freeBlock

 

 

Overview

The freeBlock function sets the specified blocks to vacant in the Bit Vector. Vacant blocks are represented by 0 bits, while occupied blocks are represented by 1 bits.

For example:

(freeBlock bitVector i 3)

The above freeBlock invocation sets the 3 blocks (starting at bit index i) to be vacant. After this invocation:

bitVector[i] = 0

bitVector[(+ i 1)] = 0

bitVector[(+ i 2)] = 0

Usage

The freeBlock function is used to deallocate block space in a BitVector used to manage a memory space or disk space.

 

Syntax

Expression:

(freeBlock BitVector blockIndex blockCount)


Arguments Name Type Description
Argument:BitVectorBitVector The BitVector in which a consecutive string of blocks to be set vacant.
Argument:blockIndexInteger The starting bit index of the consecutive string of blocks to be set vacant.
Argument:blockCountInteger The number of consecutive vacant blocks to be set vacant

Returns:

The block index after the last freed block.


 

Examples

Here are a number of links to Lambda coding examples which contain this instruction in various use cases.

 

Argument Types

Here are the links to the data types of the function arguments.

Vector BitVector Integer

Here are also a number of links to functions having arguments with any of these data types.

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compareGT compareLE compareLT compareNE
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icompareGT icompareLE icompareLT icompareNE
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inside inspect integer isAtom
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isInteger isLambda isMatrix isMember
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isType isVector isub kurtosis
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mapc max median member
mid min minute mod
modi money month muli
new number objectToList objectToMatrix
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