t_is

t_is(got, expected, prec, msg)

t_is() - Tests if two matrices are identical to some tolerance.

t_is(got, expected, prec, msg)
ok = t_is(got, expected, prec, msg)

Test passes if the maximum difference between corresponding elements of got and expected is less than \(10^{-prec}\).

Inputs:

got (double) – numerical matrix of actual test results
expected (double) – numerical matrix of expected test results
prec (double) – defines the match tolerance, \(10^{-prec}\)
msg (char array) – message to display for this test

Output:

ok (boolean) – (optional) true if test passed, false if failed

Increments the global test count and, if the test passes, then it increments the passed tests count, otherwise increments the failed tests count. Prints “ok” or “not ok” followed by the msg, unless t_begin() was called with input quiet equal true.

The input values can be real or complex, and they can be scalar, vector, or 2-d or higher matrices. If got is a vector or matrix and expected is a scalar or NaN, all elements must match the scalar. NaN values are considered to be equal to each other.

Intended to be called between calls to t_begin() and t_end().

Example:

quiet = 0;
t_begin(5, quiet);
t_ok(pi > 3, 'size of pi');
t_skip(3, 'not yet written');
t_is(2+2, 4, 12, '2+2 still equals 4');
t_end;