ceil

> # NAME

> ceil - returns smallest integer not less than a scalar or each vector component.

> # SYNOPSIS

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

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

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

> # PARAMETERS

> a

>   Vector or scalar of which to determine the ceiling.

> # DESCRIPTION

> Returns the ceiling or smallest integer not less than a scalar or each vector component.

> # REFERENCE IMPLEMENTATION

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

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

> # PROFILE SUPPORT

> ceil is supported in all profiles except fp20.

> # SEE ALSO

> floor