Function ff_parse_and_eval_expr

libavcodec/eval.c:415–425

}

double ff_parse_and_eval_expr(const char *s, const double *const_value, const char * const *const_name,
               double (* const *func1)(void *, double), const char * const *func1_name,
               double (* const *func2)(void *, double, double), const char * const *func2_name,
               void *opaque, const char **error){
    AVExpr * e = ff_parse_expr(s, const_name, func1, func1_name, func2, func2_name, error);
    double d;
    if (!e) return NAN;
    d = ff_eval_expr(e, const_value, opaque);
    ff_free_expr(e);
    return d;
}

#ifdef TEST
#undef printf