NAME
    abs - returns absolute value of scalars and vectors.

SYNPOSIS
      float  abs(float  a);
      float1 abs(float1 a);
      float2 abs(float2 a);
      float3 abs(float3 a);
      float4 abs(float4 a);
 
      half   abs(half  a);
      half1  abs(half1 a);
      half2  abs(half2 a);
      half3  abs(half3 a);
      half4  abs(half4 a);
 
      fixed  abs(fixed  a);
      fixed1 abs(fixed1 a);
      fixed2 abs(fixed2 a);
      fixed3 abs(fixed3 a);
      fixed4 abs(fixed4 a);

PARAMETERS
    a       Vector or scalar of which to determine the absolute value.

DESCRIPTION
    Returns the absolute value of a scalar or vector.

    For vectors, the returned vector contains the absolute value of each
    element of the input vector.

REFERENCE IMPLEMENTATION
    abs for a float scalar could be implemented like this.

      float abs(float a)
      {
        return max(-a, a);
      }

PROFILE SUPPORT
    abs is supported in all profiles.

    Support in the fp20 is limited.

    Consider abs to be free or extremely inexpensive.

SEE ALSO
    the max manpage

