Categories of Intrinsic Functions

Intel® Fortran Compiler Classic and Intel® Fortran Compiler Developer Guide and Reference

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Categories of Intrinsic Functions

Generic intrinsic functions can be divided into categories, as shown in the following table:

Categories of Intrinsic Functions
Category	Subcategory	Description
Numeric	Computation	Elemental functions that perform type conversions or simple numeric operations: ABS, AIMAG, AINT, AMAX0, AMIN0, ANINT, CEILING, CMPLX, CONJG, DBLE, DCMPLX, DFLOAT, DIM, DNUM, DPROD, DREAL, FLOAT, FLOOR, IFIX, IMAG, INT, INUM, JNUM, KNUM MAX, MAX1, MIN, MIN1, MOD, MODULO, NINT, QCMPLX, QEXT, QFLOAT, QNUM, QREAL, REAL, RNUM, SIGN, SNGL, ZEXT Nonelemental function that provides a pseudorandom number: RAN Elemental function that generates a random number: RANF
	Manipulation^¹	Elemental functions that return values related to the components of the model values associated with the actual value of the argument: EXPONENT, FRACTION, NEAREST, RRSPACING, SCALE, SET_EXPONENT, SPACING
	Inquiry^¹	Functions that return scalar values from the models associated with the type and kind parameters of their arguments^²: DIGITS, EPSILON, HUGE, ILEN, MAXEXPONENT, MINEXPONENT, PRECISION, RADIX, RANGE, SIZEOF, TINY
	Transformational	Functions that perform vector and matrix multiplication: DOT_PRODUCT, MATMUL
	System	Functions that return information about a process or processor: MCLOCK, SECNDS
Kind type		Functions that return kind type parameters: KIND, SELECTED_CHAR_KIND, SELECTED_INT_KIND, SELECTED_REAL_KIND
Mathematical		Elemental functions that perform mathematical operations: ACOS, ACOSD, ACOSH, ASIN, ASIND, ASINH, ATAN, ATAN2, ATAN2D, ATAND, ATANH, BESSEL_J0, BESSEL_J1, BESSEL_JN, BESSEL_Y0, BESSEL_Y1, BESSEL_YN, COS, COSD, COSH,COTAN, COTAND, EXP, EXP10, GAMMA, HYPOT, LOG, LOG10, LOG_GAMMA, SIN, SIND, SINH, SQRT, TAN, TAND, TANH
Bit	Manipulation	Elemental functions that perform bit operations, such as single-bit processing, logical and shift operations, and allowing bit subfields to be referenced: AND, BGE, BGT, BLE, BLT, BTEST, DSHIFTL, DSHIFTR, IAND, IBCHNG, IBCLR, IBITS, IBSET, IEOR, IOR, ISHA, ISHC, ISHFT, ISHFTC, ISHL, IXOR,LSHIFT, MASKL, MASKR, MERGE_BITS, NOT, OR, RSHIFT, SHIFTA, SHIFTL, SHIFTR, XOR
	Inquiry	Function that lets you determine bit size and storage size: BIT_SIZE, STORAGE_SIZE
	Representation	Elemental functions that return information on bit representation of integers: LEADZ, POPCNT, POPPAR, TRAILZ
Character	Comparison	Elemental functions that make a lexical comparison of the character-string arguments and return a default logical result: LGE, LGT, LLE, LLT
	Conversion	Elemental functions that take character arguments and return integer, ASCII, or character values^⁴: ACHAR, CHAR, IACHAR, ICHAR
	String handling	Functions that perform operations on character strings, return lengths of arguments, and search for certain arguments: Elemental: ADJUSTL, ADJUSTR, INDEX, LEN_TRIM, SCAN, VERIFY; Nonelemental: REPEAT, TRIM
	Inquiry	Functions that return the length of an argument or information about command-line arguments: COMMAND_ARGUMENT_COUNT, IARG, IARGC, LEN, NARGS, NUMARG
