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CodeGeneration

  

Matlab

  

translate Maple code to MATLAB(R) code

 

Calling Sequence

Parameters

Description

Examples

Calling Sequence

Matlab(x, cgopts)

Parameters

x

-

expression, list, rtable, procedure or module

cgopts

-

(optional) one or more CodeGeneration options

Description

• 

The Matlab command translates Maple code to MATLAB® code.

  

- If the parameter x is an algebraic expression, then a MATLAB® statement assigning the expression to a variable is generated.

  

- If x is a list, rtable or Maple Array of algebraic expressions, then a sequence of MATLAB® statements assigning the elements to a MATLAB® array is produced.

  

- If x is a list of equations nm=expr where nm is a name and expr is an algebraic expression, this is understood to mean a sequence of assignment statements.  In this case, the equivalent sequence of MATLAB® assignment statements is generated.

  

- If x is a procedure, then a MATLAB® module is generated containing a function equivalent to the procedure.

  

- If x is a module, then the closest equivalent MATLAB® code is generated, as described on the MatlabDetails help page.

• 

The parameter cgopts may include one or more CodeGeneration options, as described in CodeGenerationOptions.

• 

For more information about how the CodeGeneration package translates Maple code to other languages, see Translation Details. For more information about translation to MATLAB® in particular, see MatlabDetails.

Examples

For a description of the options used in the following examples, see CodeGenerationOptions.

withCodeGeneration:

Translate a simple expression and assign to the name ``w'' in the target code.

Matlabx+yz2xz,resultname=w

w = -2 * x * z + y * z + x;

Translate a list and assign to an array with name ``w'' in the target code.

Matlabx,2y,5,z,resultname=w

w = [x 2 * y; 5 z;];

Translate a computation sequence.  Optimize the input first.

css=1.0+x,t=lnsⅇx,r=ⅇx+xt:

Matlabcs,optimize

s = 0.10e1 + x;
t1 = log(s);
t2 = exp(-x);
t = t1 * t2;
r = x * t + t2;

Declare that x is a float and y is an integer.  Return the result in a string.

sMatlabx+y+1,declare=x::float,y::integer,output=string

s:=cg = x + y + 0.1e1;

(1)

Translate a procedure.  Assume that all untyped variables have type integer.

f := proc(x, y, z) return x*y-y*z+x*z; end proc:

Matlabf,defaulttype=integer

function freturn = f(x, y, z)
  freturn = x * y - y * z + x * z;

Translate a procedure containing an implicit return.  A new variable is created to hold the return value.

f := proc(n)
  local x, i;
  x := 0.0;
  for i to n do
    x := x + i;
  end do;
end proc:

Matlabf

function freturn = f(n)
  x = 0.0e0;
  for i = 1:n
    x = x + i;
    cgret = x;
  end
  freturn = cgret;

Translate a procedure accepting an Array as a parameter.  Note that the indices are renumbered so that the MATLAB® array starts at index 1.

f := proc(x::Array(numeric, 5..7))
  return x[5]+x[6]+x[7];
end proc:

Matlabf

function freturn = f(x)
  freturn = x(1) + x(2) + x(3);

Translate a module with one exported and one local procedure.

m := module() export p; local q;
    p := proc(x,y) if y>0 then trunc(x); else ceil(x); end if; end proc:
    q := proc(x) sin(x)^2; end proc:
end module:

Matlabm,resultname=t0

% m/p.m:
function preturn = p(x, y)
  if (0 < y)
    preturn = fix(x);
  else
    preturn = ceil(x);
  end

% m/private/q.m:
function qreturn = q(x)
  qreturn = sin(x) ^ 2;

Translate a linear combination of hyperbolic trigonometric functions.

Matlab2coshx7tanhx

cg0 = 0.2e1 * cosh(x) - 0.7e1 * tanh(x);

Translate a procedure with no return value containing a printf statement.

f := proc(a::integer, p::integer)
  printf("The integer remainder of %d divided by %d is: %d\n", a, p, irem(a, p));
end proc:

Matlabf

function freturn = f(a, p)
  disp(sprintf('The integer remainder of %d divided by %d is: %d
',a,p,mod(a, p)));

See Also

CodeGeneration

CodeGenerationOptions

MatlabDetails

trademark

TranslationDetails

 


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