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Memset
From FenixWiki
Contents |
Definition
INT memset ( <BYTE POINTER data> , <BYTE value> , <INT bytes> )
Sets all bytes in a certain memory block to a certain value.
Parameters
| BYTE POINTER data | - Pointer to the block of bytes in memory |
| BYTE value | - Value to set all bytes to. |
| INT bytes | - Number of bytes to change the value of. |
Returns
INT : true
Example
Program example;
Private
byte pointer pbyte;
word pointer pword;
int pointer pint;
int elements = 10;
int i;
Begin
// Allocate memory
pbyte = alloc(elements);
pword = alloc(elements*sizeof(word));
pint = alloc(elements*sizeof(int));
// Reset memory to 0's
memset (pbyte,0,elements);
memsetw(pword,0,elements); // same as memset(pword,0,elements*sizeof(word));
// because value-parameter is 0.
memset (pint ,0,elements*sizeof(int)); // There isn't a "memseti()", so we need to
// set the individual bytes to 0. To change
// ints to nonzero values, memset() can't be
// used easily
// Write numbers to bytes and ints
for(i=0; i<elements; i++)
pbyte[i] = 133; // pbyte[i] is the same as *(pbyte+i)
*(pint+i) = 4555; // pint[i] is the same as *(pint+i)
end
// Write numbers to words
memsetw(pword,345,elements);
// Show numbers
for(i=0; i<elements; i++)
say("byte["+i+"] = " + *(pbyte+i));
say("word["+i+"] = " + pword[i]);
say("int ["+i+"] = " + pint[i]);
end
Loop
frame;
End
End
