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1、C/C+/Fortran混合编程浅谈（一）直接链接方式现今流行很多编程语言，在编译型语言中，C/C+/Fortran语言应用非常广泛，C以其效率高效底层操作为著称，C+以其很好的面向对象类框架泛型编程为特点，Fortra n则以现世存有大量的计算程序而占有重要的位置，在编程中，集合他们三者的长处是个很好的做法。混合 编程有很多方法，以下介绍一下基本方法。对于各个编译器，如果编译中间的二进制文件.o或.obj的结构相同，则可以直接链接混合编程。遵循约定：C/C+默认传值，Fortra n 传址。、相同编译器家族等。以 gcc 家族为例，类似的还有Intel C Compiler 和 In tel
2、 Fortran Compiler 1、C 和 Fortran(1) C 调用 Fortran main .c#i ncludevoid sub_fortran_(int *, float *, double *);double function_fortran_(double *);int main()int num_int;float num_float;double nu m_double;double num;num_in t=3;nu m_float=5.0;sub_fortra n_(&numnt,&num _float,&num _double);num=fun ctio n_f
3、ortra n_(&num _double);printf( numnt=%dnnum_float=%fnnum_double =%fnnum=%f,numnt,num _float, num _double,num);return 0;sub.f90subrouti neSub_Fortra n(N uml nt,NumFloat,NumDouble)implicit nonein teger : Numlntreal : NumFloatreal(8) : NumDoubleNumDouble=NumFloat*NumI ntend subrout inereal(8) fun ctio
4、nFun ctio n_ Fortra n(N umDouble)implicit nonereal(8) : NumDoubleFunction_Fortran=sqrt (NumDouble)end fun cti onsub.f90(F2003 方式)subrouti neSub_Fortra n(N uml nt,NumFloat,NumDouble)use ISO_C_BINDINGimplicit noneinteger (c_int) : Numlntreal (c_float) : NumFloatreal (c_double) : NumDoubleNumDouble=Num
5、Float*NumI nt end subrout inereal (c_double) functionFun ctio n_ Fortra n(N umDouble)use ISO_C_BINDINGimplicit nonereal (c_double) : NumDoubleFunction_Fortran=sqrt (NumDouble)end fun cti on链接方法gcc mai n.o-c mai n.cgfortra no sub.o c sub.f90 gcc mai n.exe mai n.o sub.o或者直接gcc -o main.exe main.c sub.f
6、90输岀E=teinnum_int =3 num_float =5 000000 num_double =12S-003000 num=11_180340Fortran调用Cmai n.f90program mainimplicit nonein terfacesubrout inesub_c (n1,n2,n3)in teger : n1 real : n2 real(8) : n3end subrout inereal(8) fun cti onfun c_c( n3)real(8) : n3end functionend in terfacein teger : n1real : n2r
7、eal(8) : n3, n4n1=3n2=5.0call sub_c(n1,n2,n3)n4=func_c(n3)write (*,*)n 1=,n1write (*,*)n 2=,n2write (*,*)n 3=,n3write (*,*)n 4=,n4end programmai n. f90(F2003方式）program mai nuse ISO_C_BINDING implicit none in terfacesubrout inesub_c (n1,n2,n3)use ISO_C_BINDINGinteger (c_int) : n1real (c_float) : n2re
8、al (c_double) : n3end subrout inereal (c_double)function func_c(n3)use ISO_C_BINDINGreal (c_double) : n3end functionend in terfaceinteger (c_int) : n1real (c_float) : n2real (c_double) : n3,n4n1=3n2=5.0call sub_c(n1,n2,n3)n4=func_c(n3)write (*,*) n 1= ,n1write (*,*) n2= ,n2write (*,*) n3= ,n3write (
9、*,*) n4= ,n4end programsub.c#in clude void sub_c_( int *, float *, double *);double func_c_( double *);void sub_c_( int *n1, float *n2, double *n3) *n 3=pow(* n2,* n1);double func_c_( double *n3)double n4;n 4=sqrt(* n3);return n4;gfortra n链接方式gcc sub.o sub.cgfortra n-o mai n.o main .f90gfortra no ma
10、i n.exe mai n.o sub.o或是直接o mai n. exe mai n.f90 sub.c输岀|E*XtXtempiTiain1nl =3n2 -n3 =125 JRI00000000I00060n4-丄1.180339687498949visual C+ 与 FORTRAN!合编程(2010-04-22 14:15:25)转载标签:分类：科研visualcfortran混合编程原文：http:/ Microsoft Developer Studio创建包含c语言和 FORTRA语言的工程。创建wi n32 con sole工程，分别添加cma in .cpp和forsubs.
11、for 两个文件，编译 链接。#i nclude extern C int _stdcall FACT (int n);extern C void _stdcall PYTHAGORAS (float a, float b, float *c); mai n()float c;printf(Factorial of 7 is: %dn, FACT(7);PYTHAGORAS (30, 40, & c);printf(Hypotenuse if sides 30, 40 is: %fn, c);C File FORSUBS.FORCINTEGER*4 FUNCTION Fact (n)INTEG
12、ER*4 n VALUEINTEGER*4 i, amtamt = 1DO i = 1, namt = amt * iEND DOFact = amtENDSUBROUTINE Pythagoras (a, b, c)REAL*4 a VALUEREAL*4 b VALUEREAL*4 c REFERENCEc = SQRT (a * a + b * b) write(*,*) 你成功了！ END方法二：把FORTRA子程序做成动态链接库供VC主程序显式调用 创建FORTRAN DL工程，生成forsubs.dll文件供调用。! forsubs.f90! FUNCTIONS/SUBROUTIN
13、ES exported from FORSUBS.dll:! FORSUBS - subroutine!INTEGER*4 FUNCTION Fact (n)!DEC$ ATTRIBUTES DLLEXPORT:FactINTEGER*4 n VALUEINTEGER*4 i, amtamt = 1 DO i = 1, namt = amt * iEND DOFact = amt write(*,*)Mixed calls succeed!ENDSUBROUTINE Pythagoras (a, b, c)!DEC$ ATTRIBUTES DLLEXPORT:PythagorasREAL*4
14、a VALUEREAL*4 b VALUEREAL*4 c REFERENCEc = SQRT (a * a + b * b)END(2) 创建 win32 console application ，调用 forsubs.dll 。/C+显式调用FORTRA动态链接库#include #include #include main()/ 声明调用约定typedef int (_stdcall * FACT)(int n);typedef void (_stdcall * PYTHAGORAS)(float a, float b, float *c);/ 加载动态库文件HINSTANCE hLibrary=LoadLibrary(forsubs.dl
