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function selectopinfo (op,optype)
%GRB.SELECTOPINFO list the details of a GraphBLAS select operator.
%
% GrB.selectopinfo
% GrB.selectopinfo (op)
% GrB.selectopinfo (op, optype)
%
% For GrB.selectop(op), the op must be one of the following strings.
% Some of the operators have equivalent synonyms.
%
% op built-in equivalent
% -------- -----------------
% 'tril' C = tril (A,b)
% 'triu' C = triu (A,b)
% 'diag' C = diag (A,b)
% 'offdiag' C = entries not in diag(A,b)
% 'rowne' C = A ; C (b,:) = 0
% 'rowle' C = A ; C (b+1:end,:) = 0
% 'rowgt' C = A ; C (1:b) = 0
% 'colne' C = A ; C (:,b) = 0
% 'colle' C = A ; C (:,b+1:end) = 0
% 'colgt' C = A ; C (:,1:b) = 0
% '~=0' 'nonzero' C = A (A ~= 0)
% '==0' 'zero' C = A (A == 0)
% '>0' 'positive' C = A (A > 0)
% '>=0' 'nonnegative' C = A (A >= 0)
% '<0' 'negative' C = A (A < 0)
% '<=0' 'nonpositive' C = A (A <= 0)
% '~=' C = A (A ~= b)
% '==' C = A (A == b)
% '>' C = A (A > b)
% '>=' C = A (A >= b)
% '<' C = A (A < b)
% '<=' C = A (A <= b)
%
% Example:
%
% GrB.selectopinfo ;
% GrB.selectopinfo ('tril') ;
%
% See also GrB.binopinfo, GrB.descriptorinfo, GrB.monoidinfo,
% GrB.semiringinfo, GrB.unopinfo.
% SuiteSparse:GraphBLAS, Timothy A. Davis, (c) 2017-2022, All Rights Reserved.
% SPDX-License-Identifier: Apache-2.0
if (nargin == 0)
help GrB.selectopinfo
elseif (nargin == 1)
gbselectopinfo (op) ;
else
gbselectopinfo (op, optype) ;
end
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