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LEADZ
— Number of leading zero bits of an integerLEADZ
returns the number of leading zero bits of an integer.
RESULT = LEADZ(I)
I | Shall be of type INTEGER .
|
INTEGER
.
If all the bits of I
are zero, the result value is BIT_SIZE(I)
.
PROGRAM test_leadz WRITE (*,*) BIT_SIZE(1) ! prints 32 WRITE (*,*) LEADZ(1) ! prints 31 END PROGRAM