frac

> # NAME

> frac - returns the fractional portion of a scalar or each vector component.

> # SYNOPSIS

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

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

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

> # PARAMETERS

> a

>   Vector or scalar of which to return its fractional portion.

> # DESCRIPTION

> Returns the fractional portion of a scalar or each vector component.

> # REFERENCE IMPLEMENTATION

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

>       float frac(float v)
>       {
>         return v - floor(v);
>       }

> # PROFILE SUPPORT

> frac is supported in all profiles except fp20.

> # SEE ALSO

> ceil, floor, round, trunc