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Alloc
From FenixWiki
Contents |
Definition
VOID POINTER alloc ( <INT size> )
Allocates a block of memory of a certain size.
Parameters
| INT size | - The size of the to be allocated memory in bytes. |
Returns
VOID POINTER : Pointer to the first element of the allocated memory block.
Errors
| Insufficient memory | - There is insufficient memory available. This error doesn't occur often. |
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
Used in example: memset(), memsetw(), sizeof(), say(), pointer
