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pytorch/c10/util/MathConstants.cpp
Peter Bell 8acf0e62d0 Use c10 math constants consistently in Math.h (#91967)
On MSVC the `M_` constants are hidden behind the `USE_MATH_DEFINES` macro, so
it's better to avoid them in headers otherwise the include order can break
compilation.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/91967
Approved by: https://github.com/malfet
2023-01-12 11:53:52 +00:00

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C++

// define constants like M_PI and C keywords for MSVC
#ifdef _MSC_VER
#ifndef _USE_MATH_DEFINES
#define _USE_MATH_DEFINES
#endif
#endif
#include <c10/util/MathConstants.h>
// NOLINTNEXTLINE(modernize-deprecated-headers)
#include <math.h>
static_assert(M_PI == c10::pi<double>, "c10::pi<double> must be equal to M_PI");
static_assert(
M_SQRT1_2 == c10::frac_sqrt_2<double>,
"c10::frac_sqrt_2<double> must be equal to M_SQRT1_2");