HiWord
HiWord Obtain most-significant 16 bits of 32-bit operand long theLong ; 32-bit source operand
returns high-order 16 bits of theLong
HiWord returns the high-order 16-bit word of a 32-bit long value. theLong is any 32-bit value. It is treated as an unsigned.
Returns: a 16-bit integer; the high word of theLong ; i.e., the same value as (((unsigned long)theLong & 0xFFFF0000) >> 16 ).
Notes: This function is equivalent to the faster, but less self- documenting:
short theInt;
long theLong;
theInt = (theLong >> 16 ) & 0xFFFF;
If you use this function often, you may wish to create a fast macro; e.g.:
#define HiWord(x) ( (unsigned long)x>>16 )
type. The high word is the integer portion and the low word is the
fractional part.