1 files changed, 29 insertions, 0 deletions
diff --git a/contrib/llvm-project/compiler-rt/lib/builtins/powidf2.c b/contrib/llvm-project/compiler-rt/lib/builtins/powidf2.c
new file mode 100644
index 000000000000..81058af50829
--- /dev/null
+++ b/contrib/llvm-project/compiler-rt/lib/builtins/powidf2.c
@@ -0,0 +1,29 @@
+//===-- powidf2.cpp - Implement __powidf2 ---------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+//
+// This file implements __powidf2 for the compiler_rt library.
+//
+//===----------------------------------------------------------------------===//
+
+#include "int_lib.h"
+
+// Returns: a ^ b
+
+COMPILER_RT_ABI double __powidf2(double a, int b) {
+  const int recip = b < 0;
+  double r = 1;
+  while (1) {
+    if (b & 1)
+      r *= a;
+    b /= 2;
+    if (b == 0)
+      break;
+    a *= a;
+  }
+  return recip ? 1 / r : r;
+}