# Dot4_F16

Multiplies two vectors of 16.16 values.

### Synopsis

`frac16 Dot4_F16( vec4f16 v1, vec4f16 v2 )`

### Description

This function multiplies two 4-coordinate vectors of 16.16 values together and returns the dot product.

### Arguments

v1, v2 4-coordinate vector multiplicands.

### Return Value

The function returns the dot product of the two vectors.

### Implementation

SWI implemented in operamath V20.

### Associated Files

operamath.h

### See Also

``Dot3_F16`()`