strtof
float strtof(const char * __restrict, char ** __restrict);
fval = strtof(src, NULL);
if ((cap = strtof(prop_id, &unitp)) <= 0 || *unitp != '\0' ||
interval = strtof(argv[argc - 1], &end);
interval = strtof(argv[argc - 1], &end);
extern float strtof(const char *_RESTRICT_KYWD, char **_RESTRICT_KYWD);
CHECK_END(strtof);
return sval_type_fval(type, strtof(start, (char **)endp));
extern float strtof(const char *__restrict__ ptr, char **__restrict__ endptr);