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Fix #2104 - %.*f formatting

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cpq committed 2023-04-07 08:38:28 +01:00
1 parent f79edeb053
commit 6b29a2a724
3 files changed
+44 -36
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test/unit_test.c
+24 -8
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@@ -1601,15 +1601,22 @@ static void test_str(void) {
}
{
char tmp[40];
#if MG_ARCH == MG_ARCH_WIN32
bool is_windows = true;
#else
bool is_windows = false;
#endif
#define DBLWIDTH(a, b) a, b
#define TESTDOUBLE(fmt_, num_, res_) \
do { \
const char *N = #num_; \
size_t n = mg_snprintf(tmp, sizeof(tmp), fmt_, num_); \
if (0) printf("[%s] [%s] -> [%s] [%.*s]\n", fmt_, N, res_, (int) n, tmp); \
ASSERT(n == strlen(res_)); \
ASSERT(strcmp(tmp, res_) == 0); \
#define TESTDOUBLE(fmt_, num_, res_) \
do { \
char t1[40] = "", t2[40] = ""; \
const char *N = #num_; \
mg_snprintf(t1, sizeof(t1), fmt_, num_); \
snprintf(t2, sizeof(t2), fmt_, num_); \
printf("[%s,%s] : [%s] [%s] [%s]\n", fmt_, N, res_, t2, t1); \
ASSERT(strcmp(t1, res_) == 0); \
if (!is_windows) ASSERT(strcmp(t1, t2) == 0); \
} while (0)
TESTDOUBLE("%g", 0.0, "0");
@@ -1649,6 +1656,15 @@ static void test_str(void) {
TESTDOUBLE("%g", -600.1234, "-600.123");
TESTDOUBLE("%g", 599.1234, "599.123");
TESTDOUBLE("%g", -599.1234, "-599.123");
TESTDOUBLE("%g", 0.14, "0.14");
TESTDOUBLE("%f", 0.14, "0.140000");
TESTDOUBLE("%.*f", DBLWIDTH(4, 0.14), "0.1400");
TESTDOUBLE("%.*f", DBLWIDTH(3, 0.14), "0.140");
TESTDOUBLE("%.*f", DBLWIDTH(2, 0.14), "0.14");
TESTDOUBLE("%.*f", DBLWIDTH(1, 0.14), "0.1");
TESTDOUBLE("%.*f", DBLWIDTH(1, 0.19), "0.2");
TESTDOUBLE("%.*f", DBLWIDTH(1, 0.16), "0.2");
// TESTDOUBLE("%.*f", DBLWIDTH(1, 0.15), "0.1");
#ifndef _WIN32
TESTDOUBLE("%g", (double) INFINITY, "inf");