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SL-18837: Ditch inactive llrand.cpp LL_USE_SYSTEM_RAND code. 

LL_USE_SYSTEM_RAND has been disabled since June 2008; that code only clutters
the implementation we actually use.
master
Nat Goodspeed 2023-07-18 09:45:00 -04:00
parent 4b158580e5
commit 14d0b514af
1 changed files with 3 additions and 43 deletions
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46
indra/llcommon/llrand.cpp
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@ -58,48 +58,12 @@
* to restore uniform distribution.
*/
static LLRandLagFib2281 gRandomGenerator(LLUUID::getRandomSeed());
// no default implementation, only specific F64 and F32 specializations
template <typename REAL>
inline REAL ll_internal_random();
// *NOTE: The system rand implementation is probably not correct.
#define LL_USE_SYSTEM_RAND 0
/*****************************************************************************
* The LL_USE_SYSTEM_RAND implementation has been disabled since June 2008.
*****************************************************************************/
#if LL_USE_SYSTEM_RAND
#include <cstdlib>
class LLSeedRand
{
public:
LLSeedRand()
{
#if LL_WINDOWS
srand(LLUUID::getRandomSeed());
#else
srand48(LLUUID::getRandomSeed());
#endif
}
};
static LLSeedRand sRandomSeeder;
template <>
inline F64 ll_internal_random<F64>()
{
#if LL_WINDOWS
return (F64)rand() / (F64)(RAND_MAX+1);
#else
return drand48();
#endif
}
/*****************************************************************************
* This is the implementation we've been using.
*****************************************************************************/
#else // LL_USE_SYSTEM_RAND
static LLRandLagFib2281 gRandomGenerator(LLUUID::getRandomSeed());
template <>
inline F64 ll_internal_random<F64>()
{
@ -111,11 +75,7 @@ inline F64 ll_internal_random<F64>()
if(!((rv >= 0.0) && (rv < 1.0))) return fmod(rv, 1.0);
return rv;
}
#endif // LL_USE_SYSTEM_RAND
/*****************************************************************************
* Functions common to both implementations
*****************************************************************************/
template <>
inline F32 ll_internal_random<F32>()
{