |
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| 119 | { "%.15f", M_PI, "3.141592653589793" }, |
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| 120 | { "%.18f", M_PI, "3.141592653589793116" }, |
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| 121 | |||
| 122 | /* exact conversion of large integers */ |
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| 123 | { "%.0f", 340282366920938463463374607431768211456.0, |
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| 124 | "340282366920938463463374607431768211456" }, |
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| 125 | |||
| 126 | { NULL, 0.0, NULL } |
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| 127 | }; |
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| 128 | |||
| 129 | int main(void) |
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| 130 | { |
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| 131 | int i, j, k; |
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| 132 | char b[2000]; |
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| 133 | |||
| 134 | TEST(i, snprintf(0, 0, "%d", 123456), 6, "length returned %d != %d"); |
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| 135 | TEST(i, snprintf(0, 0, "%.4s", "hello"), 4, "length returned %d != %d"); |
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| 136 | TEST(i, snprintf(b, 0, "%.0s", "goodbye"), 0, "length returned %d != %d"); |
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| 137 | |||
| 138 | strcpy(b, "xxxxxxxx"); |
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| 139 | TEST(i, snprintf(b, 4, "%d", 123456), 6, "length returned %d != %d"); |
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| 140 | TEST_S(b, "123", "incorrect output"); |
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| 141 | TEST(i, b[5], 'x', "buffer overrun"); |
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| 142 | |||
| 143 | /* Perform ascii arithmetic to test printing tiny doubles */ |
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| 144 | TEST(i, snprintf(b, sizeof b, "%.1022f", 0x1p-1021), 1024, "%d != %d"); |
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| 145 | b[1] = '0'; |
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| 146 | for (i=0; i<1021; i++) { |
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| 147 | for (k=0, j=1023; j>0; j--) { |
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| 148 | if (b[j]<'5') b[j]+=b[j]-'0'+k, k=0; |
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| 149 | else b[j]+=b[j]-'0'-10+k, k=1; |
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| 150 | } |
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| 151 | } |
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| 152 | TEST(i, b[1], '1', "'%c' != '%c'"); |
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| 153 | for (j=2; b[j]=='0'; j++); |
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| 154 | TEST(i, j, 1024, "%d != %d"); |
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| 155 | |||
| 156 | |||
| 157 | #ifndef DISABLE_SLOW_TESTS |
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| 158 | errno = 0; |
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| 159 | TEST(i, snprintf(NULL, 0, "%.*u", 2147483647, 0), 2147483647, "cannot print max length %d"); |
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| 160 | TEST(i, snprintf(NULL, 0, "%.*u ", 2147483647, 0), -1, "integer overflow %d"); |
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| 161 | TEST(i, errno, EOVERFLOW, "after overflow: %d != %d"); |
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| 162 | #endif |
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| 163 | for (j=0; int_tests[j].fmt; j++) { |
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| 164 | i = snprintf(b, sizeof b, int_tests[j].fmt, int_tests[j].i); |
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| 165 | if (i != strlen(int_tests[j].expect)) { |
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| 166 | t_error("snprintf(b, sizeof b, \"%s\", %d) returned %d wanted %d\n", |
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| 167 | int_tests[j].fmt, int_tests[j].i, i, strlen(int_tests[j].expect)); |
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| 168 | } |
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| 169 | if (strcmp(b, int_tests[j].expect) != 0) |
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| 170 | t_error("bad integer conversion fmt[%s]: got \"%s\", want \"%s\"\n", int_tests[j].fmt, b, int_tests[j].expect); |
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| 171 | } |
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| 172 | |||
| 173 | for (j=0; fp_tests[j].fmt; j++) { |
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| 174 | i = snprintf(b, sizeof b, fp_tests[j].fmt, fp_tests[j].f); |
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| 175 | if (i != strlen(fp_tests[j].expect)) { |
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| 176 | t_error("snprintf(b, sizeof b, \"%s\", %f) returned %d wanted %d\n", |
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| 177 | fp_tests[j].fmt, fp_tests[j].f, i, strlen(fp_tests[j].expect)); |
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| 178 | } |
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| 179 | if (strcmp(b, fp_tests[j].expect) != 0) |
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| 180 | t_error("bad floating-point conversion: got \"%s\", want \"%s\"\n", b, fp_tests[j].expect); |
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| 181 | } |
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| 182 | |||
| 183 | TEST(i, snprintf(0, 0, "%.4a", 1.0), 11, "%d != %d"); |
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| 184 | |||
| 185 | printf("%s finished\n", __FILE__); |
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| 186 | |||
| 187 | return t_status; |
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| 188 | } |