[MINOR] provide easier-to-use ultoa_* functions
Current ultoa() function is limited to one use per expression or
function call. Sometimes this is limitating. Change this in favor
of an array of 10 return values and shorter macros U2A0..U2A9
which respectively call the function with the 10 different buffers.
diff --git a/src/standard.c b/src/standard.c
index 80e0d1b..fff7168 100644
--- a/src/standard.c
+++ b/src/standard.c
@@ -20,8 +20,11 @@
#include <common/standard.h>
#include <proto/log.h>
-/* enough to store 2^64-1 = 18446744073709551615 */
-static char itoa_str[21];
+/* enough to store 10 integers of :
+ * 2^64-1 = 18446744073709551615 or
+ * -2^63 = -9223372036854775808
+ */
+char itoa_str[10][21];
/*
* copies at most <size-1> chars from <src> to <dst>. Last char is always
@@ -43,20 +46,20 @@
}
/*
- * This function simply returns a statically allocated string containing
+ * This function simply returns a locally allocated string containing
* the ascii representation for number 'n' in decimal.
*/
-char *ultoa(unsigned long n)
+const char *ultoa_r(unsigned long n, char *buffer, int size)
{
char *pos;
- pos = itoa_str + sizeof(itoa_str) - 1;
+ pos = buffer + size - 1;
*pos-- = '\0';
do {
*pos-- = '0' + n % 10;
n /= 10;
- } while (n && pos >= itoa_str);
+ } while (n && pos >= buffer);
return pos + 1;
}