xarraytransposebug.cpp

#include <xtensor/xarray.hpp>
#include <xtensor/xrandom.hpp>
#include <xtensor/xio.hpp>
#include <xtensor/xindexview.hpp>
#include <xtensor-blas/xlinalg.hpp>

#include <iostream>
using namespace std;

void s1()
{
	cout << "\nscenario 1. ==========" << endl;
	xt::xarray<float> x = {{0,1,1,1}};
	x = xt::transpose(x);
	cout << x << endl;
}

void s2()
{
	cout << "\nscenario 2. ==========" << endl;
	xt::xarray<float> tmp = {{0,1,1,1}};
	xt::xarray<float> x = xt::transpose(tmp);
	cout << x << endl;
}

void s3()
{
	cout << "\nscenario 3. ==========" << endl;
	xt::xarray<float> tmp = {{0,1,1,1}};
	auto x = xt::transpose(tmp);
	cout << x << endl;
}

void s4()
{
	cout << "\nscenario 4. ==========" << endl;
	auto x = xt::transpose(xt::xarray<float>({{0,1,1,1}}));
	cout << x << endl;
}

void s5()
{
	cout << "\nscenario 5. ==========" << endl;
	auto x = xt::xarray<float>({{0,1,1,1}});
	x = xt::transpose(x);
	cout << x << endl;
}

int main()
{
	s1();
	s2();
	s3();
	s4();
	s5();
}

This program prints the following on my system.

scenario 1. ==========
{{ 0.},
 { 1.},
 { 1.},
 { 0.}}

scenario 2. ==========
{{ 0.000000e+00},
 { 1.000000e+00},
 { 1.000000e+00},
 { 4.563048e-41}}

scenario 3. ==========
{{ 0.},
 { 1.},
 { 1.},
 { 1.}}

scenario 4. ==========
{{ 0.},
 { 1.},
 { 1.},
 { 1.}}

scenario 5. ==========
{{ 0.000000e+00},
 { 1.000000e+00},
 { 1.000000e+00},
 { 4.563048e-41}}