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25
26## -*- texinfo -*-
27## @deftypefn {} {} mustBeGreaterThanOrEqual (@var{x}, @var{c})
28##
29## Require that input @var{x} is greater than or equal to @var{c}.
30##
31## Raise an error if any element of the input @var{x} is not greater than
32## or equal to @var{c}, as determined by @code{@var{x} >= @var{c}}.
33##
34## @seealso{mustBeGreaterThan, mustBeLessThanOrEqual, ge}
35## @end deftypefn
36
37function mustBeGreaterThanOrEqual (x, c)
38
39  if (nargin != 2)
40    print_usage ();
41  endif
42
43  tf = (x >= c)(:);
44  if (! all (tf))
45    label = inputname (1);
46    if (isempty (label))
47      label = "input";
48    endif
49    bad_idx = find (! tf);
50    try
51      bad_val = x(bad_idx);
52      errmsg = sprintf ("%s must be greater than or equal to %f; found %d elements that were not: values %s", ...
53                        label, c, numel (bad_idx), mat2str (bad_val));
54    catch
55      errmsg = sprintf ("%s must be greater than or equal to %f; found %d elements that were not: indexes %s", ...
56                        label, c, numel (bad_idx), mat2str (bad_idx));
57    end_try_catch
58    error (errmsg);
59  endif
60
61endfunction
62
63
64%!test
65%! mustBeGreaterThanOrEqual (42, 0);
66%! mustBeGreaterThanOrEqual (Inf, 9999);
67%! mustBeGreaterThanOrEqual (42, 42);
68%! mustBeGreaterThanOrEqual (Inf, Inf);
69
70%!error <Invalid call> mustBeGreaterThanOrEqual ()
71%!error <Invalid call> mustBeGreaterThanOrEqual (1)
72%!error <Invalid call> mustBeGreaterThanOrEqual (1,2,3)
73%!error <must be greater than or equal to 2> mustBeGreaterThanOrEqual (1, 2)
74%!error <must be greater than or equal to 0> mustBeGreaterThanOrEqual (NaN, 0)
75