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functions in std.i - c
call
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call, subroutine(arg1, arg2, arg3, arg4, arg5
arg6, arg7, arg8);
allows a SUBROUTINE to be called with a very long argument list
as an alternative to:
subroutine, arg1, arg2, arg3, arg4, arg5,
arg6, arg7, arg8;
Note that the statement
subroutine(arg1, arg2, arg3, arg4, arg5,
arg6, arg7, arg8);
will print the return value of subroutine, even if it is nil.
If invoked as a function, call simply returns its argument.
interpreted function, defined at i0/std.i line 2793
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catch
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catch(category)
Catch errors of the specified category. Category may be -1 to
catch all errors, or a bitwise or of the following bits:
0x01 math errors (SIGFPE, math library)
0x02 I/O errors
0x04 keyboard interrupts (e.g.- control C interrupt)
0x08 other compiled errors (YError)
0x10 interpreted errors (error)
Use catch by placing it in a function before the section of code
in which you are trying to catch errors. When catch is called,
it always returns 0, but it records the virtual machine program
counter where it was called, and longjumps there if an error is
detected. The most recent matching call to catch will catch the
error. Returning from the function in which catch was called
pops that call off the list of catches the interpreter checks.
To use catch, place the call near the top of a function:
if (catch(category)) {
......
}
......
If an error with the specified category occurs in the "protected"
code, the program jumps back to the point of the catch and acts
as if the catch function had returned 1 (remember that when catch
is actually called it always returns 0).
In order to lessen the chances of infinite loops, the catch is
popped off the active list if it is actually used, so that a
second error will *not* be caught. Often, this is only desirable
for the error handling code itself -- if you want to re-execute
the "protected" code, do this, and take care of the possibility
of infinite loops in your interpreted code:
while (catch(category)) {
......
}
......
After an error has been caught, the associated error message
(what would have been printed had it not been caught) is left
in the variable catch_message.
builtin function, documented at i0/std.i line 2548
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SEE ALSO:
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error
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cd
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cd, directory_name
or cd(directory_name)
change current working directory to DIRECTORY_NAME, returning
the expanded path name (i.e.- with leading environment variables,
., .., or ~ replaced by the actual pathname). If called as a
function, returns nil to indicate failure, otherwise failure
causes a Yorick error.
builtin function, documented at i0/std.i line 1546
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SEE ALSO:
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lsdir,
mkdir,
rmdir,
get_cwd,
get_home,
get_env,
get_argv
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ceil
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ceil(x)
returns the smallest integer not less than x (no-op on integers).
builtin function, documented at i0/std.i line 618
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SEE ALSO:
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floor
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close
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close, f
closes the I/O stream F (returned earlier by the open function).
If F is a simple variable reference (as opposed to an expression),
the close function will set F to nil. If F is the only reference
to the I/O stream, then "close, f" is equivalent to "f= []".
Otherwise, "close, f" will close the file (so that subsequent
I/O operations will fail) and print a warning message about the
outstanding ("stale") references.
builtin function, documented at i0/std.i line 1221
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SEE ALSO:
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open,
read,
write,
rdline,
bookmark,
backup,
save,
restore,
rename,
remove
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close102
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close102 is a keyword for createb or updateb,
open102 is a keyword for openb or updateb
close102_default is a global variable (initially 0)
***Do not use close102_default -- use at_pdb_close
-- this is for backward compatibility only***
close102=1 means to close the PDB file "Major-Order:102"
close102=0 means close it "Major-Order:101"
if not specified, uses 1 if close102_default non-zero,
otherwise the value specified in at_pdb_close
open102=1 means to ignore what the PDB file says internally,
and open it as if it were "Major-Order:102"
open102=0 (the default) means to assume the PDB file is
correctly writen
open102=2 means to assume that the file is incorrectly
written, whichever way it is marked
open102=3 means to ignore what the PDB file says internally,
and open it as if it were "Major-Order:101"
The PDB file format comes in two styles, "Major-Order:101", and
"Major-Order:102". Yorick interprets these correctly by default,
but other codes may ignore them, or write them incorrectly.
