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Math: integer power function

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This commit is contained in:
Antonin Portelli 2014-04-15 17:30:51 +01:00
parent 086c49237d
commit 2af61252b6
1 changed files with 32 additions and 6 deletions
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38
lib/Math.hpp
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@ -26,6 +26,38 @@
BEGIN_NAMESPACE BEGIN_NAMESPACE
/******************************************************************************
* Custom math functions *
******************************************************************************/
#define MATH_NAMESPACE Math
namespace MATH_NAMESPACE
{
// integer power function
template <unsigned int n, typename T>
typename std::enable_if<(n == 0), T>::type pow(const T x __unused)
{
return 1;
}
template <unsigned int n, typename T>
typename std::enable_if<(n == 1), T>::type pow(const T x)
{
return x;
}
template <unsigned int n, typename T>
typename std::enable_if<(n > 1), T>::type pow(const T x)
{
return x*pow<n-1>(x);
}
// Constants
const double pi = 3.1415926535897932384626433832795028841970;
const double e = 2.7182818284590452353602874713526624977572;
}
/****************************************************************************** /******************************************************************************
* Standard C functions * * Standard C functions *
******************************************************************************/ ******************************************************************************/
@ -93,12 +125,6 @@ DECL_STD_FUNC(fmin)
// Absolute value // Absolute value
DECL_STD_FUNC(fabs) DECL_STD_FUNC(fabs)
namespace STDMATH_NAMESPACE
{
// Constants
const double pi = 3.1415926535897932384626433832795028841970;
}
END_NAMESPACE END_NAMESPACE
#endif // Latan_Math_hpp_ #endif // Latan_Math_hpp_