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Please note that the recommended version of Scilab is 6.0.1. This page might be outdated.
See the recommended documentation of this function

Scilab help >> Differential Equations, Integration > feval

feval

multiple evaluation

Calling Sequence

[z]=feval(x,y,f)
[z]=feval(x,f)

Arguments

x,y

two vectors

f

function or character string (for Fortran or C call)

Description

Multiple evaluation of a function for one or two arguments of vector type :

z=feval(x,f)

returns the vector z defined by z(i)=f(x(i))

z=feval(x,y,f)

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)

Examples

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')

See Also

  • evstr — evaluation of expressions
  • horner — polynomial/rational evaluation
  • execstr — execute Scilab code in strings
  • external — Scilab Object, external function or routine
  • link — dynamic linker
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Last updated:
Thu May 12 11:44:12 CEST 2011