Sum of a series: Difference between revisions

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@@ Line 3,379: / Line 3,379: @@
 =={{header|Zig}}==
+{{Works with|Zig|0.11.0}}
 <syntaxhighlight lang="zig">const std = @import("std");
-fn f(x: i64) f64 {
+fn f(x: u64) f64 {
-    return 1/@intToFloat(f64, x*x);
+    return 1 / @as(f64, @floatFromInt(x * x));
 }
-fn S(fun: fn(i64) f64, n: i64) f64 {
+fn sum(comptime func: fn (u64) f64, n: u64) f64 {
     var s: f64 = 0.0;
-    var i: i64 = n;
+    var i: u64 = n;
+    while (i != 0) : (i -= 1)
+        s += func(i);
-    while (i > 0) : (i -= 1) {
-        s += fun(i);
-    }
     return s;
 }
-pub fn main() !void
+pub fn main() !void {
-{
     const stdout = std.io.getStdOut().writer();
-    try stdout.print("S_1000 = {d:.15}\n", .{S(f, 1000)});
+    try stdout.print("S_1000 = {d:.15}\n", .{sum(f, 1000)});
-}</syntaxhighlight>
+}</syntaxhighlight>{{out}}
-{{out}}
 <pre>S_1000 = 1.643934566681560</pre>