cos, cosh, cospi
cos
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cos, cosh, cospi, half_cos, native_cos Cosine functions.

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gentype `cos` gentype gentype `cosh` gentype gentype `cospi` gentypex gentype `half_cos` gentypex gentype `native_cos` gentypex

## Description

`cos` is the cosine function.

`cosh` is the hyperbolic cosine function.

`cospi` computes `cos` (`x` * pi).

`half_cos` computes cosine. `x` must be in the range -216... +216. This function is implemented with a minimum of 10-bits of accuracy i.e. an ULP value less than or equal to 8192 ulp.

`native_cos` computes cosine over an implementation-defined range. The maximum error is implementation-defined. Functions with the `native__` prefix may map to one or more native device instructions and will typically have better performance compared to the corresponding functions (without the `native__` prefix). The accuracy (and in some cases the input range(s)) of these functions is implementation-defined.

## Notes

&mathFunctionsInc;

## Specification

OpenCL Specification

## Also see

Math Functions

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