Function SDL_ScanFloat

deps/SDL2/src/stdlib/SDL_string.c:230–262

#if !defined(HAVE_VSSCANF) || !defined(HAVE_STRTOD)
static size_t
SDL_ScanFloat(const char *text, double *valuep)
{
    const char *textstart = text;
    unsigned long lvalue = 0;
    double value = 0.0;
    SDL_bool negative = SDL_FALSE;

    if (*text == '-') {
        negative = SDL_TRUE;
        ++text;
    }
    text += SDL_ScanUnsignedLong(text, 10, &lvalue);
    value += lvalue;
    if (*text == '.') {
        int mult = 10;
        ++text;
        while (SDL_isdigit((unsigned char) *text)) {
            lvalue = *text - '0';
            value += (double) lvalue / mult;
            mult *= 10;
            ++text;
        }
    }
    if (valuep && text > textstart) {
        if (negative && value) {
            *valuep = -value;
        } else {
            *valuep = value;
        }
    }
    return (text - textstart);
}
#endif

void *