define the integrand function integrand(z) implicit none real*8 ::z real*8 ::integrand integrand=legendre(z,j)*func(z)*z**l*pi return end function end function 上面我们积分的函数gauss_integral只能投入一个单变量的函数作为变量,但是我们的被积函数integrand中需要使用legendre函数(双变量),其中的j...
module test_pp_define use iso_fortran_env implicit none abstract interface function binary_op_dp(x, y) result(ans) import :: real64 real(real64), intent(in) :: x, y real(real64) :: ans end function binary_op_dp end interface contains function add_dp(a, b) result(ans) real(real...
programdivisionimplicitnone! Define real variablesreal:: p, q, realRes! Define integer variablesinteger:: i, j, intRes! Assigning valuesp =2.0q =3.0i =2j =3! floating point divisionrealRes = p/q intRes = i/jprint*, realResprint*, intResendprogramdivision 编译并执行上述程序时,会产生以下...
例如函数 void cCharFunction( char *msg );需要定义成:void cCharFunction( char *msg , int len ); 经过上面的define之后,在Fortran中,只需调用CCHARFUNCTION( MSG )即可。由于Fortran程序没有明显得字符串结束标志,这样,如果两个字符串连在一起的话,C的程序里就会取到这个连在一起的字符串,因此,最好在...
We have already met FORTRANintrinsic functionslikeabs, cos, sqrt. We can also define our own functions – they work in a similar way tosubroutines. As an example, let's write a program (func.f95) that does some trigonometry. As you know, the trig routines in FORTRAN use radians, not ...
# matrix_add.pyimportnumpyasnpimportctypes# Load the FORTRAN dynamic libraryfortran_lib=ctypes.CDLL('libmatrix_add.so')# Define the function signaturematrix_add=fortran_lib.matrix_add matrix_add.argtypes=[np.ctypeslib.ndpointer(dtype=np.float64),np.ctypeslib.ndpointer(dtype=np.float64),np.ct...
define constants ! define variablesreal :: a, b complex :: z! values for a, ba = 15.2345 b = -20.7689 write(*,*) 'abs(a): ',abs(a),' abs(b): ',abs(b) write(*,*) 'aint(a): ',aint(a),' aint(b): ',aint(b) write(*,*) 'ceiling(a): ',ceiling(a),' ceiling(b...
The gateway C MEX S-function,sfun_atmos.c, declares the Fortran subroutine. /* * Windows uses upper case for Fortran external symbols */ #ifdef _WIN32 #define atmos_ ATMOS #endif extern void atmos_(float *alt, float *sigma, float *delta, ...
#define name[=def]已经出现在源文件中。如果未指定 =def,则名称 name 的值定义为 1。宏符号 name 会传递到预处理程序 fpp(或 cpp-请参见 -xpp 选项)进行扩展。预定义的宏符号具有两个前导下划线。Fortran 语法可能不支持这些宏的实际值-它们只应出现在 fpp 或cpp 预处理程序指令中。(请注意两个前导...
! Define variables - Arguments for computational routine: integer, parameter:: dp=SELECTED_REAL_KIND(15) ! dp=15 digits, sp->6 instead. integer, parameter:: I32=SELECTED_INT_KIND(15) ! INT64=15, INT32=6. mwSignedIndex,parameter:: myOne=1,myTwo=2,myFour=4 ...