summaryrefslogtreecommitdiff
path: root/apps/plugins/lua/strtol.c
blob: 184951b8448f566c9e1e547d2f101e5e6dee3ea4 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
#include "rocklibc.h"

extern unsigned long int strtoul(const char *ptr, char **endptr, int base);

#define ABS_LONG_MIN 2147483648UL
long int strtol(const char *nptr, char **endptr, int base)
{
  int neg=0;
  unsigned long int v;
  const char*orig=nptr;

  while(isspace(*nptr)) nptr++;

  if (*nptr == '-' && isalnum(nptr[1])) { neg=-1; ++nptr; }
  v=strtoul(nptr,endptr,base);
  if (endptr && *endptr==nptr) *endptr=(char *)orig;
  if (v>=ABS_LONG_MIN) {
    if (v==ABS_LONG_MIN && neg) {
      errno=0;
      return v;
    }
    errno=ERANGE;
    return (neg?LONG_MIN:LONG_MAX);
  }
  return (neg?-v:v);
}