Singular Manual: parallelTestAND

| #### D.2.7.4 parallelTestAND Procedure from library `parallel.lib` (see parallel_lib). Usage: parallelTestAND(commands, arguments[, timeout]); commands list or string, arguments list, timeout int Return: 1, if commands[i] applied to arguments[i] is not equal to zero for all i = 1, ..., size(arguments); 0, otherwise. An optional timeout in ms can be provided. Default is 0 which disables the timeout. In case of timeout, -1 is returned. Note: The entries of the list commands must be strings. The entries of the list arguments must be lists. commands[i] applied to arguments[i] must evaluate to an integer for i = 1, ..., size(arguments). As a shortcut, `commands` can be a string. This is synonymous to providing a list of `size(arguments)` copies of this string. Example:
    LIB "parallel.lib";
    ring R = 0, (x,y,z), dp;
    ideal I = x, y, z;
    intvec v = 0:3;
    list l = list(I, v);
    module m1 = x*gen(1);
    module m2;
    string command = "size";
    list arguments1 = list(list(I), list(v), list(l), list(m1));
    list arguments2 = list(list(I), list(v), list(l), list(m2));
    // test if all the arguments have non-zero size
    parallelTestAND(command, arguments1);
    ==> 1
    parallelTestAND(command, arguments2);
    ==> 0
See also: parallelTestOR; tasks_lib.

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