lerp15by16()

LIB8STATIC int16_t lerp15by16	(	int16_t	a,
		int16_t	b,
		fract16	frac )

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

Definition at line 505 of file lib8tion.h.

{
    int16_t result;
    if( b > a) {
        uint16_t delta = b - a;
        uint16_t scaled = scale16( delta, frac);
        result = a + scaled;
    } else {
        uint16_t delta = a - b;
        uint16_t scaled = scale16( delta, frac);
        result = a - scaled;
    }
    return result;
}

References LIB8STATIC, and scale16().

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