From b7f40451844caa81f8ecb233c68777f06232d94c Mon Sep 17 00:00:00 2001
From: jagt <jagt@live.com>
Date: Sun, 20 Mar 2022 20:52:43 +0800
Subject: [PATCH 1/2] add compiler_rt ceilf/ceil/ceill

this should fix stage1 build error with msvc 2019
---
 lib/std/special/compiler_rt.zig | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/lib/std/special/compiler_rt.zig b/lib/std/special/compiler_rt.zig
index 3941918c47..a017266304 100644
--- a/lib/std/special/compiler_rt.zig
+++ b/lib/std/special/compiler_rt.zig
@@ -680,6 +680,10 @@ comptime {
         @export(floor, .{ .name = "floor", .linkage = linkage });
         @export(floorl, .{ .name = "floorl", .linkage = linkage });
 
+        @export(ceilf, .{ .name = "ceilf", .linkage = linkage });
+        @export(ceil, .{ .name = "ceil", .linkage = linkage });
+        @export(ceill, .{ .name = "ceill", .linkage = linkage });
+
         @export(fma, .{ .name = "fma", .linkage = linkage });
         @export(fmaf, .{ .name = "fmaf", .linkage = linkage });
         @export(fmal, .{ .name = "fmal", .linkage = linkage });
@@ -811,6 +815,19 @@ fn floorl(x: c_longdouble) callconv(.C) c_longdouble {
     return math.floor(x);
 }
 
+fn ceilf(x: f32) callconv(.C) f32 {
+    return math.ceil(x);
+}
+fn ceil(x: f64) callconv(.C) f64 {
+    return math.ceil(x);
+}
+fn ceill(x: c_longdouble) callconv(.C) c_longdouble {
+    if (!long_double_is_f128) {
+        @panic("TODO implement this");
+    }
+    return math.ceil(x);
+}
+
 // Avoid dragging in the runtime safety mechanisms into this .o file,
 // unless we're trying to test this file.
 pub fn panic(msg: []const u8, error_return_trace: ?*std.builtin.StackTrace) noreturn {

From 65058ebd72d06ee5f920df3e2c3e68dd77f5fccf Mon Sep 17 00:00:00 2001
From: Andrew Kelley <andrew@ziglang.org>
Date: Sun, 20 Mar 2022 13:29:48 -0700
Subject: [PATCH 2/2] freestanding libc: remove ceil functions

Now that they are in compiler-rt, they can be removed from here.
---
 lib/std/special/c.zig | 19 -------------------
 1 file changed, 19 deletions(-)

diff --git a/lib/std/special/c.zig b/lib/std/special/c.zig
index 326ca3a8a0..d0639463a0 100644
--- a/lib/std/special/c.zig
+++ b/lib/std/special/c.zig
@@ -83,10 +83,6 @@ comptime {
     @export(log10, .{ .name = "log10", .linkage = .Strong });
     @export(log10f, .{ .name = "log10f", .linkage = .Strong });
 
-    @export(ceil, .{ .name = "ceil", .linkage = .Strong });
-    @export(ceilf, .{ .name = "ceilf", .linkage = .Strong });
-    @export(ceill, .{ .name = "ceill", .linkage = .Strong });
-
     @export(fmod, .{ .name = "fmod", .linkage = .Strong });
     @export(fmodf, .{ .name = "fmodf", .linkage = .Strong });
 
@@ -429,21 +425,6 @@ fn log10f(a: f32) callconv(.C) f32 {
     return math.log10(a);
 }
 
-fn ceilf(x: f32) callconv(.C) f32 {
-    return math.ceil(x);
-}
-
-fn ceil(x: f64) callconv(.C) f64 {
-    return math.ceil(x);
-}
-
-fn ceill(x: c_longdouble) callconv(.C) c_longdouble {
-    if (!long_double_is_f128) {
-        @panic("TODO implement this");
-    }
-    return math.ceil(x);
-}
-
 fn fmodf(x: f32, y: f32) callconv(.C) f32 {
     return generic_fmod(f32, x, y);
 }