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fix compile under rtools

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This commit is contained in:
Tianqi Chen
2014-08-26 09:09:28 -07:00
parent 5f6d5d19b8
commit b1bffde6c9
3 changed files with 9 additions and 5 deletions
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11
src/utils/random.h
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@@ -89,16 +89,19 @@ struct Random{
/*! \brief set random number seed */
inline void Seed(unsigned sd) {
this->rseed = sd;
#ifdef _MSC_VER
#if defined(_MSC_VER)||defined(_WIN32)
srand(rseed);
#endif
}
/*! \brief return a real number uniform in [0,1) */
inline double RandDouble(void) {
#ifndef _MSC_VER
return static_cast<double>(rand_r(&rseed)) / (static_cast<double>(RAND_MAX) + 1.0);
// use rand instead of rand_r in windows, for MSVC it is fine since rand is threadsafe
// For cygwin and mingw, this can slows down parallelism, but rand_r is only used in objective-inl.hpp, won't affect speed in general
// todo, replace with another PRNG
#if defined(_MSC_VER)||defined(_WIN32)
return static_cast<double>(rand()) / (static_cast<double>(RAND_MAX) + 1.0);
#else
return static_cast<double>(rand()) / (static_cast<double>(RAND_MAX) + 1.0);
return static_cast<double>(rand_r(&rseed)) / (static_cast<double>(RAND_MAX) + 1.0);
#endif
}
// random number seed