2.2.3.9.23 matrixbase::Floor

Floor

1 Description
2 Syntax
3 Parameters
4 Return
5 Examples
6 Remark
7 See Also
8 Header to Include

Description

Round each cell of this matrix to the nearest integer less than the current cell value (toward minus infinity).

Syntax

int Floor( matrixbase & mbFloor )

Parameters

mbFloor: [output] matrix containing the results

Return

Returns 0 on success and a non-zero error code on failure.

Note that the missing value(NANUM) won't be changed by this function.

Examples

EX1

void matrixbase_Floor_ex1()
{
    int rc; 
    matrix<double> mat1 = {
        { 0.0,   0.1,  1.0,  1.1,  1.5,  1.9},
        { 999,  -0.1, -1.0, -1.1, -1.5, -1.9}
    };
    mat1[1][0]=NANUM;  // set row=2,col=1 to NANUM
  
	rc=mat1.Floor(mat1); 
    if(rc!=0) printf("Error: Floor failed. Error Code=%d\n",rc);
    else{
    	printf("The matrix is:\n");
        for(int ii=0; ii< mat1.GetNumRows(); ii++){
			for(int jj=0; jj< mat1.GetNumCols(); jj++) 
				printf("%g  ", mat1[ii][jj]);
			printf("\r\n");
        }
    }
}

EX2

#define MAKEMAT(X) MatrixLayer MatLy##X;MatLy##X.Create();Matrix Mat##X(MatLy##X)
// Apply various integer-making functions to a matrix
void matrixbase_Floor_ex2()
{
    int rc; 
    matrix<double> mat1 = {
        { 0.0,   0.1,  1.0,  1.1,  1.5,  1.9},
        { 999,  -0.1, -1.0, -1.1, -1.5, -1.9}
    };
    mat1[1][0]=NANUM;  // set row=2,col=1 to NANUM
 
    PageBase pgbase;
 
    MAKEMAT(1);
    pgbase = Project.Pages(); // Get the active page
    pgbase.Rename("Original");
    Mat1 = mat1;
    
	// Change cells to floor values  
    MAKEMAT(2);
    pgbase = Project.Pages(); 
    pgbase.Rename("Floor");
    rc=Mat1.Floor(Mat2); 
    if(rc!=0) printf("Error: Floor failed. Error Code=%d\n",rc);
    else      printf("%s matrix is created.\n",Mat2.GetName());

    // Change cells to fix values
    MAKEMAT(3);
    pgbase = Project.Pages();
    pgbase.Rename("Fix");
    rc=Mat1.Fix(Mat3); 
    if(rc!=0) printf("Error: Fix failed. Error Code=%d\n",rc);
    else      printf("%s matrix is created.\n",Mat3.GetName());
	
    // Change cells to round values
    MAKEMAT(4);
    pgbase = Project.Pages(); 
    pgbase.Rename("Round");
    rc=Mat1.Round(Mat4); 
    if(rc!=0) printf("Error: Round failed. Error Code=%d\n",rc);
    else      printf("%s matrix is created.\n",Mat4.GetName());
 
    // Change cells to ceil values
    MAKEMAT(5);
    pgbase = Project.Pages();
    pgbase.Rename("Ceil");
    rc=Mat1.Ceil(Mat5); 
    if(rc!=0) printf("Error: Ceil failed. Error Code=%d\n",rc);
    else      printf("%s matrix is created.\n",Mat5.GetName());
}

Remark

Round each cell of this matrix to the nearest integer less than the current cell value (toward minus infinity). Notice the differences of Round, Fix, Floor and Ceil.