mars-libowfat/scan/scan_plusminus.c

#include <libowfat/scan.h>

size_t scan_plusminus(const char *src,signed int *dest) {
  *dest=1;
  switch (*src) {
  case '-': *dest=-1; /* fall through */
  case '+': return 1; break;
  }
  return 0;
}