Description of min_abs

min_abs_index		Programmers Guide
		Contents \| Index \| Search

Category:algorithms

Component type:function

Prototype

template<class Vec> Vec::size_type min_abs_index(const Vec& x) ;

Description

The location (index) of the element with the minimum absolute value. is the type of the absolute value of its value_type.

Definition

mtl.h

Requirements on types

The vector or matrix must have an associated magnitude_type that
There must be abs() defined for Vector::value_type.
The magnitude type must be LessThanComparible.

Preconditions

Complexity

O(n)

Example

In max_index.cc:

typedef complex<float> c;
typedef external_vec<c> Vec;
  const int N = 5;
  c dx[] = { c(5,-4), c(-3,-2),
             c(5,-4), c(6,0), c(0,8) };
  Vec x(dx, N);
  
  int imax = max_index(x);

Notes

See also