4.10 Intrinsics

f95 supports some intrinsic procedures that are extensions beyond the standard.

Table 4–4 Nonstandard Intrinsics

Name	Definition	Function Type	Argument Types	Arguments	Notes
COT	Cotangent	real	real	([X=]x)	P, E
DDIM	Positive difference	double precision	double precision	([X=]x,[Y=]y)	P, E
LEADZ	Get the number of leading 0 bits	integer	Boolean, integer, real, or pointer	([I=]i)	NP, I
POPCNT	Get the number of set bits	integer	Boolean, integer, real, or pointer	([I=]i)	NP, I
POPPAR	Calculate bit population parity	integer	Boolean, integer, real, or pointer	([X=]x)	NP, I

Notes:P: The name can be passed as an argument. NP: The name cannot be passed as an argument. E: External code for the intrinsic is called at run time. I: f95 generates inline code for the intrinsic procedure.

See the Fortran Library Reference for a more complete discussion of intrinsics, including those from Fortran 77 that are recognized by the Fortran 95 compiler.