beenull/ladybird
1
0
Fork 0
mirror of https://github.com/LadybirdBrowser/ladybird.git synced 2024-11-30 03:20:28 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 7

LibC: Added strtoimax() and strtoumax()

Browse source 
They are the same as strtol() and strtoul() but if there is
overflow/underflow then the maximum integer val/lower integer
val/maximum uint val will be returned while also setting errno to
ERANGE.
This commit is contained in:
Manuel Palenzuela 2021-04-04 01:43:55 +02:00 committed by Andreas Kling
parent 4fa59baafe
commit 13315a6ef1
Notes: sideshowbarker 2024-07-18 20:49:37 +09:00 
Author: https://github.com/Baitinq
Commit: https://github.com/SerenityOS/serenity/commit/13315a6ef1a
Pull-request: https://github.com/SerenityOS/serenity/pull/6098
2 changed files with 36 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

33
Userland/Libraries/LibC/inttypes.cpp
View file

@ -24,7 +24,10 @@
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <AK/NumericLimits.h>
#include <errno.h>
#include <inttypes.h>
#include <stdlib.h>
extern "C" {
@ -41,4 +44,34 @@ imaxdiv_t imaxdiv(intmax_t numerator, intmax_t denominator)
return result;
}
intmax_t strtoimax(const char* str, char** endptr, int base)
{
long long_value = strtoll(str, endptr, base);
intmax_t max_int_value = NumericLimits<intmax_t>::max();
intmax_t min_int_value = NumericLimits<intmax_t>::min();
if (long_value > max_int_value) {
errno = -ERANGE;
return max_int_value;
} else if (long_value < min_int_value) {
errno = -ERANGE;
return min_int_value;
}
return long_value;
}
uintmax_t strtoumax(const char* str, char** endptr, int base)
{
unsigned long ulong_value = strtoull(str, endptr, base);
uintmax_t max_uint_value = NumericLimits<uintmax_t>::max();
if (ulong_value > max_uint_value) {
errno = -ERANGE;
return max_uint_value;
}
return ulong_value;
}
}

3
Userland/Libraries/LibC/inttypes.h
View file

@ -78,4 +78,7 @@ typedef struct imaxdiv_t {
} imaxdiv_t;
imaxdiv_t imaxdiv(intmax_t, intmax_t);
intmax_t strtoimax(const char*, char** endptr, int base);
uintmax_t strtoumax(const char*, char** endptr, int base);
__END_DECLS