diff --git a/aidge_core/export_utils/__init__.py b/aidge_core/export_utils/__init__.py
index b17ff90d61131daff069fe201589ba578f221a2b..72472eee0b6850ea76c70253e4fa953ac5785f84 100644
--- a/aidge_core/export_utils/__init__.py
+++ b/aidge_core/export_utils/__init__.py
@@ -3,4 +3,4 @@ from .code_generation import generate_file, generate_str, copy_file
from .export_registry import ExportLib
from .scheduler_export import scheduler_export
from .tensor_export import tensor_to_c, generate_input_file
-from .generate_main import generate_main_cpp
+from .generate_main import generate_main_cpp, generate_main_compare_cpp
diff --git a/aidge_core/export_utils/generate_main.py b/aidge_core/export_utils/generate_main.py
index 58946136fbdbeb35a0919d656efcc1de587e5136..57fc68bca489a69d7a2c5ec13b920e94f83ebcd6 100644
--- a/aidge_core/export_utils/generate_main.py
+++ b/aidge_core/export_utils/generate_main.py
@@ -62,3 +62,70 @@ def generate_main_cpp(export_folder: str, graph_view: aidge_core.GraphView, inpu
outputs_dtype=outputs_dtype,
outputs_size=outputs_size
)
+
+
+def generate_main_compare_cpp(export_folder: str, graph_view: aidge_core.GraphView, inputs_tensor=None) -> None:
+ """
+ Generate a C++ file to manage the forward pass and compare the output of a model.
+
+ This function extracts details from the :py:class:`aidge_core.graph_view` object, including input and output node names, data types,
+ and tensor sizes. It uses this data to populate a C++ file template (`main.jinja`), creating a file (`main.cpp`)
+ that call the `model_forward` function, which handles data flow and processing for the exported model.
+
+ This function also generate files containing input tensor if they have been set.
+
+ :param export_folder: Path to the folder where the generated C++ file (`main.cpp`) will be saved.
+ :type export_folder: str
+ :param graph_view: An instance of :py:class:`aidge_core.graph_view`, providing access to nodes and
+ ordered input/output data within the computational graph.
+ :type graph_view: aidge_core.graph_view
+ :param inputs_tensor: **For future** argument to provide tensor to use in the main function, not implemented yet!
+ :type inputs_tensor: None
+ :raises RuntimeError: If there is an inconsistency in the output arguments (names, data types, sizes),
+ indicating an internal bug in the graph representation.
+ """
+ outputs_name: list[str] = []
+ outputs_dtype: list[str] = []
+ outputs_size: list[int] = []
+ inputs_name: list[str] = []
+ gv_inputs: list[tuple[aidge_core.Node, int]] = graph_view.get_ordered_inputs()
+ gv_outputs: list[tuple[aidge_core.Node, int]] = graph_view.get_ordered_outputs()
+
+ for in_node, in_idx in gv_inputs:
+ in_node_input, in_node_input_idx = in_node.input(in_idx)
+ in_name = f"{in_node.name()}_input_{in_idx}" if in_node_input is None else f"{in_node_input.name()}_output_{in_node_input_idx}"
+ inputs_name.append(in_name)
+ input_tensor = in_node.get_operator().get_input(in_idx)
+ if input_tensor is None or input_tensor.undefined() or not input_tensor.has_impl():
+ if inputs_tensor is not None:
+ aidge_core.Log.notice("No support for inputs_tensor argument yet.")
+ aidge_core.Log.notice(f"No input tensor set for {in_name}, main generated will not be functionnal after code generation.")
+ else:
+ aidge_core.Log.notice(f"No input tensor set for {in_name}, main generated will not be functionnal after code generation.")
