feat: initial release

Assisted-by: GLM 5.3 Flash

signal/float32_test.go

@@ -0,0 +1,26 @@
+// Copyright (c) 2026 Petr Balvín <opensource@petrbalvin.org> (https://petrbalvin.org)
+// SPDX-License-Identifier: MIT
+
+package signal
+
+import (
+	"testing"
+
+	"sourcedock.dev/petrbalvin/tensor/internal/core"
+)
+
+// TestFloat32FFT checks that the transform computes in float64 from
+// float32 inputs.
+func TestFloat32FFT(t *testing.T) {
+	a, err := core.FromFloat32s([]float32{1, 1, 1, 1}, 4)
+	if err != nil {
+		t.Fatal(err)
+	}
+	spec, err := FFT(a)
+	if err != nil {
+		t.Fatalf("FFT float32: %v", err)
+	}
+	if v := spec.ComplexAt(0); v != 4 {
+		t.Fatalf("FFT DC: %v", v)
+	}
+}