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Added helper float random functions frnd 0.0 to 1.0f and frndh -1.0f to 1.0f.

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bkaradzic
2012-12-22 16:19:47 -08:00
parent e144480d3f
commit 84987bfdf2
1 changed files with 15 additions and 0 deletions
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15
include/bx/rng.h
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@@ -92,6 +92,21 @@ namespace bx
uint32_t m_jsr;
};
/// Returns random number between 0.0f and 1.0f.
template <typename Ty>
inline float frnd(Ty* _rng)
{
uint32_t rnd = _rng->gen() & UINT16_MAX;
return float(rnd) * 1.0f/float(UINT16_MAX);
}
/// Returns random number between -1.0f and 1.0f.
template <typename Ty>
inline float frndh(Ty* _rng)
{
return 2.0f * bx::frnd(_rng) - 1.0f;
}
} // namespace bx
#endif // __BX_RNG_H__