Mercurial > hg > octave-lyh
comparison scripts/general/is_square.m @ 26:e90ea9cbd4de
[project @ 1993-08-10 20:56:55 by jwe]
Initial revision
| author | jwe |
|---|---|
| date | Tue, 10 Aug 1993 20:56:55 +0000 |
| parents | |
| children | 98eb51c870b2 |
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| 25:1d4cfd89ebb6 | 26:e90ea9cbd4de |
|---|---|
| 1 function retval = is_square (x) | |
| 2 | |
| 3 # usage: is_square (x) | |
| 4 # | |
| 5 # If x is square, then return value is the dimension of x. | |
| 6 # otherwise, returns a value of 0 | |
| 7 # | |
| 8 # See also: size, rows, columns, length, is_matrix, is_scalar, is_vector | |
| 9 | |
| 10 if (nargin == 1) | |
| 11 [nr, nc] = size (x); | |
| 12 if( nr == nc) | |
| 13 retval = nr; | |
| 14 else | |
| 15 retval = 0; | |
| 16 endif | |
| 17 else | |
| 18 error ("usage: is_square (x)"); | |
| 19 endif | |
| 20 | |
| 21 endfunction |