Array	Construction	Functions that construct new arrays from the elements of existing arrays: Elemental: MERGE; Nonelemental: PACK, SPREAD, UNPACK
	Inquiry	Functions that let you determine if an array argument is allocated, and return the size or shape of an array, and the lower and upper bounds of subscripts along each dimension: ALLOCATED, IS_CONTIGUOUS, LBOUND, RANK, SHAPE, SIZE, UBOUND
	Location	Transformational functions that find the geometric locations of the maximum and minimum values of an array, and find the location of a specified value in an array: MAXLOC, MINLOC, FINDLOC
	Manipulation	Transformational functions that shift an array, transpose an array, or change the shape of an array: CSHIFT, EOSHIFT, RESHAPE, TRANSPOSE
	Reduction	Transformational functions that perform operations on arrays. The functions "reduce" elements of a whole array to produce a scalar result, or they can be applied to a specific dimension of an array to produce a result array with a rank reduced by one: ALL, ANY, COUNT, IALL, IANY, IPARITY, MAXVAL, MINVAL, NORM2, PARITY, PRODUCT, REDUCE, SUM
Coarray	Inquiry	Functions that return execution status of an image, convert cosubscripts, or return sizes of codimensions, or lower or upper cobounds: Elemental: IMAGE_STATUS Nonelemental: COSHAPE, IMAGE_INDEX, LCOBOUND, UCOBOUND
	Transformational	Functions that return the number of images or cosubscripts, return image indices of failed or stopped images, a team number, or a team variable: NUM_IMAGES, THIS_IMAGE, FAILED_IMAGES, STOPPED_IMAGES, TEAM_NUMBER, GET_TEAM
Polymorphic	Inquiry	Functions that let you determine the dynamic type of an object: EXTENDS_TYPE_OF, SAME_TYPE_AS
Miscellaneous		Functions that do the following: Check for pointer association (ASSOCIATED) Return an address (BADDRESS or IADDR) Return the size of a level of the memory cache (CACHESIZE) Check for end-of-file (EOF) Return error functions (ERF, ERFC,and ERFC_SCALED) Return the class of a floating-point argument (FP_CLASS) Return the INTEGER KIND that will hold an address (INT_PTR_KIND) Check for end-of-file condition (IS_IOSTAT_END) Check for end-of-record condition (IS_IOSTAT_EOR) Test for Not-a-Number values (ISNAN) Return the internal address of a storage item (LOC) Return a logical value of an argument (LOGICAL) Allocate memory (MALLOC) Return a new line character (NEW_LINE) Return a disassociated pointer (NULL) Test that a value is safe to convert (OUT_OF_RANGE) Check for argument presence (PRESENT) Convert a bit pattern (TRANSFER)
¹ All of the numeric manipulation, and many of the numeric inquiry functions are defined by the model sets for integers and reals. ² The value of the argument does not have to be defined. ³ For more information on bit functions, see Bit functions. ⁴ The Intel® Fortran processor character set is ASCII, so ACHAR = CHAR and IACHAR = ICHAR.

The following table summarizes the generic intrinsic functions and indicates whether they are elemental, inquiry, or transformational functions. Optional arguments are shown within square brackets.

Some intrinsic functions are specific with no generic association. These functions are listed below.

