# CosF16

Computes the 16.16 operamath cosine of a 16.16 fraction angle.

### Synopsis

`frac16 CosF16( frac16 x )`

### Description

This function returns the 16.16 operamath cosine of a 16.16 fraction angle. In operamath coordinates, there are 256.0 units in a circle.

### Arguments

x
  A 16.16 fraction describing the angle of the circle.

### Return Value

The value returned is the cosine of the input angle.

### Implementation

Folio call implemented in operamath V20.

### Associated Files

operamath.h, operamath.lib

### See Also

``SinF16`(), CosF32(), SinF32(), CosF30(), SinF30()`