Switch to i64 for words

02/src/main.zig

@@ -1,7 +1,7 @@
 const std = @import("std");
 const intcode = @import("intcode");
 
-fn run(alloc: *std.mem.Allocator, program: []i32, noun: i32, verb: i32) !i32 {
+fn run(alloc: *std.mem.Allocator, program: []intcode.Word, noun: intcode.Word, verb: intcode.Word) !intcode.Word {
     program[1] = noun;
     program[2] = verb;
 
@@ -10,11 +10,11 @@ fn run(alloc: *std.mem.Allocator, program: []i32, noun: i32, verb: i32) !i32 {
     return program[0];
 }
 
-fn runCopy(alloc: *std.mem.Allocator, program: []i32, noun: i32, verb: i32) !i32 {
-    var memory = try alloc.alloc(i32, program.len);
+fn runCopy(alloc: *std.mem.Allocator, program: []intcode.Word, noun: intcode.Word, verb: intcode.Word) !intcode.Word {
+    var memory = try alloc.alloc(intcode.Word, program.len);
     defer alloc.free(memory);
 
-    std.mem.copy(i32, memory, program);
+    std.mem.copy(intcode.Word, memory, program);
 
     return run(alloc, memory, noun, verb);
 }
@@ -31,14 +31,14 @@ pub fn main() anyerror!void {
     std.debug.warn("Day 2, Part 1: {}\n", try runCopy(alloc, program, 12, 2));
 
     // Part 2: 100*100 = 10,000 combinations to try.
-    var memory: []i32 = try alloc.alloc(i32, program.len);
+    var memory: []intcode.Word = try alloc.alloc(intcode.Word, program.len);
     var done: bool = false;
-    var noun: i32 = 0;
-    var verb: i32 = 0;
+    var noun: intcode.Word = 0;
+    var verb: intcode.Word = 0;
 
     std.debug.warn("Day 2, Part 2: ");
     while (!done) {
-        std.mem.copy(i32, memory, program);
+        std.mem.copy(intcode.Word, memory, program);
         const result = try run(alloc, memory, noun, verb);
 
         // Too high: 250800 (noun=33, verb=76)