functions in std.i - e
or edit_times, file, keep_list
or edit_times, file, keep_list, new_times, new_ncycs
edits the records for FILE. The KEEP_LIST is a 0-origin index list
of records to be kept, or nil to keep all records. The NEW_TIMES
array is the list of new time values for the (kept) records, and
the NEW_NCYCS array is the list of new cycle number values for the
(kept) records. Either NEW_TIMES, or NEW_NCYCS, or both, may be
nil to leave the corresponding values unchanged. If non-nil,
NEW_TIMES and NEW_NCYCS must have the same length as KEEP_LIST,
or, if KEEP_LIST is nil, as the original number of records in
the file. If KEEP_LIST, NEW_TIME, and NEW_NCYCS are all omitted
or nil, then edit_times removes records as necessary to ensure
that the remaining records have monotonically increasing times,
or, if no times are present, monotonically increasing ncycs.
(The latest record at any given time/ncyc is retained, and earlier
records are removed.)
In no case does edit_times change the FILE itself; only Yorick's
in-memory model of the file is altered.
builtin function, documented at i0/std.i line 2545
eq_nocopy, y, x
is the same as
except that if x is an array, it is not copied, even if it is
not a temporary (i.e.- an expression). Having multiple variables
reference the same data can be confusing, which is why the default
= operation copies the array. The most important use of eq_nocopy
involves pointers or lists:
always causes the data pointed to by py to be copied, while
eq_nocopy, y, *py
eq_nocopy, z, _car(list)
does not copy the data - often more nearly what you wanted.
Note that scalar int, long, and double variables are always copied,
so you cannot count on eq_nocopy setting up an "equivalence"
builtin function, documented at i0/std.i line 287
Exits the current interpreted *main* program, printing the MSG.
(MSG can be omitted to print a default.)
In the case of exit, the result is equivalent to an immediate
return from every function in the current calling chain.
In the case of error, the result is the same as if an error had
occurred in a compiled routine.
builtin function, documented at i0/std.i line 2668
or expm1(x, ex)
return exp(X)-1 accurate to machine precision (even for X<<1)
in the second form, returns exp(x) to EX
interpreted function, defined at i0/std.i line 625