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37 lines
1.0 KiB
Plaintext
37 lines
1.0 KiB
Plaintext
NAME
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inputlevel - current input level
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SYNOPSIS
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inputlevel()
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TYPES
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return nonnegative integer
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DESCRIPTION
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This function returns the input level at which it is called.
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When calc starts, it is at level zero. The level is increased
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by 1 each time execution starts of a read file command or a call to
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eval(S) for some expression S which evaluates to a string. It
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decreases by 1 when a file being read reaches EOF or a string
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being eval-ed reaches '\0', or earlier if a quit statement is
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encountered at top calculation-level in the flle or string. It
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decreases to zero if an abort statement is encountered at any
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function-level in the file or string. If a quit or abort
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statement is encountered at top calculation-level at top input-level,
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calc is exited.
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Zero input level is also called top input level; greater values
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of inputlevel() indicate reading at greater depths.
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EXAMPLE
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n/a
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LIMITS
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none
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LIBRARY
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none
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SEE ALSO
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read, eval, quit, abort, calclevel
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