package com.nr.test.test_chapter6;
import static com.nr.NRUtil.buildVector;
import static com.nr.sf.Elliptic.rd;
import static com.nr.sf.Elliptic.rj;
import static com.nr.test.NRTestUtil.maxel;
import static com.nr.test.NRTestUtil.vecsub;
import static org.junit.Assert.fail;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import com.nr.ran.Ran;
public class Test_rd {
@Before
public void setUp() throws Exception {
}
@After
public void tearDown() throws Exception {
}
@Test
public void test() {
int i,N=1000,M=15;
double x,y,z,sbeps;
double xx[]={0.5,0.5,0.5,1.0,1.0,1.0,2.0,2.0,2.0,
5.0,5.0,5.0,10.0,10.0,10.0};
double yy[]={0.5,5.0,10.0,0.5,5.0,10.0,0.5,5.0,10.0,
0.5,5.0,10.0,0.5,5.0,10.0};
double zz[]={0.5,1.0,1.5,2.0,2.5,3.0,3.5,4.0,
0.5,1.0,1.5,2.0,2.5,3.0,3.5};
double fingerprint[]={2.828427124746189,0.6761446800665275,0.3561311564429841,
0.61767396750725501,0.25585876344175834,0.16707403783066954,
0.28683033981461781,0.14094109198361518,0.57990472541731197,
0.6761446800665275,0.24574380041928576,0.1516469228750387,
0.22495805526027765,0.10980936208850103,0.076942538498807111};
double[] f1= new double[N],f2= new double[N],ff1 = new double[M],expect = buildVector(fingerprint);
boolean localflag, globalflag=false;
// Test rd
System.out.println("Testing rd");
// Test values against those of rj(x,y,z);
Ran myran = new Ran(17);
for (i=0;i<N;i++) {
x=10.0*myran.doub();
y=10.0*myran.doub();
z=10.0*myran.doub();
f1[i]=rd(x,y,z);
f2[i]=rj(x,y,z,z);
}
System.out.printf("rd: Maximum discrepancy = %f\n", maxel(vecsub(f1,f2)));
sbeps=1.e-14;
localflag = maxel(vecsub(f1,f2)) > sbeps;
globalflag = globalflag || localflag;
if (localflag) {
fail("*** rd: Function rd(x,y,z) does not equal rf(x,y,z,z)");
}
// Fingerprint test
for (i=0;i<M;i++) {
ff1[i]=rd(xx[i],yy[i],zz[i]);
// System.out.printf(setprecision(20) << ff1[i]);
}
System.out.printf("rd: Fingerprint discrepancy = %f\n", maxel(vecsub(ff1,expect)));
localflag = maxel(vecsub(ff1,expect)) > sbeps;
globalflag = globalflag || localflag;
if (localflag) {
fail("*** rd: Fuction does not match previously computed fingerprint");
}
if (globalflag) System.out.println("Failed\n");
else System.out.println("Passed\n");
}
}