Unlike Yorick, not all codes are able to correctly read both
styles. If you are writing a file which needs to be read by
a "102 style" code, create it with the close102=1 keyword.
If you notice that a file you though was a history file isn't, or
that the dimensions of multi-dimensional variables are transposed
from the order you expected, the code which wrote the file probably
blew it. Try openb("filename", open102=2). The choices 1 and 3
are for cases in which you know the writing code was supposed to
write the file one way or the other, and you don't want to be
bothered.
The open102 and close102 keywords, if present, override the
defaults in the variables at_pdb_open and at_pdb_close.
keyword, defined at i0/std.i line 1792
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SEE ALSO:
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at_pdb_open,
at_pdb_close
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collect
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result= collect(f, name_string)
scans through all records of the history file F accumulating the
variable NAME_STRING into a single array with one additional
index varying from 1 to the number of records.
NAME_STRING can be either a simple variable name, or a name
followed by up to four simple indices which are either nil, an
integer, or an index range with constant limits. (Note that
0 or negative indices count from the end of a dimension.)
Examples:
collect(f, "xle") -- collects the variable f.xle
collect(f, "tr(2,2:)") -- collects f.tr(2,2:)
collect(f, "akap(2,-1:0,)") -- collects f.akap(2,-1:0,)
(i.e.- akap in the last two values of its
second index)
interpreted function, defined at i0/std.i line 1714
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SEE ALSO:
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get_times
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conj
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conj(z)
returns the complex conjugate of its argument.
builtin function, documented at i0/std.i line 646
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copyright
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copyright, (no) warranty
Copyright (c) 1996. The Regents of the University of California.
All rights reserved.
Yorick is provided "as is" without any warranty, either expressed or
implied. For a complete statement, type:
legal
at the Yorick prompt.
keyword, defined at i0/std.i line 72
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SEE ALSO:
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legal
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cray_primitives
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cray_primitives, file
sets FILE primitive data types to be native to Cray 1, XMP, and YMP.
interpreted function, defined at i0/std.i line 2003
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create
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f= create(filename)
is a synonym for f= open(filename, "w")
Creates a new text file FILENAME, destroying any existing file of
that name. Use the write function to write into the file F.
interpreted function, defined at i0/std.i line 1212
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SEE ALSO:
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write,
close,
open
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createb
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file= createb(filename)
or file= createb(filename, primitives)
creates FILENAME as a PDB file in "w+b" mode, destroying any
existing file by that name. If the PRIMITIVES argument is
supplied, it must be the name of a procedure that sets the
primitive data types for the file. The default is to create
a file with the native primitive types of the machine on which
Yorick is running. The following PRIMITIVES functions are
predefined:
sun_primitives -- appropriate for Sun, HP, IBM, and
most other workstations
sun3_primitives -- appropriate for old Sun-2 or Sun-3
dec_primitives -- appropriate for DEC (MIPS) workstations, Windows
alpha_primitives -- appropriate for DEC alpha workstations
sgi64_primitives -- appropriate for 64 bit SGI workstations
cray_primitives -- appropriate for Cray 1, XMP, and YMP
mac_primitives -- appropriate for MacIntosh
macl_primitives -- appropriate for MacIntosh, 12-byte double
i86_primitives -- appropriate for Linux i86 machines
pc_primitives -- appropriate for IBM PC
vax_primitives -- appropriate for VAXen only (H doubles)
vaxg_primitives -- appropriate for VAXen only (G doubles)
xdr_primitives -- appropriate for XDR files
interpreted function, defined at i0/std.i line 1925
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SEE ALSO:
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openb,
updateb,
cd,
save,
add_record,
set_filesize,
set_blocksize,
close102,
close102_default,
at_pdb_open,
at_pdb_close
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