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45 lines
884 B
Plaintext
45 lines
884 B
Plaintext
NAME
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isblk - whether or not a value is a block
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SYNOPSIS
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isblk(val)
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TYPES
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val any
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return 0, 1, or 2
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DESCRIPTION
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isblk(val) returns 1 if val is an unnamed block, 2 if val is a
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named block, 0 otherwise.
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Note that a named block B retains its name after its data block is
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freed by rmblk(B). That a named block B has null data block may be
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tested using sizeof(B); this returns 0 if and only if the memory
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has been freed.
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EXAMPLE
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> A = blk()
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> isblk(A)
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1
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> B = blk("beta")
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> isblk(B)
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2
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> isblk(3)
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0
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LIMITS
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none
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LIBRARY
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none - XXX ???
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SEE ALSO
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blk, blocks, blkfree,
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isassoc, isatty, isconfig, isdefined, iserror, iseven, isfile,
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ishash, isident, isint, islist, ismat, ismult, isnull, isnum, isobj,
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isobjtype, isodd, isprime, isrand, israndom, isreal, isrel,
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issimple, issq, isstr, istype
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