| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // Code on Windows expects to be able to do: |
| // |
| // #define _USE_MATH_DEFINES |
| // #include <math.h> |
| // |
| // and receive the definitions of mathematical constants, even if <math.h> |
| // has previously been included. Make sure that works. |
| // |
| |
| #ifdef _MSC_VER |
| # include <math.h> |
| # define _USE_MATH_DEFINES |
| # include <math.h> |
| |
| # ifndef M_PI |
| # error M_PI not defined |
| # endif |
| #endif |
