From e8f81eb1d126e37dc5b57e796fd8ee5e10123312 Mon Sep 17 00:00:00 2001
From: Meghan Denny <hello@nektro.net>
Date: Sun, 28 Jan 2024 00:37:44 -0800
Subject: [PATCH] add rawInt

---
 src/lib.zig    |  2 ++
 src/rawInt.zig | 41 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 43 insertions(+)
 create mode 100644 src/rawInt.zig

diff --git a/src/lib.zig b/src/lib.zig
index c50f4245830ad0f085ab63e7eb8230fd48e60c07..cd1c3aca7fb9f709471919ca0d6d745a238a2d5d 100644
--- a/src/lib.zig
+++ b/src/lib.zig
@@ -89,3 +89,5 @@ pub fn fd_realpath(fd: std.os.fd_t) ![std.fs.MAX_PATH_BYTES:0]u8 {
         else => @compileError("not implemented!"),
     }
 }
+
+pub usingnamespace @import("./rawInt.zig");
diff --git a/src/rawInt.zig b/src/rawInt.zig
new file mode 100644
index 0000000000000000000000000000000000000000..3ff83dff13bc2e072251ef39a7e90d5aa5bf5945
--- /dev/null
+++ b/src/rawInt.zig
@@ -0,0 +1,41 @@
+const std = @import("std");
+const string = []const u8;
+const extras = @import("./lib.zig");
+const builtin = @import("builtin");
+const native_endian = builtin.target.cpu.arch.endian();
+
+pub fn rawInt(comptime T: type, comptime literal: comptime_int) T {
+    comptime std.debug.assert(@typeInfo(T).Int.bits % 8 == 0);
+    return switch (native_endian) {
+        .Little => @byteSwap(@as(T, literal)),
+        .Big => @compileError("unreachable"),
+    };
+}
+
+test {
+    const bytes = std.mem.toBytes(rawInt(u16, 0x4e5a));
+    try std.testing.expect(bytes[0] == 0x4e);
+}
+test {
+    const bytes = std.mem.toBytes(rawInt(u16, 0x4e5a));
+    try std.testing.expect(bytes[0] == 0x4e);
+    try std.testing.expect(bytes[1] == 0x5a);
+}
+test {
+    const bytes = std.mem.toBytes(rawInt(u32, 0x4e5a7da9));
+    try std.testing.expect(bytes[0] == 0x4e);
+    try std.testing.expect(bytes[1] == 0x5a);
+    try std.testing.expect(bytes[2] == 0x7d);
+    try std.testing.expect(bytes[3] == 0xa9);
+}
+test {
+    const bytes = std.mem.toBytes(rawInt(u64, 0x4e5a7da9f3f1d132));
+    try std.testing.expect(bytes[0] == 0x4e);
+    try std.testing.expect(bytes[1] == 0x5a);
+    try std.testing.expect(bytes[2] == 0x7d);
+    try std.testing.expect(bytes[3] == 0xa9);
+    try std.testing.expect(bytes[4] == 0xf3);
+    try std.testing.expect(bytes[5] == 0xf1);
+    try std.testing.expect(bytes[6] == 0xd1);
+    try std.testing.expect(bytes[7] == 0x32);
+}
-- 
2.54.0