+ else:
+ aidge_core.export_utils.generate_input_file(export_folder=export_folder, array_name=in_name, tensor=input_tensor)
+
+ for out_node, out_id in gv_outputs:
+ out_name = f"{out_node.name()}_output_{out_id}"
+ outputs_name.append(out_name)
+ out_tensor = out_node.get_operator().get_output(out_id)
+ outputs_dtype.append(data_conversion.aidge2c(out_tensor.dtype()))
+ outputs_size.append(out_tensor.size())
+ if out_tensor is None or out_tensor.undefined() or not out_tensor.has_impl():
+ aidge_core.Log.notice(f"No input tensor set for {out_name}, main generated will not be functionnal after code generation.")
+ else:
+ aidge_core.export_utils.generate_input_file(export_folder=export_folder, array_name=out_name+"_expected", tensor=out_tensor)
+
+ if len(outputs_name) != len(outputs_dtype) or len(outputs_name) != len(outputs_size):
+ raise RuntimeError("FATAL: Output args list does not have the same length this is an internal bug.")
+
+ ROOT = Path(__file__).resolve().parents[0]
+ generate_file(
+ str(Path(export_folder) / "main.cpp"),
+ str(ROOT / "templates" / "main_compare.jinja"),
+ func_name="model_forward",
+ inputs_name=inputs_name,
+ outputs_name=outputs_name,
+ outputs_dtype=outputs_dtype,
+ outputs_size=outputs_size
+ )
diff --git a/aidge_core/export_utils/templates/main_compare.jinja b/aidge_core/export_utils/templates/main_compare.jinja
new file mode 100644
index 0000000000000000000000000000000000000000..3cc4c986db66ef0ded3b3f44ba10394b424f3dbd
--- /dev/null
+++ b/aidge_core/export_utils/templates/main_compare.jinja
@@ -0,0 +1,59 @@
+{% set printf_formats = {
+ "double": "%lf",
+ "float": "%f",
+ "int8_t": "%hhd",
+ "int16_t": "%hd",
+ "int32_t": "%d",
+ "int64_t": "%lld",
+ "uint8_t": "%hhu",
+ "uint16_t": "%hu",
+ "uint32_t": "%u",
+ "uint64_t": "%llu"
+} %}
+#include <cstdio> // printf
+#include <cmath> // std::abs
+#include "forward.hpp" // Exported forward
+
+// Inputs
+{% for name in inputs_name %}
+#include "{{ name }}.h"
+{% endfor %}
+
+// Outputs
+{% for name in outputs_name %}
+#include "{{ name }}_expected.h"
+{% endfor %}
+
+int main()
+{
+ // Initialize the output arrays
+ {%- for o in range(outputs_name | length) %}
+ {{ outputs_dtype[o] }}* {{ outputs_name[o] }} = nullptr;
+ {% endfor %}
+
+ const float abs_err = 0.001f;
+ const float rel_err = 0.0001f;
+
+ // Call the forward function
+ {{ func_name }}({{ inputs_name|join(", ") }}{% if inputs_name %}, {% endif %}&{{ outputs_name|join(", &") }});
+
+
+ int nb_identical;
+ int nb_out;
+
+ // Print the results of each output
+ {%- for o in range(outputs_name | length) %}
+ nb_identical = 0;
+ nb_out = 0;
+ printf("{{ outputs_name[o] }}:\n");
+ for (int o = 0; o < {{ outputs_size[o] }}; ++o) {
+ printf("Expected {{ printf_formats[outputs_dtype[o]] }} <-> Predicted {{ printf_formats[outputs_dtype[o]] }}\n", {{ outputs_name[o] }}_expected[o], {{ outputs_name[o] }}[o]);
+ if (std::abs({{ outputs_name[o] }}_expected[o] - {{ outputs_name[o] }}[o]) <= abs_err + rel_err * std::abs({{ outputs_name[o] }}_expected[o]))
+ nb_identical++;
+ nb_out++;
+ }
+ printf("\nNumber of equal outputs: %d / %d\n", nb_identical, nb_out);
+ {% endfor %}
+
+ return 0;
+}