Defines |
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#define | IR(x) ((udword&)(x)) |
| | Integer representation of a floating-point value.
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#define | AIR(x) (IR(x)&0x7fffffff) |
| | Absolute integer representation of a floating-point value.
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#define | FR(x) ((float&)(x)) |
| | Floating-point representation of an integer value.
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#define | IS_NEGATIVE_FLOAT(x) (IR(x)&0x80000000) |
| | Integer-based comparison of a floating point value. Don't use it blindly, it can be faster or slower than the FPU comparison, depends on the context.
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Functions |
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__forceinline float | FastFabs (float x) |
| | Fast fabs for floating-point values. It just clears the sign bit. Don't use it blindy, it can be faster or slower than the FPU comparison, depends on the context.
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__forceinline float | fsat (float f) |
| | Saturates positive to zero.
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__forceinline float | frsqrt (float f) |
| | Computes 1.0f / sqrtf(x).
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__forceinline float | InvSqrt (const float &x) |
| | Computes 1.0f / sqrtf(x). Comes from NVIDIA.
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__forceinline float | fsqrt (float f) |
| | TO BE DOCUMENTED.
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__forceinline float | fepsilon (float f) |
| | Returns the float ranged espilon value.
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__forceinline bool | IsNAN (float value) |
| | Is the float valid ?
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__forceinline float | ComputeFloatEpsilon () |
| | This function computes the slowest possible floating-point value (you can also directly use FLT_EPSILON).
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