Defines |
| #define | AIR(x) (IR(x)&0x7fffffff) |
| | Absolute integer representation of a floating-point value.
|
| #define | CHECK_VALID_FLOAT(x) ASSERT(IsValidFloat(x)); |
| #define | FCMOVB_ST0 _asm _emit 0xda _asm _emit 0xc0 |
| #define | FCMOVB_ST1 _asm _emit 0xda _asm _emit 0xc1 |
| #define | FCMOVB_ST2 _asm _emit 0xda _asm _emit 0xc2 |
| #define | FCMOVB_ST3 _asm _emit 0xda _asm _emit 0xc3 |
| #define | FCMOVB_ST4 _asm _emit 0xda _asm _emit 0xc4 |
| #define | FCMOVB_ST5 _asm _emit 0xda _asm _emit 0xc5 |
| #define | FCMOVB_ST6 _asm _emit 0xda _asm _emit 0xc6 |
| #define | FCMOVB_ST7 _asm _emit 0xda _asm _emit 0xc7 |
| #define | FCMOVNB_ST0 _asm _emit 0xdb _asm _emit 0xc0 |
| #define | FCMOVNB_ST1 _asm _emit 0xdb _asm _emit 0xc1 |
| #define | FCMOVNB_ST2 _asm _emit 0xdb _asm _emit 0xc2 |
| #define | FCMOVNB_ST3 _asm _emit 0xdb _asm _emit 0xc3 |
| #define | FCMOVNB_ST4 _asm _emit 0xdb _asm _emit 0xc4 |
| #define | FCMOVNB_ST5 _asm _emit 0xdb _asm _emit 0xc5 |
| #define | FCMOVNB_ST6 _asm _emit 0xdb _asm _emit 0xc6 |
| #define | FCMOVNB_ST7 _asm _emit 0xdb _asm _emit 0xc7 |
| #define | FCOMI_ST0 _asm _emit 0xdb _asm _emit 0xf0 |
| #define | FCOMI_ST1 _asm _emit 0xdb _asm _emit 0xf1 |
| #define | FCOMI_ST2 _asm _emit 0xdb _asm _emit 0xf2 |
| #define | FCOMI_ST3 _asm _emit 0xdb _asm _emit 0xf3 |
| #define | FCOMI_ST4 _asm _emit 0xdb _asm _emit 0xf4 |
| #define | FCOMI_ST5 _asm _emit 0xdb _asm _emit 0xf5 |
| #define | FCOMI_ST6 _asm _emit 0xdb _asm _emit 0xf6 |
| #define | FCOMI_ST7 _asm _emit 0xdb _asm _emit 0xf7 |
| #define | FCOMIP_ST0 _asm _emit 0xdf _asm _emit 0xf0 |
| #define | FCOMIP_ST1 _asm _emit 0xdf _asm _emit 0xf1 |
| #define | FCOMIP_ST2 _asm _emit 0xdf _asm _emit 0xf2 |
| #define | FCOMIP_ST3 _asm _emit 0xdf _asm _emit 0xf3 |
| #define | FCOMIP_ST4 _asm _emit 0xdf _asm _emit 0xf4 |
| #define | FCOMIP_ST5 _asm _emit 0xdf _asm _emit 0xf5 |
| #define | FCOMIP_ST6 _asm _emit 0xdf _asm _emit 0xf6 |
| #define | FCOMIP_ST7 _asm _emit 0xdf _asm _emit 0xf7 |
| #define | FR(x) ((float&)(x)) |
| | Floating-point representation of an integer value.
|
| #define | IR(x) ((udword&)(x)) |
| | Integer representation of a floating-point value.
|
| #define | IS_NEGATIVE_FLOAT(x) ((x)<0) |
| #define | SIGN_BITMASK 0x80000000 |
| #define | SIR(x) ((sdword&)(x)) |
| | Signed integer representation of a floating-point value.
|
Enumerations |
| enum | FPUMode { FPU_FLOOR = 0,
FPU_CEIL = 1,
FPU_BEST = 2,
FPU_FORCE_DWORD = 0x7fffffff
} |
Functions |
| inline_ float | ComputeFloatEpsilon () |
| | This function computes the slowest possible floating-point value (you can also directly use FLT_EPSILON)
|
| inline_ int | ConvertToSortable (float f) |
| inline_ float | FastFabs (float x) |
| inline_ float | FastSqrt (float square) |
| | Fast square root for floating-point values.
|
| inline_ float | FCMax2 (float a, float b) |
| | A global function to find MAX(a,b) using FCOMI/FCMOV.
|
| inline_ float | FCMax3 (float a, float b, float c) |
| | A global function to find MAX(a,b,c) using FCOMI/FCMOV.
|
| inline_ float | FCMin2 (float a, float b) |
| | A global function to find MIN(a,b) using FCOMI/FCMOV.
|
| inline_ float | FCMin3 (float a, float b, float c) |
| | A global function to find MIN(a,b,c) using FCOMI/FCMOV.
|
| inline_ float | fepsilon (float f) |
| | Returns the float ranged espilon value.
|
| inline_ float | frsqrt (float f) |
| | Computes 1.0f / sqrtf(x).
|
| inline_ float | fsat (float f) |
| | Saturates positive to zero.
|
| inline_ float | fsqrt (float f) |
| | TO BE DOCUMENTED.
|
| FUNCTION ICECORE_API FPUMode | GetFPUMode () |
| FUNCTION ICECORE_API int | intCeil (const float &f) |
| FUNCTION ICECORE_API int | intChop (const float &f) |
| FUNCTION ICECORE_API int | intFloor (const float &f) |
| inline_ float | InvSqrt (const float &x) |
| | Computes 1.0f / sqrtf(x). Comes from NVIDIA.
|
| inline_ bool | IsFloatZero (float x, float epsilon=1e-6f) |
| inline_ bool | IsIndeterminate (float value) |
| inline_ bool | IsMinusInf (float value) |
| inline_ bool | IsNAN (float value) |
| | Is the float valid ?
|
| inline_ bool | IsPlusInf (float value) |
| inline_ bool | IsValidFloat (float value) |
| FUNCTION ICECORE_API void | RestoreFPU () |
| inline_ float | RSqrt (float number) |
| FUNCTION ICECORE_API void | SaveFPU () |
| FUNCTION ICECORE_API void | SetFPUBestMode () |
| FUNCTION ICECORE_API void | SetFPUCeilMode () |
| FUNCTION ICECORE_API void | SetFPUFloorMode () |
| FUNCTION ICECORE_API void | SetFPUPrecision24 () |
| FUNCTION ICECORE_API void | SetFPUPrecision53 () |
| FUNCTION ICECORE_API void | SetFPUPrecision64 () |
| FUNCTION ICECORE_API void | SetFPURoundingChop () |
| FUNCTION ICECORE_API void | SetFPURoundingDown () |
| FUNCTION ICECORE_API void | SetFPURoundingNear () |
| FUNCTION ICECORE_API void | SetFPURoundingUp () |
Contains FPU related code.
- Author:
- Pierre Terdiman
- Date:
- April, 4, 2000
Definition in file IceFPU.h.
