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tweak Math.natRandom for Windows to guarantee we never return anything outside [0,1)

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This commit is contained in:
Joel Dice 2008-02-29 12:49:00 -07:00
parent 3c237547ee
commit 1bca2e9e5d
1 changed files with 3 additions and 3 deletions
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6
classpath/java-lang.cpp
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@ -533,11 +533,11 @@ extern "C" JNIEXPORT jdouble JNICALL
Java_java_lang_Math_natRandom(JNIEnv*, jclass)
{
#ifdef WIN32
int r = rand();
if (r == RAND_MAX) {
double r = static_cast<double>(rand()) / static_cast<double>(RAND_MAX);
if (r < 0 or r >= 1) {
return 0;
} else {
return static_cast<double>(r) / static_cast<double>(RAND_MAX);
return r;
}
#else
return drand48();