HelenOS sources
_strtoumax 222 common/strtol.c uintmax_t number = _strtoumax(nptr, endptr, base, &sgn, err, nonstd);
_strtoumax 240 common/strtol.c uintmax_t number = _strtoumax(nptr, endptr, base, &sgn, err, nonstd);
_strtoumax 222 kernel/generic/common/strtol.c uintmax_t number = _strtoumax(nptr, endptr, base, &sgn, err, nonstd);
_strtoumax 240 kernel/generic/common/strtol.c uintmax_t number = _strtoumax(nptr, endptr, base, &sgn, err, nonstd);
_strtoumax 222 uspace/lib/c/common/strtol.c uintmax_t number = _strtoumax(nptr, endptr, base, &sgn, err, nonstd);
_strtoumax 240 uspace/lib/c/common/strtol.c uintmax_t number = _strtoumax(nptr, endptr, base, &sgn, err, nonstd);
HelenOS homepage, sources at GitHub