lerp15by16()

LIB8STATIC fl::i16 lerp15by16	(	fl::i16	a,
		fl::i16	b,
		fract16	frac )

Linear interpolation between two signed 15-bit values, with 8-bit fraction.

Definition at line 431 of file lib8tion.h.

{
    fl::i16 result;
    if( b > a) {
        fl::u16 delta = b - a;
        fl::u16 scaled = scale16( delta, frac);
        result = a + scaled;
    } else {
        fl::u16 delta = a - b;
        fl::u16 scaled = scale16( delta, frac);
        result = a - scaled;
    }
    return result;
}

References LIB8STATIC.