From 135c8751041961ef7f66502926d770b93539c252 Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Sat, 21 Mar 2026 14:45:57 +0100
Subject: iterators and fill ops

---
 modules/codec/c++/math.hpp   | 20 ++++++++++++++++++++
 modules/codec/tests/math.cpp | 13 +++++++++++++
 2 files changed, 33 insertions(+)

(limited to 'modules')

diff --git a/modules/codec/c++/math.hpp b/modules/codec/c++/math.hpp
index d110b64..7524265 100644
--- a/modules/codec/c++/math.hpp
+++ b/modules/codec/c++/math.hpp
@@ -3,7 +3,16 @@
 #include "data_math.hpp"
 
 namespace saw {
+template<uint64_t D>
+class iterator final {
+public:
+	template<typename Func
+	void apply(Func&& func){
+	/// TODO !!!!	
+	}
+};
 namespace math {
+
 /*
 template<typename T, typename Encoding = FORSTIO_DEFAULT_DATA_ENCODING>
 data<typename T::InnerType,Encoding> norm_2(const data<T,Encoding>& d){
@@ -149,5 +158,16 @@ data<schema::Vector<T,D>,Encoding> scale(
 	}
 	return sc_vec;
 }
+
+template<typename T, uint64_t... Ds, typename Encoding = FORSTIO_DEFAULT_DATA_ENCODING>
+data<schema::Tensor<T,Ds...>, Encoding> fill(
+	const data<T,Encoding>& filler){
+	data<schema::Tensor<T,Ds...>, Encoding> tbf;
+
+	iterator<sizeof...(Ds)>::apply([&](const auto& index){
+		tbf.at(index) = filler;
+	}, {}, {{Ds...}});
+	return tbf;
+}
 }
 }
diff --git a/modules/codec/tests/math.cpp b/modules/codec/tests/math.cpp
index 63b6d2b..5f4de92 100644
--- a/modules/codec/tests/math.cpp
+++ b/modules/codec/tests/math.cpp
@@ -28,6 +28,19 @@ SAW_TEST("Math/Tensor Construction"){
 	// data<sch::Vector<sch::Int32,3u>> b{{{1,3,5}}};
 }
 
+SAW_TEST("Math/Tensor Fill"){
+	using namespace saw;
+
+	auto tensor = math::fill<sch::Float64,2u,2u>({2.5});
+
+	bool cf{true};
+	for(uint64_t i = 0u; i < 2u; ++i){
+		for(uint64_t j = 0u; j < 2u; ++j){
+			SAW_EXPECT((tensor.at({{i,j}}).get() == 2.5), "Wasn't filled with value 2.5");
+		}
+	}
+}
+
 SAW_TEST("Math/Tensor"){
 	using namespace saw;
 
-- 
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