Summary of Generic Intrinsic Functions
Generic Function	Class	Value Returned
ABS (A)	E	The absolute value of an argument
ACHAR (I [,KIND])	E	The character in the specified position of the ASCII character set
ACOS (X)	E	The arccosine (in radians) of the argument
ACOSD (X)	E	The arccosine (in degrees) of the argument
ACOSH (X)	E	The hyperbolic arccosine of the argument
ADJUSTL (STRING)	E	The specified string with leading blanks removed and placed at the end of the string
ADJUSTR (STRING)	E	The specified string with trailing blanks removed and placed at the beginning of the string
AIMAG (Z)	E	The imaginary part of a complex argument
AINT (A [,KIND])	E	A real value truncated to a whole number
ALL (MASK) or ALL (MASK, DIM)	T	.TRUE. if all elements of the masked array are true
ALLOCATED ([ARRAY=]array) or ALLOCATED ([SCALAR=]scalar)	I	The allocation status of the argument array or scalar
AMAX0 (A1, A2 [, A3,...])	E	The maximum value in a list of integers (returned as a real value)
AMIN0 (A1, A2 [, A3,...])	E	The minimum value in a list of integers (returned as a real value)
AND (I, J)	E	See IAND
ANINT (A [, KIND])	E	A real value rounded to a whole number
ANY (MASK) or ANY (MASK, DIM])	T	.TRUE. if any elements of the masked array are true
ASIN (X)	E	The arcsine (in radians) of the argument
ASIND (X)	E	The arcsine (in degrees) of the argument
ASINH (X)	E	The hyperbolic arcsine of the argument
ASSOCIATED (POINTER [,TARGET])	I	.TRUE. if the pointer argument is associated or the pointer is associated with the specified target
ATAN (X)	E	The arctangent (in radians) of the argument
ATAN2 (Y, X)	E	The arctangent (in radians) of the arguments
ATAN2D (Y, X)	E	The arctangent (in degrees) of the arguments
ATAND (X) or ATAND (Y, X)	E	The arctangent (in degrees) of the argument
ATANH (X)	E	The hyperbolic arctangent of the argument
BADDRESS (X)	I	The address of the argument
BESSEL_J0 (X)	E	A Bessel function of the first kind, order 0
BESSEL_J1 (X)	E	A Bessel function of the first kind, order 1
BESSEL_JN (N, X)	E	A Bessel function of the first kind, order N
BESSEL_JN (N1, N2, X)	T	A Bessel function of the first kind
BESSEL_Y0 (X)	E	A Bessel function of the second kind, order 0
BESSEL_Y1 (X)	E	A Bessel function of the second kind, order 1
BESSEL_YN (N, X)	E	A Bessel function of the second kind, order N
BESSEL_YN (N1, N2, X)	T	A Bessel function of the second kind
BGE (I, J)	E	Bitwise greater than or equal to
BGT (I, J)	E	Bitwise greater than
BIT_SIZE (I)	I	The number of bits (`s`) in the bit model
BLE (I, J)	E	Bitwise less than or equal to
BLT (I, J)	E	Bitwise less than
BTEST (I, POS)	E	.TRUE. if the specified position of argument I is one
CEILING (A [,KIND])	E	The smallest integer greater than or equal to the argument value
CHAR (I [,KIND])	E	The character in the specified position of the processor character set
CMPLX (X [, KIND]) or CMPLX (X [, Y, KIND])	E	The corresponding complex value of the argument(s)
COMMAND_ARGUMENT_COUNT ()	I	The number of command arguments
CONJG (Z)	E	The conjugate of a complex number
COS (X)	E	The cosine of the argument, which is in radians
COSD (X)	E	The cosine of the argument, which is in degrees
COSH (X)	E	The hyperbolic cosine of the argument
COSHAPE (COARRAY [,KIND])	I	The sizes of codimensions of a coarray.
COTAN (X)	E	The cotangent of the argument, which is in radians
COTAND (X)	E	The cotangent of the argument, which is in degrees
COUNT (MASK [, DIM, KIND])	T	The number of .TRUE. elements in the argument array
CSHIFT (ARRAY, SHIFT [,DIM])	T	An array that has the elements of the argument array circularly shifted
DBLE (A)	E	The corresponding double precision value of the argument
DFLOAT (A)	E	The corresponding double precision value of the integer argument
DIGITS (X)	I	The number of significant digits in the model for the argument
DIM (X, Y)	E	The positive difference between the two arguments
DOT_PRODUCT (VECTOR_A, VECTOR_B)	T	The dot product of two rank-one arrays (also called a vector multiply function)
DREAL (A)	E	The corresponding double-precision value of the double complex argument
DSHIFTL (ILEFT, IRIGHT, ISHIFT)	E	The upper (leftmost) 64 bits of a left-shifted 128-bit integer
DSHIFTR (ILEFT, IRIGHT, ISHIFT)	E	The lower (rightmost) 64 bits of a right-shifted 128-bit integer
EOF (A)	I	.TRUE. or .FALSE. depending on whether a file is beyond the end-of-file record
EOSHIFT (ARRAY, SHIFT [,BOUNDARY] [,DIM])	T	An array that has the elements of the argument array end-off shifted
EPSILON (X)	I	The number that is almost negligible when compared to one
ERF (X)	E	The error function of an argument
ERFC (X)	E	The complementary error function of an argument
ERFC_SCALED (X)	E	The scaled complementary error function of an argument
EXP (X)	E	The exponential e^x for the argument x
EXPONENT (X)	E	The value of the exponent part of a real argument
EXTENDS_TYPE_OF (A, MOLD)	I	Whether one dynamic type is an extension of another dynamic type
FAILED_IMAGES ([TEAM, KIND])	T	Image indices of images known to have failed on the specified or current team
FINDLOC (ARRAY, VALUE, DIM [, MASK, KIND, BACK]) or FINDLOC (ARRAY, VALUE [, MASK, KIND, BACK])	T	Location of a specified value in an array.
