multiple evaluation
[z]=feval(x,y,f) [z]=feval(x,f)
two vectors
a function or a character string (for Fortran or C call)
Multiple evaluation of a function for one or two arguments of vector type :
returns the vector z
defined by
z(i)=f(x(i))
returns the matrix z
such as
z(i,j)=f(x(i),y(j))
f
is an external
(function or routine) accepting on one or two arguments which are supposed to be real. The
result returned by f
can be real or complex. In case of a Fortran call,
the function f
must be defined in the subroutine
fevaltable.c
(in directory
SCI/modules/differential_equations/src/c
).
deff('[z]=f(x,y)','z=x^2+y^2'); feval(1:10,1:5,f) deff('[z]=f(x,y)','z=x+%i*y'); feval(1:10,1:5,f) feval(1:10,1:5,'parab') //See ffeval.f file feval(1:10,'parab') // For dynamic link (see example ftest in ffeval.f) // you can use the link command (the parameters depend on the machine): // unix('make ftest.o');link('ftest.o','ftest'); feval(1:10,1:5,'ftest') | ![]() | ![]() |