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ÄÄλ³æ×ÓÊÖÀïÓкÏÁ÷³¬±Èº¯Êý£¨Hypergeometric 1F1£©µÄfortran³ÌÐò£¬Äܲ»ÄÜ·ÖÏíһϣ¬ÎÒ×Ô¼ºÐ´ÁËÒ»¸ö£¬¿ÉÊǺÍmathematicËãµÄ½á¹û²»Ò»Ñù¡£
1F1(a,b,c)=1+a*c/(b*1!)+a(a+1)*c^2/(b(b+1)*2!)
                    +a(a+1)(a+2)*c^3/(b(b+1)(b+2)*3!)+......
ÏÈÔÚÕâÀïллÁË¡£¡£¡£¡£¡£¡£¡£



PS£º¹þ¹þ£¬¸Õ²ÅдÁËÒ»¸ö£¬¸Ð¾õ´óÌåÉÏÄܶÔÉÏÁË£¬ÎªÁËÒÔºó´ó¼ÒÓÃ×Å·½±ã£¬ÎÒ¾ÍÌùÒ»ÏÂÎÒдµÄ³ÌÐò£¬Ï£ÍûÄãÀ´Ò»Æð½»Á÷£¬ºÇºÇ......
fortran77¸ñʽµÄ£º
        program fhgfh
        implicit real*8(a-z)
       a=0.5
        garm=2.5
        f=4

        z=confluent(a,garm,f)

        write(*,*) z
        end
c      confluent hypergeometric function

        real*8 function  confluent(a,garm,z)
        implicit real*8(a-z)
        confluent=1.0
        do 11 ii=1,120
      
       confluent=confluent+lianchen(a,ii)*z**ii/
     1         (lianchen(garm,ii)*FACTORIAL(ii))
   11 CONTINUE
      return
      END

      REAL*8 FUNCTION lianchen(a,N)
      IMPLICIT REAL*8(A-Z)
        lianchen=a
        do 22 ii=1,N-1
             lianchen=lianchen*(a+ii)
   22 CONTINUE
      return
      END             

        REAL*8 FUNCTION FACTORIAL(N)
      IMPLICIT REAL*8(A-Z)
        FACTORIAL=1.0
      DO 101 I=1,N
           FACTORIAL=FACTORIAL*I
  101 CONTINUE
      return
      END


[ Last edited by janecool on 2011-3-25 at 20:30 ]
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Originally posted by 211985 at 2011-03-26 10:13:36:
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[ Last edited by 211985 on 2011-3-26 at 10:23 ]

Æäʵѭ»·²»ÄÑ£¬¹Ø¼üÊÇi ÊÇ´Ó1µ½ÎÞÇÕâ¸öÎÞÇîÔõÑùʵÏÖÊǹؼü£¬ÎÒдµÄ¾ÍÖ»ÊÇдһ¸öÇó½üËÆÇé¿öϵijÌÐò£¬¿´¿´matlabÓÃCдµÄÔ´´úÂ뻹ÊǺܳ¤µÄ£¬C¸úFortranÆäʵ²î²»¶à£¬ºÇºÇ...
3Â¥2011-03-26 11:01:33
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211985:mad:

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Сľ³æ:)(½ð±Ò+10): ÄãÃÇÁ½¸öÈ˵ÄÌÖÂۺܺà 2011-03-26 16:37:15
ÒýÓûØÌû:
Originally posted by janecool at 2011-03-25 16:19:03:
ÄÄλ³æ×ÓÊÖÀïÓкÏÁ÷³¬±Èº¯Êý£¨Hypergeometric 1F1£©µÄfortran³ÌÐò£¬Äܲ»ÄÜ·ÖÏíһϣ¬ÎÒ×Ô¼ºÐ´ÁËÒ»¸ö£¬¿ÉÊǺÍmathematicËãµÄ½á¹û²»Ò»Ñù¡£
1F1(a,b,c)=1+a*c/(b*1!)+a(a+1)*c^2/(b(b+1)*2!)
                    ...

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CÓïÑÔ,Á½¸öforÑ­»·¾Í¿ÉÒÔ


[ Last edited by 211985 on 2011-3-26 at 10:23 ]
2Â¥2011-03-26 10:13:36
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

211985:mad:

ľ³æ (ÖøÃûдÊÖ)


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ÒýÓûØÌû:
Originally posted by janecool at 2011-03-26 11:01:33:
Æäʵѭ»·²»ÄÑ£¬¹Ø¼üÊÇi ÊÇ´Ó1µ½ÎÞÇÕâ¸öÎÞÇîÔõÑùʵÏÖÊǹؼü£¬ÎÒдµÄ¾ÍÖ»ÊÇдһ¸öÇó½üËÆÇé¿öϵijÌÐò£¬¿´¿´matlabÓÃCдµÄÔ´´úÂ뻹ÊǺܳ¤µÄ£¬C¸úFortranÆäʵ²î²»¶à£¬ºÇºÇ...

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[ Last edited by 211985 on 2011-3-26 at 12:14 ]
4Â¥2011-03-26 11:52:59
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Originally posted by 211985 at 2011-03-26 11:52:59:
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