From 14b6fb88fb98580f09fc9092493d537ef3810d77 Mon Sep 17 00:00:00 2001
From: Kate Tsuyu <kate@kxt.io>
Date: Fri, 28 Aug 2020 09:55:50 -0400
Subject: [PATCH] std.math.divCeil: handle floats correctlier

---
 lib/std/math.zig | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/std/math.zig b/lib/std/math.zig
index 3daf643a79..fef33ead9b 100644
--- a/lib/std/math.zig
+++ b/lib/std/math.zig
@@ -624,7 +624,10 @@ fn testDivFloor() void {
 pub fn divCeil(comptime T: type, numerator: T, denominator: T) !T {
     @setRuntimeSafety(false);
     if (numerator <= 0) return divTrunc(T, numerator, denominator);
-    if (@typeInfo(T) == .Float) return @ceil(numerator / denominator);
+    if (@typeInfo(T) == .Float) {
+        if (denominator == 0) return error.DivisionByZero;
+        return @ceil(numerator / denominator);
+    }
     return (try divFloor(T, numerator - 1, denominator)) + 1;
 }