initial commit

Package.swift

@@ -0,0 +1,38 @@
+// swift-tools-version: 6.0
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+let package = Package(
+    name: "SwiftPFFFT",
+    products: [
+        .library(
+            name: "PFFFT",
+            targets: ["PFFFT", "PFFFTLib"]
+        ),
+    ],
+    dependencies: [
+        .package(url: "https://github.com/apple/swift-numerics", from: "1.0.0"),
+    ],
+    targets: [
+        .target(
+            name: "PFFFTLib",
+            publicHeadersPath: "include",
+            cSettings: [
+                .define("PFFFT_SCALVEC_ENABLED", to: "1"),
+                .define("_USE_MATH_DEFINES"),
+                .define("NDEBUG"),
+                .unsafeFlags(["-O3"]),
+            ]
+        ),
+        .target(
+            name: "PFFFT",
+            dependencies: ["PFFFTLib", .product(name: "Numerics", package: "swift-numerics")]
+        ),
+        .testTarget(
+            name: "PFFFTTests",
+            dependencies: ["PFFFT"]
+        ),
+    ],
+    cLanguageStandard: .c99
+)