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rand/xorshift: throw on zero seed

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zero seeds are a hard runtime error which shouldn't be compiled out in
release mode.
This commit is contained in:
Danny Robson 2016-07-01 16:25:48 +10:00
parent f741986c3f
commit 138cac23fe
1 changed files with 2 additions and 2 deletions
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4
rand/xorshift.cpp
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@ -28,8 +28,8 @@ template <typename T>
xorshift<T>::xorshift (T seed):
m_state (seed)
{
// state must not be zero, or the period will be zero.
CHECK_NEZ (m_state);
if (!m_state)
throw std::invalid_argument ("xorshift seed must not be zero");
}