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