the number to scale
the numerator of the scale ratio
the denominator of the scale ratio
val * num / denom. In the case of an overflow, this function returns G_MAXUINT64. If the result is not exactly representable as an integer it is truncated. See also gst_util_uint64_scale_round(), gst_util_uint64_scale_ceil(), gst_util_uint64_scale_int(), gst_util_uint64_scale_int_round(), gst_util_uint64_scale_int_ceil().
Scale val by the rational number num / denom, avoiding overflows and underflows and without loss of precision. This function can potentially be very slow if val and num are both greater than G_MAXUINT32.