memcpy
| void memcpy(void &pToBuffer, const void &pFromBuffer, const short nNumbOfBytes)
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| (void) Function copies characters from pFromBuffer to pToBuffer. nBytesToCopy is the number of bytes to copy. Identical to the function found in conventional C 'string.h' library.
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| Parameter
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Explanation
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Data Type
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| pToBuffer
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buffer to copy to
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void
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| pFromBuffer
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buffer to copy from
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void
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| nNumbOfBytes
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number of bytes to copy
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short
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string sTemp = "ROBOTC"; // create a string, 'sTemp' to be "ROBOTC"
char sArray[20]; // create a char array, 'sArray' of size 20
memcpy(sArray, sTemp, sizeof(sTemp)); // copy characters from 'sTemp' to 'sArray' |
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memset
| void memset(void &pToBuffer, const short nValue, const short nNumbOfBytes)
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| (void) Sets a block of memory at pToBuffer to the value nValue. nNumbOfBytes is the number of bytes to set. This is a useful function for initializing the value of an array to all zeros. Identical to the function found in conventional C 'string.h' library.
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| Parameter
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Explanation
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Data Type
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| pToBuffer
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buffer to set
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void
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| nValue
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value to set buffer to
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short
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| nNumbOfBytes
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number of bytes to set
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short
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int kSendSize = 1; // we will be sending 1 byte
ubyte BytesToSend[kSendSize]; // create a ubyte array of size 1
short nMsgXmit = 0; // we will be setting them to 0
memset(BytesToSend, nMsgXmit, sizeof(BytesToSend)); // set the Byte Array to 0 |
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memcmp
| intrinsic short memcmp(void &pToBuffer, void &pFromBuffer, const short nNumbOfBytes)
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| (void) Compares the first set bytes of the block of memory referenced by "pToBuffer" to the first number of bytes referenced by "pFromBuffer". The function will return zero if they all match or a value different from zero representing which is greater if they do not.
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| Parameter
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Explanation
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Data Type
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| pToBuffer
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First buffer to compare.
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void
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| pFromBuffer
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Second buffer to compare.
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void
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| nNumbOfBytes
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Number of bytes to compare
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short
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char temp1[5] = {'A', 'B', 'C', 'D', 'E'}; //Create an Array
short result = 0; //Variable to store result
result = memcmp(temp1[0], temp1[2], 2); //Perform the memory compare |
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memmove
| void memmove(void &pToBuffer, const void &pFromBuffer, const short nNumbOfBytes)
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| (void) Function copies characters from pFromBuffer to pToBuffer. nBytesToCopy is the number of bytes to copy. Identical to the function found in conventional C 'string.h' library.
The advantage of "memmove" is that the buffers can overlap in memory space - the "memcpy" function they cannot overlap.
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| Parameter
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Explanation
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Data Type
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| pToBuffer
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buffer to copy to
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void
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| pFromBuffer
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buffer to copy from
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void
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| nNumbOfBytes
|
number of bytes to copy
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short
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