MEMFILL: Difference between revisions
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(Created page with "{{DISPLAYTITLE:_MEMFILL}} The _MEMFILL statement converts a value to a specified type, then fills memory with that type including any non-whole remainder. {{PageSyntax}} : _MEMFILL {{Parameter|memoryBlock}}, {{Parameter|memoryBlock.OFFSET}}, {{Parameter|fillBytes}}, {{Parameter|value}} [AS {{Parameter|variableType}}] {{Parameters}} * The {{Parameter|memoryBlock}} _MEM memory block is the block referenced to be filled. * {{Parameter|memoryBlock.OFFSET}} is...") |
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* {{Parameter|memoryBlock.OFFSET}} is the starting offset of the above referenced memory block. | * {{Parameter|memoryBlock.OFFSET}} is the starting offset of the above referenced memory block. | ||
* The {{Parameter|fillBytes}} is the number of bytes to fill the memory block. | * The {{Parameter|fillBytes}} is the number of bytes to fill the memory block. | ||
* The {{Parameter|value}} is the value to place in the memory block at the designated OFFSET position. | * The {{Parameter|value}} is the value to place in the memory block at the designated OFFSET position. | ||
* A literal or variable {{Parameter|value}} can be optionally set [[AS]] a variable [[type]] appropriate for the memory block. | * A literal or variable {{Parameter|value}} can be optionally set [[AS]] a variable [[type]] appropriate for the memory block. | ||
| Line 21: | Line 21: | ||
{{PageExamples}} | {{PageExamples}} | ||
''Example:'' Filling array values quickly using FOR loops or a simple memory fill. | ''Example:'' Filling array values quickly using FOR loops or a simple memory fill. | ||
{{CodeStart}} | {{CodeStart}} | ||
{{Cl|DIM}} a(100, 100) {{Cl|AS}} {{Cl|LONG}} | {{Cl|DIM}} a(100, 100) {{Cl|AS}} {{Cl|LONG}} | ||
{{Cl|DIM}} b(100, 100) {{Cl|AS}} {{Cl|LONG}} | {{Cl|DIM}} b(100, 100) {{Cl|AS}} {{Cl|LONG}} | ||
| Line 36: | Line 36: | ||
mema = {{Cl|_MEM (function)|_MEM}}(b()) | mema = {{Cl|_MEM (function)|_MEM}}(b()) | ||
{{Cl|_MEMFILL}} mema, mema.OFFSET, mema.SIZE, 13 {{Cl|AS}} {{Cl|LONG}} | {{Cl|_MEMFILL}} mema, mema.OFFSET, mema.SIZE, 13 {{Cl|AS}} {{Cl|LONG}} | ||
{{Cl|_MEMFREE}} mema | {{Cl|_MEMFREE}} mema | ||
{{CodeEnd}} | {{CodeEnd}} | ||
Revision as of 02:03, 23 January 2023
The _MEMFILL statement converts a value to a specified type, then fills memory with that type including any non-whole remainder.
Syntax
- _MEMFILL memoryBlock, memoryBlock.OFFSET, fillBytes, value [AS variableType]
- The memoryBlock _MEM memory block is the block referenced to be filled.
- memoryBlock.OFFSET is the starting offset of the above referenced memory block.
- The fillBytes is the number of bytes to fill the memory block.
- The value is the value to place in the memory block at the designated OFFSET position.
- A literal or variable value can be optionally set AS a variable type appropriate for the memory block.
Description
- To clear previous data from a _MEMNEW memory block, use _MEMFILL with a value of 0.
Examples
Example: Filling array values quickly using FOR loops or a simple memory fill.
DIM a(100, 100) AS LONG DIM b(100, 100) AS LONG 'filling array a with value 13 FOR i1 = 0 TO 100 FOR i2 = 0 TO 100 a(i1, i2) = 13 NEXT NEXT 'filling array b with value 13 DIM mema AS _MEM mema = _MEM(b()) _MEMFILL mema, mema.OFFSET, mema.SIZE, 13 AS LONG _MEMFREE mema |
See also