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hedgewars/uFloat.pas
changeset 3929 9a4bbc1f67a2
parent 3599 715a43602da8
child 4374 bcefeeabaa33
equal deleted inserted replaced
3927:6f4d3c7fa8be 3929:9a4bbc1f67a2 
    20 
    20 
    21 unit uFloat;
 
    21 unit uFloat;
 
    22 interface
 
    22 interface
 
    23 
    23 
    24 {$IFDEF FPC}
 
    24 {$IFDEF FPC}
 
    25 {$INLINE ON}
 
       
    26 {$IFDEF ENDIAN_LITTLE}
 
    25 {$IFDEF ENDIAN_LITTLE}
 
    27 type hwFloat = record
 
    26 type hwFloat = record
 
    28                isNegative: boolean;
 
    27                isNegative: boolean;
 
    29                case byte of
 
    28                case byte of
 
    30                0: (Frac, Round: Longword);
 
    29                0: (Frac, Round: Longword);
 
    41 
    40 
    42 function int2hwFloat (const i: LongInt) : hwFloat; inline;
 
    41 function int2hwFloat (const i: LongInt) : hwFloat; inline;
 
    43 
    42 
    44 operator + (const z1, z2: hwFloat) z : hwFloat; inline;
 
    43 operator + (const z1, z2: hwFloat) z : hwFloat; inline;
 
    45 operator - (const z1, z2: hwFloat) z : hwFloat; inline;
 
    44 operator - (const z1, z2: hwFloat) z : hwFloat; inline;
 
    46 operator - (const z1: hwFloat) z : hwFloat;
 
    45 operator - (const z1: hwFloat) z : hwFloat; inline;
 
    47 
    46 
    48 operator * (const z1, z2: hwFloat) z : hwFloat;
 
    47 operator * (const z1, z2: hwFloat) z : hwFloat; inline;
 
    49 operator * (const z1: hwFloat; const z2: LongInt) z : hwFloat; inline;
 
    48 operator * (const z1: hwFloat; const z2: LongInt) z : hwFloat; inline;
 
    50 operator / (const z1: hwFloat; z2: hwFloat) z : hwFloat;
 
    49 operator / (const z1: hwFloat; z2: hwFloat) z : hwFloat; inline;
 
    51 operator / (const z1: hwFloat; const z2: LongInt) z : hwFloat;
 
    50 operator / (const z1: hwFloat; const z2: LongInt) z : hwFloat; inline;
 
    52 
    51 
    53 operator < (const z1, z2: hwFloat) b : boolean;
 
    52 operator < (const z1, z2: hwFloat) b : boolean; inline;
 
    54 operator > (const z1, z2: hwFloat) b : boolean;
 
    53 operator > (const z1, z2: hwFloat) b : boolean; inline;
 
    55 
    54 
    56 function cstr(const z: hwFloat): shortstring;
 
    55 function cstr(const z: hwFloat): shortstring;
 
    57 function hwRound(const t: hwFloat): LongInt;
 
    56 function hwRound(const t: hwFloat): LongInt; inline;
 
    58 function hwAbs(const t: hwFloat): hwFloat;
 
    57 function hwAbs(const t: hwFloat): hwFloat; inline;
 
    59 function hwSqr(const t: hwFloat): hwFloat; inline;
 
    58 function hwSqr(const t: hwFloat): hwFloat; inline;
 
    60 function hwSqrt(const t: hwFloat): hwFloat; inline;
 
    59 function hwSqrt(const t: hwFloat): hwFloat; inline;
 
    61 function Distance(const dx, dy: hwFloat): hwFloat;
 
    60 function Distance(const dx, dy: hwFloat): hwFloat;
 
    62 function DistanceI(const dx, dy: LongInt): hwFloat;
 
    61 function DistanceI(const dx, dy: LongInt): hwFloat;
 
    63 function AngleSin(const Angle: Longword): hwFloat;
 
    62 function AngleSin(const Angle: Longword): hwFloat;
 
    64 function AngleCos(const Angle: Longword): hwFloat;
 
    63 function AngleCos(const Angle: Longword): hwFloat;
 
    65 function SignAs(const num, signum: hwFloat): hwFloat;
 
    64 function SignAs(const num, signum: hwFloat): hwFloat; inline;
 
    66 
    65 
    67 {$IFDEF FPC}
 
    66 {$IFDEF FPC}
 
    68 {$J-}
 
    67 {$J-}
 
    69 {$ENDIF}
 
    68 {$ENDIF}
 
    70 {$WARNINGS OFF}
 
    69 {$WARNINGS OFF}
 
   146 {$IFNDEF FPC}
 
   145 {$IFNDEF FPC}
 
   147 type hwFloat = Extended;
 
   146 type hwFloat = Extended;
 
   148 {$ENDIF}
 
   147 {$ENDIF}
 
   149 
   148 
   150 implementation
 
   149 implementation
 
   151 uses uMisc;
 
   150 //uses uMisc;
 
   152 
   151 
   153 
   152 
   154 {$IFDEF FPC}
 
   153 {$IFDEF FPC}
 
   155 
   154 
   156 function int2hwFloat (const i: LongInt) : hwFloat;
 
   155 function int2hwFloat (const i: LongInt) : hwFloat;
 
   346 {$INCLUDE "SinTable.inc"}
 
   345 {$INCLUDE "SinTable.inc"}
 
   347 
   346 
   348 function AngleSin(const Angle: Longword): hwFloat;
 
   347 function AngleSin(const Angle: Longword): hwFloat;
 
   349 begin
 
   348 begin
 
   350 {$IFDEF DEBUGFILE}
 
   349 {$IFDEF DEBUGFILE}
 
   351 TryDo((Angle >= 0) and (Angle <= 2048), 'Sin param exceeds limits', true);
 
   350 //TryDo((Angle >= 0) and (Angle <= 2048), 'Sin param exceeds limits', true);
 
   352 {$ENDIF}
 
   351 {$ENDIF}
 
   353 AngleSin.isNegative:= false;
 
   352 AngleSin.isNegative:= false;
 
   354 if Angle < 1024 then AngleSin.QWordValue:= SinTable[Angle]
 
   353 if Angle < 1024 then AngleSin.QWordValue:= SinTable[Angle]
 
   355                 else AngleSin.QWordValue:= SinTable[2048 - Angle]
 
   354                 else AngleSin.QWordValue:= SinTable[2048 - Angle]
 
   356 end;
 
   355 end;
 
   357 
   356 
   358 function AngleCos(const Angle: Longword): hwFloat;
 
   357 function AngleCos(const Angle: Longword): hwFloat;
 
   359 begin
 
   358 begin
 
   360 {$IFDEF DEBUGFILE}
 
   359 {$IFDEF DEBUGFILE}
 
   361 TryDo((Angle >= 0) and (Angle <= 2048), 'Cos param exceeds limits', true);
 
   360 //TryDo((Angle >= 0) and (Angle <= 2048), 'Cos param exceeds limits', true);
 
   362 {$ENDIF}
 
   361 {$ENDIF}
 
   363 AngleCos.isNegative:= Angle > 1024;
 
   362 AngleCos.isNegative:= Angle > 1024;
 
   364 if Angle < 1024 then AngleCos.QWordValue:= SinTable[1024 - Angle]
 
   363 if Angle < 1024 then AngleCos.QWordValue:= SinTable[1024 - Angle]
 
   365                 else AngleCos.QWordValue:= SinTable[Angle - 1024]
 
   364                 else AngleCos.QWordValue:= SinTable[Angle - 1024]
 
   366 end;
 
   365 end;
hedgewars-draft