Name
exp2 - returns the base-2 exponential of scalars and vectors
Synopsis
float exp2(float a); float1 exp2(float1 a); float2 exp2(float2 a); float3 exp2(float3 a); float4 exp2(float4 a); half exp2(half a); half1 exp2(half1 a); half2 exp2(half2 a); half3 exp2(half3 a); half4 exp2(half4 a); fixed exp2(fixed a); fixed1 exp2(fixed1 a); fixed2 exp2(fixed2 a); fixed3 exp2(fixed3 a); fixed4 exp2(fixed4 a);Parameters
- a
- Vector or scalar of which to determine the base-2 exponential.
Description
Returns the base-2 exponential a.
For vectors, the returned vector contains the base-2 exponential of each element of the input vector.
Reference Implementation
float3 exp2(float3 a) { float3 rv; int i; for (i=0; i<3; i++) { rv[i] = exp2(a[i]); // this is the ANSI C standard library exp2() } return rv; }exp2 is typically implemented with a native base-2 exponentional instruction.
Profile Support
exp2 is fully supported in all profiles unless otherwise specified.
Support in the fp20 is limited to constant compile-time evaluation.
See Also