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authorMattias Andrée <maandree@kth.se>2024-08-18 09:58:23 +0200
committerMattias Andrée <maandree@kth.se>2024-08-18 09:58:23 +0200
commita69f0f613687edf6c1f1ee83b462f77e8ea3c9a9 (patch)
treed976683461a0f427d2f1ef79a8732a048dd0c67b /strtohh.c
parentMerge tag '1.3' into since (diff)
parentUpdate VERSION_MINOR (diff)
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Merge tag '1.4' into since
Version 1.4
Diffstat (limited to '')
-rw-r--r--strtohh.c69
1 files changed, 69 insertions, 0 deletions
diff --git a/strtohh.c b/strtohh.c
new file mode 100644
index 0000000..3fb21b8
--- /dev/null
+++ b/strtohh.c
@@ -0,0 +1,69 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+#ifndef TEST
+
+
+signed char
+libsimple_strtohh(const char *restrict nptr, char **restrict end, int base)
+{
+ signed long int r = strtol(nptr, end, base);
+ if (r < SCHAR_MIN) {
+ r = SCHAR_MIN;
+ errno = ERANGE;
+ } else if (r > SCHAR_MAX) {
+ r = SCHAR_MAX;
+ errno = ERANGE;
+ }
+ return (signed char)r;
+}
+
+
+#else
+#include "test.h"
+
+static void
+add_one(char *buf)
+{
+ char *p = strchr(buf, '\0');
+ while (*--p == '9')
+ *p = '0';
+ *p += 1;
+}
+
+int
+main(void)
+{
+ char str[128];
+ char *e;
+ sprintf(str, "0x%x", (unsigned int)SCHAR_MAX);
+ errno = 0;
+ assert(strtohh(str, NULL, 0) == SCHAR_MAX && !errno);
+ assert(strtohh(str, NULL, 16) == SCHAR_MAX && !errno);
+ assert(strtohh(&str[2], NULL, 16) == SCHAR_MAX && !errno);
+ assert(strtohh(str, NULL, 10) == 0 && !errno);
+ assert(strtohh(str, &e, 0) == SCHAR_MAX && !*e && !errno);
+ assert(strtohh(str, &e, 10) == 0 && *e == 'x' && !errno);
+ sprintf(str, "0x%x ", (unsigned int)SCHAR_MAX);
+ assert(strtohh(str, &e, 16) == SCHAR_MAX && *e == ' ' && !errno);
+ sprintf(str, "-%i", SCHAR_MAX);
+ assert(strtohh(&str[1], &e, 10) == SCHAR_MAX && !*e && !errno);
+ assert(strtohh(str, &e, 10) == -SCHAR_MAX && !*e && !errno);
+ sprintf(str, "%i", SCHAR_MIN);
+ assert(strtohh(str, &e, 10) == SCHAR_MIN && !*e && !errno);
+ assert(strtohh("12", &e, 10) == 12 && !*e && !errno);
+ assert(strtohh("12", &e, 8) == 012 && !*e && !errno);
+ assert(strtohh("012", &e, 0) == 012 && !*e && !errno);
+ sprintf(str, "%i", SCHAR_MAX);
+ add_one(str);
+ assert(strtohh(str, &e, 10) == SCHAR_MAX && !*e && errno == ERANGE);
+ errno = 0;
+ sprintf(str, "%i", SCHAR_MIN);
+ add_one(str);
+ assert(strtohh(str, &e, 10) == SCHAR_MIN && !*e && errno == ERANGE);
+ errno = 0;
+ assert(!strtohh("1", &e, -10000) && errno == EINVAL);
+ errno = 0;
+ return 0;
+}
+
+#endif