nsCRT::memcpy(aDImage, aSImage, aNumBytes);
memcpy(aDImage, aSImage, aNumBytes);
static void DoOpaqueBlend(PRInt32 aNumLines, PRInt32 aNumBytes,                          PRUint8 *aSImage, PRUint8 *aDImage,                          PRInt32 aSLSpan, PRInt32 aDLSpan){  PRIntn y;  for (y = 0; y < aNumLines; y++) {    nsCRT::memcpy(aDImage, aSImage, aNumBytes);    aSImage += aSLSpan;    aDImage += aDLSpan;  }}