Release calc version 2.10.3t5.45

help/isblk

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