| 1 | const std = @import("std"); |
| 2 | const string = []const u8; |
| 3 | const extras = @import("./lib.zig"); |
| 4 | const rawIntBytes = extras.rawIntBytes; |
| 5 | const digits = "0123456789abcdef"; |
| 6 | |
| 7 | const alphabet = blk: { |
| 8 | var data: [512]u8 = @splat('0'); |
| 9 | for (0..16) |m| { |
| 10 | for (0..16) |n| { |
| 11 | data[(m * 16 + n) * 2 + 0] = digits[m]; |
| 12 | data[(m * 16 + n) * 2 + 1] = digits[n]; |
| 13 | } |
| 14 | } |
| 15 | const result = data; |
| 16 | break :blk result; |
| 17 | }; |
| 18 | |
| 19 | pub fn to_hex(array: anytype) [array.len * 2]u8 { |
| 20 | var res: [array.len * 2]u8 = undefined; |
| 21 | for (&array, 0..) |x, i| res[i * 2 ..][0..2].* = alphabet[@as(usize, x) * 2 ..][0..2].*; |
| 22 | return res; |
| 23 | } |
| 24 | |
| 25 | pub fn to_HEX(array: anytype) [array.len * 2]u8 { |
| 26 | var res: [array.len * 2]u8 = undefined; |
| 27 | for (&array, 0..) |x, i| res[i * 2 ..][0..2].* = alphabet[@as(usize, x) * 2 ..][0..2].*; |
| 28 | for (&res) |*x| x.* = std.ascii.toUpper(x.*); |
| 29 | return res; |
| 30 | } |
| 31 | |
| 32 | test { |
| 33 | try std.testing.expect(std.mem.eql(u8, &to_hex(rawIntBytes(u64, 0x4e5a7da9f3f1d132)), "4e5a7da9f3f1d132")); |
| 34 | } |
| 35 | test { |
| 36 | try std.testing.expect(std.mem.eql(u8, &to_hex(rawIntBytes(u64, 0x4e5a7da9f3f1d132)), "4E5A7dA9F3F1D132")); |
| 37 | } |