diff --git a/src_rebuild/PsyX/include/PsyX/common/half_float.h b/src_rebuild/PsyX/include/PsyX/common/half_float.h index 4884444d..dbee55b6 100644 --- a/src_rebuild/PsyX/include/PsyX/common/half_float.h +++ b/src_rebuild/PsyX/include/PsyX/common/half_float.h @@ -5,6 +5,7 @@ struct half { unsigned short sh; +#if defined(_LANGUAGE_C_PLUS_PLUS)||defined(__cplusplus)||defined(c_plusplus) half() {}; half(const float x); half(const half& other); @@ -15,6 +16,18 @@ struct half sh = other.sh; return *this; } +#endif }; +#if defined(_LANGUAGE_C_PLUS_PLUS)||defined(__cplusplus)||defined(c_plusplus) +extern "C" { +#endif + +extern short to_half_float(const float x); +extern float from_half_float(const short x); + +#if defined(_LANGUAGE_C_PLUS_PLUS)||defined(__cplusplus)||defined(c_plusplus) +} +#endif + #endif // HALF_FLOAT \ No newline at end of file diff --git a/src_rebuild/PsyX/src/gte/half_float.cpp b/src_rebuild/PsyX/src/gte/half_float.cpp index 6045b603..c92194e1 100644 --- a/src_rebuild/PsyX/src/gte/half_float.cpp +++ b/src_rebuild/PsyX/src/gte/half_float.cpp @@ -26,7 +26,7 @@ union FP16 }; }; -half::half(const float x) +short to_half_float(const float x) { // this is a approximate solution FP32 f = *(FP32*)&x; @@ -50,17 +50,12 @@ half::half(const float x) o.u = f.u >> 13; // Take the mantissa bits o.u |= sign >> 16; - sh = o.u; + return o.u; } -half::half(const half& other) +float from_half_float(const short x) { - sh = other.sh; -} - -half::operator float() const -{ - FP16 h = { sh }; + FP16 h = { x }; static const FP32 magic = { 113 << 23 }; static const uint shifted_exp = 0x7c00 << 13; // exponent mask after shift @@ -82,3 +77,20 @@ half::operator float() const o.u |= (h.u & 0x8000) << 16; // sign bit return o.f; } + +// C++ parts + +half::half(const float x) +{ + sh = to_half_float(x); +} + +half::half(const half& other) +{ + sh = other.sh; +} + +half::operator float() const +{ + return from_half_float(sh); +}