FLOAT (X)	E	The corresponding real value of the integer argument
FLOOR (A [,KIND])	E	The largest integer less than or equal to the argument value
FP_CLASS (X)	E	The class of the IEEE floating-point argument
FRACTION (X)	E	The fractional part of a real argument
GAMMA (X)	E	A gamma function
GET_TEAM ([LEVEL])	T	Team variable describing the specified team
HUGE (X)	I	The largest number in the model for the argument
HYPOT (X, Y)	E	A Euclidean distance function
IACHAR (C [,KIND])	E	The position of the specified character in the ASCII character set
IADDR (X)	E	See BADDRESS
IAND (I, J)	E	The logical AND of the two arguments
IALL (ARRAY, DIM [, MASK]) or IALL (ARRAY [, MASK])	T	The result of a bitwise AND operation
IANY (ARRAY, DIM [, MASK]) or IANY (ARRAY [, MASK])	T	The result of a bitwise OR operation
IBCLR (I, POS)	E	The specified position of argument I cleared (set to zero)
IBCHNG (I, POS)	E	The reversed value of a specified bit
IBITS (I, POS, LEN)	E	The specified substring of bits of argument I
IBSET (I, POS)	E	The specified bit in argument I set to one
ICHAR (C [, KIND])	E	The position of the specified character in the processor character set
IEOR (I, J)	E	The logical exclusive OR of the corresponding bit arguments
IFIX (X)	E	The corresponding integer value of the real argument rounded as if it were an implied conversion in an assignment
ILEN (I)	I	The length (in bits) in the two's complement representation of an integer
IMAG (Z)	E	See AIMAG
IMAGE_INDEX (COARRAY, SUB) or IMAGE_INDEX (COARRAY, SUB, TEAM) or IMAGE_INDEX (COARRAY, SUB, TEAM_NUMBER)	T	The index of the corresponding image on the current team, or the team specified by TEAM or TEAM_NUMBER if present.
IMAGE_STATUS (IMAGE [, TEAM])	E	Execution status of the specified image number on the specified or current team
INDEX (STRING, SUBSTRING [, BACK, KIND])	E	The position of the specified substring in a character expression
INT (A [, KIND])	E	The corresponding integer value (truncated) of the argument
IOR (I, J)	E	The logical inclusive OR of the corresponding bit arguments
IPARITY (ARRAY, DIM [, MASK]) or IPARITY (ARRAY [, MASK])	T	The result of a bitwise exclusive OR operation
IS_CONTIGUOUS (ARRAY)	I	The contiguity of an array
IS_IOSTAT_END (I)	E	.TRUE. for an end-of-file condition
IS_IOSTAT_EOR (I)	E	.TRUE. for an end-of-record condition
ISHA (I, SHIFT)	E	Argument I shifted left or right by a specified number of bits
ISHC (I, SHIFT)	E	Argument I rotated left or right by a specified number of bits
ISHFT (I, SHIFT)	E	The logical end-off shift of the bits in argument I
ISHFTC (I, SHIFT [,SIZE])	E	The logical circular shift of the bits in argument I
ISHL (I, SHIFT)	E	Argument I logically shifted left or right by a specified number of bits
ISNAN (X)	E	Tests for Not-a-Number (NaN) values
IXOR (I, J)	E	See IEOR
KIND (X)	I	The kind type parameter of the argument
LBOUND (ARRAY [, DIM, KIND])	I	The lower bounds of an array (or one of its dimensions)
LEADZ (I)	E	The number of leading zero bits in an integer
LEN (STRING [,KIND])	I	The length (number of characters) of the argument character string
LEN_TRIM (STRING [,KIND])	E	The length of the specified string without trailing blanks
LGE (STRING_A, STRING_B)	E	A logical value determined by a > or = comparison of the arguments
LGT (STRING_A, STRING_ B)	E	A logical value determined by a > comparison of the arguments
LLE (STRING_A, STRING_B)	E	A logical value determined by a < or = comparison of the arguments
LLT (STRING_A, STRING_B)	E	A logical value determined by a < comparison of the arguments
LOC (A)	I	The internal address of the argument.
