Comments (1)
Hi,
You can create loops with CppADCodeGen.
Unfortunately, they cannot be defined explicitly.
CppADCodeGen can, however, attempt to detect these loops (and reuse temporary variables) if you provide some hints to CppADCodeGen.
The key method is:
ModelCSourceGen<double> compModelH(fun, "model");
compModelH.setRelatedDependents(relatedDep);
CppadCodeGen will detect and then create loops in the generated source code if each iteration is independent, that is, if the results from one iteration are not used by the next to determine dependent variable. That is, if it is possible to write something like:
for (i=0; i<n; ++i) y[i] = f(x, i)
Please see an example at:
https://github.com/joaoleal/CppADCodeGen/blob/master/example/patterns.cpp
Note that the model used in this example could have been writen in a for
loop.
There are some tests with additional (not so easy to read) examples at:
https://github.com/joaoleal/CppADCodeGen/tree/master/test/cppad/cg/patterns
An alternative way of reducing the amount of source code is by creating an atomic function with the body of the for
loop.
There are some tests using atomic functions at:
https://github.com/joaoleal/CppADCodeGen/tree/master/test/cppad/cg/models
from cppadcodegen.
Related Issues (20)
- CppADCodeGen support for Eigen `.transpose()` operation HOT 6
- Found CppAD version '' but at least version '20200000.1' is required HOT 5
- Loops reusing intermediate results HOT 1
- Using LLVM to improve CppAD HOT 4
- Question about wrong type argument error
- Examples on using CppADCodeGen with Eigen HOT 5
- Use CppADCodeGen with variable number of independent variable arrays HOT 2
- GreaterThanZero cannot be called for non-parameters for eigen determinant HOT 2
- Code generation with if/else statements HOT 18
- Large computational graphs fail at link time HOT 4
- cppad_ipopt dependency HOT 3
- Calling CppAD::ipopt::solve from CppADCodeGen HOT 8
- How to get the value of a CppADCodeGen scalar type HOT 1
- Generating Jacobians as Tensors HOT 12
- icpc build fails for dynamic_linux.cpp example HOT 1
- make build_tests fails HOT 1
- Supporting runtime compilation and dynamic linking in MacOSX M1,2 chips HOT 2
- model->Domain() returns size for previous model
- Running the test program Jacobian module listwith cppAD library gives a lot of errors HOT 6
- error when complie function library
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from cppadcodegen.