diff options
| author |  Antonio Sanchez <cantonios@google.com> | 2020-12-11 14:34:31 -0800 |
|---|---|---|
| committer | Antonio Sanchez <cantonios@google.com> | 2020-12-11 14:34:31 -0800 |
| commit | c6efc4e0ba4b9acb8f99e6e976d4853bedc21db5 (patch) | |
| tree | 2324384da59139bc1d91f25e3283d6b5417b046e /Eigen/src/Core/MathFunctions.h | |
| parent | e82722a4a7d69c31155c0de9ccee2c955323b620 (diff) | |
Replace M_LOG2E and M_LN2 with custom macros.
For these to exist we would need to define `_USE_MATH_DEFINES` before
`cmath` or `math.h` is first included. However, we don't
control the include order for projects outside Eigen, so even defining
the macro in `Eigen/Core` does not fix the issue for projects that
end up including `<cmath>` before Eigen does (explicitly or transitively).
To fix this, we define `EIGEN_LOG2E` and `EIGEN_LN2` ourselves.
Diffstat (limited to 'Eigen/src/Core/MathFunctions.h')
| -rw-r--r-- | Eigen/src/Core/MathFunctions.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/Eigen/src/Core/MathFunctions.h b/Eigen/src/Core/MathFunctions.h index db27670be..3cf91bdb6 100644 --- a/Eigen/src/Core/MathFunctions.h +++ b/Eigen/src/Core/MathFunctions.h @@ -10,9 +10,11 @@ #ifndef EIGEN_MATHFUNCTIONS_H #define EIGEN_MATHFUNCTIONS_H -// source: http://www.geom.uiuc.edu/~huberty/math5337/groupe/digits.html // TODO this should better be moved to NumTraits -#define EIGEN_PI 3.141592653589793238462643383279502884197169399375105820974944592307816406L +// Source: WolframAlpha +#define EIGEN_PI 3.141592653589793238462643383279502884197169399375105820974944592307816406L +#define EIGEN_LOG2E 1.442695040888963407359924681001892137426645954152985934135449406931109219L +#define EIGEN_LN2 0.693147180559945309417232121458176568075500134360255254120680009493393621L namespace Eigen { |