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jyd3611

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Hades_h

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»ªÀöµÄÆ®¹ý: ½ð±Ò+6, 3q 2013-04-26 03:52:51
ÒýÓûØÌû:
6Â¥: Originally posted by jyd3611 at 2013-04-18 23:15:25
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Program main

implicit none

Real,External :: Gamma

Write(*,*) "Gamma=",Gamma(X)     !Êä³öGamma»ý·Ö½á¹û

End

!×Óº¯Êý,¼ÆËãGamma»ý·Ö

REAL Function Gamma(X)

implicit none

integer i

Real X,Y,S,T,U

Real :: A(11)=(/0.0000677106,-0.0003442342,0.0015397681,-0.0024467480,0.0109736958,-0.0002109075,0.0742379071,0.0815782188,0.4118402578,0.4227843370,1.0/)

IF (X<=0) THEN

    Write(*,*) "ERR**X<0"

        Gamma=-1.0

End IF

Y=X

IF (Y<=1.0) THEN

  T=1.0/(Y*(Y+1.0))

  Y=Y+2.0

  ELSE IF (Y<=2.0) THEN

  T=1.0/Y

  Y=Y+1.0

  ELSE IF (Y<=3.0) THEN

  T=1.0

  ELSE

  T=1.0

10 IF (Y>3.0) THEN

  Y=Y-1.0

  T=T*Y

  GOTO 10

  END IF

ENd IF

S=A(1)

U=Y-2.0

Do i=1,10

S=S*U+A(i+1)

END do

S=S*T

Gamma=S

Return

END

!×Óº¯Êý½áÊø

!----------------------------------------------------------------

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jyd3611

гæ (³õÈëÎÄ̳)

ÒýÓûØÌû:
2Â¥: Originally posted by ifelseend at 2013-04-17 08:39:43
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ifelseend

¾èÖú¹ó±ö (ÖøÃûдÊÖ)

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ÒýÓûØÌû:
3Â¥: Originally posted by jyd3611 at 2013-04-17 15:45:38
±ä³ÉeÖ¸ÊýµÄ¸µÀïÒ¶±ä»»ÐÎʽÂð£¿...

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always_move_forward,_step_by_step.
4Â¥2013-04-17 21:20:42
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