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* Add fixed-size template versions of corner(), start(), end().

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* Use them to write an unrolled path in echelon.cpp, as an
  experiment before I do this LU module.
* For floating-point types, make ei_random() use an amplitude
  of 1.
This commit is contained in:
Benoit Jacob
2008-04-12 17:37:27 +00:00
parent dcebc46cdc
commit ab4046970b
8 changed files with 272 additions and 47 deletions
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11
Eigen/src/Core/MathFunctions.h
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@@ -28,6 +28,11 @@
template<typename T> inline typename NumTraits<T>::Real precision();
template<typename T> inline T ei_random(T a, T b);
template<typename T> inline T ei_random();
template<typename T> inline T ei_random_amplitude()
{
if(NumTraits<T>::HasFloatingPoint) return static_cast<T>(1);
else return static_cast<T>(10);
}
template<> inline int precision<int>() { return 0; }
inline int ei_real(int x) { return x; }
@@ -54,7 +59,7 @@ template<> inline int ei_random(int a, int b)
}
template<> inline int ei_random()
{
return ei_random<int>(-10, 10);
return ei_random<int>(-ei_random_amplitude<int>(), ei_random_amplitude<int>());
}
inline bool ei_isMuchSmallerThan(int a, int, int = precision<int>())
{
@@ -88,7 +93,7 @@ template<> inline float ei_random(float a, float b)
}
template<> inline float ei_random()
{
return ei_random<float>(-10.0f, 10.0f);
return ei_random<float>(-ei_random_amplitude<float>(), ei_random_amplitude<float>());
}
inline bool ei_isMuchSmallerThan(float a, float b, float prec = precision<float>())
{
@@ -122,7 +127,7 @@ template<> inline double ei_random(double a, double b)
}
template<> inline double ei_random()
{
return ei_random<double>(-10.0, 10.0);
return ei_random<double>(-ei_random_amplitude<double>(), ei_random_amplitude<double>());
}
inline bool ei_isMuchSmallerThan(double a, double b, double prec = precision<double>())
{