* Copy a buffer and test the size of the buffer * Returns SUCCESS on success; DE_INVLDFUNC on failure * * Efficiency note: This function is used as: * return cpyBuf(buf, bufsize, ...) * three times. If the code optimizer is some good, it can re-use * the code to push bufsize, buf, call cpyBuf() and return its result. * The parameter were ordered to allow this code optimization. */
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