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tools/nolibc: add tolower() and toupper()

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The kselftest harness uses these functions.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Acked-by: Willy Tarreau <w@1wt.eu>
This commit is contained in:
Thomas Weißschuh
2025-04-11 11:00:42 +02:00
committed by Thomas Weißschuh
parent 4de88a88bc
commit 9b070d97d9
2 changed files with 22 additions and 0 deletions
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tools/include/nolibc/string.h
+17
View File
@@ -289,6 +289,23 @@ char *strrchr(const char *s, int c)
return (char *)ret;
}
static __attribute__((unused))
int tolower(int c)
{
if (c >= 'A' && c <= 'Z')
return c - 'A' + 'a';
return c;
}
static __attribute__((unused))
int toupper(int c)
{
if (c >= 'a' && c <= 'z')
return c - 'a' + 'A';
return c;
}
/* make sure to include all global symbols */
#include "nolibc.h"
tools/testing/selftests/nolibc/nolibc-test.c
+5
View File
@@ -39,6 +39,7 @@
#include <stdint.h>
#include <unistd.h>
#include <limits.h>
#include <ctype.h>
#endif
#endif
@@ -1280,6 +1281,10 @@ int run_stdlib(int min, int max)
CASE_TEST(strerror_EINVAL); EXPECT_STREQ(is_nolibc, strerror(EINVAL), "errno=22"); break;
CASE_TEST(strerror_int_max); EXPECT_STREQ(is_nolibc, strerror(INT_MAX), "errno=2147483647"); break;
CASE_TEST(strerror_int_min); EXPECT_STREQ(is_nolibc, strerror(INT_MIN), "errno=-2147483648"); break;
CASE_TEST(tolower); EXPECT_EQ(1, tolower('A'), 'a'); break;
CASE_TEST(tolower_noop); EXPECT_EQ(1, tolower('a'), 'a'); break;
CASE_TEST(toupper); EXPECT_EQ(1, toupper('a'), 'A'); break;
CASE_TEST(toupper_noop); EXPECT_EQ(1, toupper('A'), 'A'); break;
case __LINE__:
return ret; /* must be last */