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Introduce EIGEN_PI, get rid of M_PI and acos(-1.0)

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This commit is contained in:
Gael Guennebaud
2015-06-10 17:12:10 +02:00
parent 9756c7fb4d
commit d93ba137f2
6 changed files with 29 additions and 31 deletions
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6
Eigen/src/Core/MathFunctions.h
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@@ -10,6 +10,9 @@
#ifndef EIGEN_MATHFUNCTIONS_H
#define EIGEN_MATHFUNCTIONS_H
// source: http://www.geom.uiuc.edu/~huberty/math5337/groupe/digits.html
#define EIGEN_PI 3.141592653589793238462643383279502884197169399375105820974944592307816406
namespace Eigen {
// On WINCE, std::abs is defined for int only, so let's defined our own overloads:
@@ -415,8 +418,7 @@ struct round_retval
EIGEN_DEVICE_FUNC
static inline RealScalar run(const Scalar& x)
{
const double pi = std::acos(-1.0);
return (x < 0.0) ? pi : 0.0; }
return (x < 0.0) ? EIGEN_PI : 0.0; }
};
template<typename Scalar>