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