Shift the bits for the descending sequence.
diff --git a/commons-rng-sampling/src/test/java/org/apache/commons/rng/sampling/distribution/ContinuousUniformSamplerTest.java b/commons-rng-sampling/src/test/java/org/apache/commons/rng/sampling/distribution/ContinuousUniformSamplerTest.java
index f1cf6f9..74f86ea 100644
--- a/commons-rng-sampling/src/test/java/org/apache/commons/rng/sampling/distribution/ContinuousUniformSamplerTest.java
+++ b/commons-rng-sampling/src/test/java/org/apache/commons/rng/sampling/distribution/ContinuousUniformSamplerTest.java
@@ -63,16 +63,18 @@
private long l2;
@Override
public long nextLong() {
+ long x;
if (l1 > l2) {
l2++;
// Descending sequence: -1, -2, -3, ...
- return -l2;
+ x = -l2;
+ } else {
+ // Ascending sequence: 0, 1, 2, ...
+ x = l1++;
}
- // Ascending sequence: 0, 1, 2, ...
- l1++;
// Shift by 11 bits to reverse the shift performed when computing the next
// double from a long.
- return l1 << 11;
+ return x << 11;
}
};
final double low = 3.18;
