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/* Copied from https://llvm.org/svn/llvm-project/test-suite/tags/RELEASE_14/SingleSource/Benchmarks
* License: LLVM Release License. See Notice file
*/
package art_benchmarks.stanford;
public class RealMM {
private static final int rowsize = 40;
private double[][] rma = new double [rowsize + 1][rowsize + 1];
private double[][] rmb = new double [rowsize + 1][rowsize + 1];
private double[][] rmr = new double [rowsize + 1][rowsize + 1];
long seed;
// CHECKSTYLE.OFF: .*
void Initrand () {
seed = 74755L; /* constant to long WR*/
}
int Rand () {
seed = (seed * 1309L + 13849L) & 65535L; /* constants to long WR*/
return( (int)seed ); /* typecast back to int WR*/
}
/* Multiplies two real matrices. */
void rInitmatrix ( double m[][] ) {
int temp, i, j;
for ( i = 1; i <= rowsize; i++ )
for ( j = 1; j <= rowsize; j++ ) {
temp = Rand();
m[i][j] = (double)(temp - (temp/120)*120 - 60)/3;
}
}
void rInnerproduct(double result[][], double a[][], double b[][], int row, int column) {
/* computes the inner product of A[row,*] and B[*,column] */
int i;
result[row][column] = 0.0f;
for (i = 1; i<=rowsize; i++) result[row][column] = result[row][column]+a[row][i]*b[i][column];
}
void Mm (int run) {
int i, j;
Initrand();
rInitmatrix (rma);
rInitmatrix (rmb);
for ( i = 1; i <= rowsize; i++ )
for ( j = 1; j <= rowsize; j++ )
rInnerproduct(rmr,rma,rmb,i,j);
}
// CHECKSTYLE.ON: .*
public void timeRealMM(int iters) {
for (int i = 0; i < iters; i++) {
Mm(i);
}
}
public static boolean verify_RealMM() {
RealMM obj = new RealMM();
obj.timeRealMM(1);
// Expected obj.rmr[1][1] value: -775.9999999999999
boolean error = obj.rmr[1][1] < -776.000f || -775.999f < obj.rmr[1][1];
return !error;
}
public static void main(String[] args) {
int rc = 0;
RealMM obj = new RealMM();
long before = System.currentTimeMillis();
obj.timeRealMM(800);
long after = System.currentTimeMillis();
System.out.println("art_benchmarks/stanford/RealMM: " + (after - before));
if (!verify_RealMM()) {
rc++;
}
System.exit(rc);
}
}
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