From 081fc18575be18ddedf603638793152d5ddc83b6 Mon Sep 17 00:00:00 2001
From: hachem <im@hachem.wtf>
Date: Sun, 6 Sep 2026 19:42:59 +0200
Subject: add: custom gates from matrices and composites

---
 include/core/custom_gate.h | 56 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 56 insertions(+)
 create mode 100644 include/core/custom_gate.h

(limited to 'include/core')

diff --git a/include/core/custom_gate.h b/include/core/custom_gate.h
new file mode 100644
index 0000000..bc22956
--- /dev/null
+++ b/include/core/custom_gate.h
@@ -0,0 +1,56 @@
+#pragma once
+
+#include <stddef.h>
+
+#include "core/quantum_components.h"
+#include "maths/matrix.h"
+
+enum PsiCompositeOp
+{
+	PSI_OP_H,
+	PSI_OP_X,
+	PSI_OP_Y,
+	PSI_OP_Z,
+	PSI_OP_S,
+	PSI_OP_T,
+	PSI_OP_CNOT,
+	PSI_OP_CZ,
+	PSI_OP_SWAP,
+	PSI_OP_CCNOT,
+	PSI_OP_CSWAP,
+};
+
+struct PsiCompositeGateOp
+{
+	enum PsiCompositeOp op;
+	size_t targets[3];
+	size_t target_count;
+};
+
+enum PsiCustomGateKind
+{
+	PSI_CUSTOM_GATE_MATRIX,
+	PSI_CUSTOM_GATE_COMPOSITE,
+};
+
+struct PsiCustomGate
+{
+	const char *name;
+	size_t num_qubits;
+	enum PsiCustomGateKind kind;
+	union
+	{
+		struct PsiMatrix matrix;
+		struct
+		{
+			struct PsiCompositeGateOp *ops;
+			size_t count;
+		} composite;
+	} definition;
+};
+
+struct PsiCustomGate psi_new_custom_gate_from_matrix(const char *name, struct PsiMatrix matrix);
+struct PsiCustomGate psi_new_custom_gate_from_composite(const char *name, size_t num_qubits, const struct PsiCompositeGateOp *ops, size_t op_count);
+void psi_free_custom_gate(struct PsiCustomGate *gate);
+
+struct PsiQuantumGate psi_to_quantum_gate(struct PsiCustomGate gate);
-- 
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