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#ifndef RANDOM_H
#define RANDOM_H
#include "common.h"
namespace JMath {
/**
* @ingroup jsystem-jmath
*
*/
struct TRandom_fast_ {
u32 value;
TRandom_fast_(u32 value);
u32 get(void) {
value = (value * 0x19660d) + 0x3c6ef35f;
return value;
}
u32 get_bit32(void) { return this->get(); }
// due to the float constant, having this function inlined adds that float to data,
// making it not match
float get_ufloat_1(void) {
// !@bug UB: in C++ it's not legal to read from an union member other
// than the last one that was written to.
union {
f32 f;
u32 s;
} out;
out.s = (this->get() >> 9) | 0x3f800000;
return out.f - 1;
}
void setSeed(u32 seed) { value = seed; }
};
template <class RandomT>
class TRandom_ : public RandomT {
public:
TRandom_(u32 value) : RandomT(value) {}
u8 get_uint8(u8 param_0) {
return get_ufloat_1() * param_0;
}
};
} // namespace JMath
#endif /* RANDOM_H */
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