NAME

       cos,_cosh,_cospi,_half_cos,_native_cos - Cosine functions.

       gentype cos(gentype );

       gentype cosh(gentype );

       gentype cospi(gentype x);

       gentype half_cos(gentype x);

       gentype native_cos(gentype x);

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

       The vector versions of the math functions operate component-wise. The description is per-component.

       The built-in math functions are not affected by the prevailing rounding mode in the calling environment,
       and always return the same value as they would if called with the round to nearest even rounding mode.

       The built-in math functions take scalar or vector arguments. For any specific use of these function, the
       actual type has to be the same for all arguments and the return type unless otherwise specified.

       The generic type name gentype is used to indicate that the function can take float, float2, float3,
       float4, float8, float16, double, double2, double3, double4, double8, or double16 as the type for the
       arguments.

       If extended with cl_khr_fp16(3clc), generic type name gentype may indicate half and half{2|3|4|8|16} as
       arguments and return values.

       The generic type name gentypef is used to indicate that the function can take float, float2, float3,
       float4, float8, or float16 as the type for the arguments.

       The generic type name gentyped is used to indicate that the function can take double, double2, double3,
       double4, double8, or double16 as the type for the arguments.

SPECIFICATION

       OpenCL Specification[1]

SEE ALSO

       mathFunctions(3clc)

AUTHORS

       The Khronos Group

COPYRIGHT

       Copyright © 2007-2011 The Khronos Group Inc.
       Permission is hereby granted, free of charge, to any person obtaining a copy of this software and/or
       associated documentation files (the "Materials"), to deal in the Materials without restriction, including
       without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
       copies of the Materials, and to permit persons to whom the Materials are furnished to do so, subject to
       the condition that this copyright notice and permission notice shall be included in all copies or
       substantial portions of the Materials.

NOTES

        1. OpenCL Specification
           page 244, section 6.12.2 - Math Functions