radians
Keywords: radians, NVIDIA, NVIDIA Cg Toolkit, Cg Toolkit, Shader, Shader Programming, GPU Shader Programming, GPU Program

> ## Name

> radians - converts values of scalars and vectors from degrees to radians

> ## Synopsis

>     float  radians(float  a);
>     float1 radians(float1 a);
>     float2 radians(float2 a);
>     float3 radians(float3 a);
>     float4 radians(float4 a);

>     half   radians(half  a);
>     half1  radians(half1 a);
>     half2  radians(half2 a);
>     half3  radians(half3 a);
>     half4  radians(half4 a);

>     fixed  radians(fixed  a);
>     fixed1 radians(fixed1 a);
>     fixed2 radians(fixed2 a);
>     fixed3 radians(fixed3 a);
>     fixed4 radians(fixed4 a);

> ## Parameters

> a
>   Vector or scalar of which to convert from degrees to radians.

> ## Description

> Returns the scalar or vector converted from degrees to radians.

> For vectors, the returned vector contains each element of the input vector converted from degrees to radians.

> ## Reference Implementation

> radians for a float scalar could be implemented like this.

>     float radians(float a)
>     {
>       return 0.017453292 * a;
>     }

> ## Profile Support

> radians is supported in all profiles except fp20.

> ## See Also

> cos, degrees, sin, tan