LOG (X)	E	The natural logarithm of the argument
LOG10 (X)	E	The common logarithm (base 10) of the argument
LOG_GAMMA (X)	E	The logarithm of the absolute value of the gamma function
LOGICAL (L [,KIND])	E	The logical value of the argument converted to a logical of type KIND
LSHIFT (I, POSITIVE_SHIFT)	E	See ISHFT
LSHFT (I, POSITIVE_SHIFT)	E	Same as LSHIFT; see ISHFT
MALLOC (I)	E	The starting address for the block of memory allocated
MASKL (I [,KIND])	E	A left-justified mask
MASKR (I [,KIND])	E	A right-justified mask
MATMUL (MATRIX_A, MATRIX_B)	T	The result of matrix multiplication (also called a matrix multiply function)
MAX (A1, A2 [, A3,...])	E	The maximum value in the set of arguments
MAX1 (A1, A2 [, A3,...])	E	The maximum value in the set of real arguments (returned as an integer)
MAXEXPONENT (X)	I	The maximum exponent in the model for the argument
MAXLOC (ARRAY, DIM [, MASK, KIND, BACK]) or MAXLOC (ARRAY [, MASK, KIND, BACK])	T	The rank-one array that has the location of the maximum element in the argument array
MAXVAL (ARRAY, DIM [, MASK]) or MAXVAL (ARRAY [, MASK])	T	The maximum value of the elements in the argument array
MERGE (TSOURCE, FSOURCE, MASK)	E	An array that is the combination of two conformable arrays (under a mask)
MERGE_BITS (I, J, MASK)	E	The merge of bits under a mask
MIN (A1, A2 [, A3,...])	E	The minimum value in the set of arguments
MIN1 (A1, A2 [, A3,...])	E	The minimum value in the set of real arguments (returned as an integer)
MINEXPONENT (X)	I	The minimum exponent in the model for the argument
MINLOC (ARRAY, DIM [, MASK, KIND, BACK]) or MINLOC (ARRAY [, MASK, KIND, BACK])	T	The rank-one array that has the location of the minimum element in the argument array
MINVAL (ARRAY, DIM [, MASK]) or MINVAL (ARRAY [, MASK])	T	The minimum value of the elements in the argument array
MOD (A, P)	E	The remainder of the arguments (has the sign of the first argument)
MODULO (A, P)	E	The modulo of the arguments (has the sign of the second argument)
NEAREST (X, S)	E	The nearest different machine-representable number in a given direction
NEW_LINE (A)	I	A new line character
NINT (A [,KIND])	E	A real value rounded to the nearest integer
NORM2 (X) or NORM2 (X, DIM)	T	The L2 norm of an array
NOT (I)	E	The logical complement of the argument
NULL ([MOLD])	T	A disassociated pointer
NUM_IMAGES () or NUM_IMAGES (team) or NUM_IMAGES (team_number)	T	The number of images on the current or specified team
OR (I, J)	E	See IOR
OUT_OF_RANGE (X, MOLD [, ROUND])	E	Indicates if a value can be safely converted
PACK (ARRAY, MASK [,VECTOR])	T	A packed array of rank one (under a mask)
PARITY (MASK) or PARITY (MASK, DIM)	T	The result of an exclusive OR operation
POPCNT (I)	E	The number of 1 bits in the integer argument
POPPAR (I)	E	The parity of the integer argument
PRECISION (X)	I	The decimal precision (real or complex) of the argument
PRESENT (A)	I	.TRUE. if an actual argument has been provided for an optional dummy argument
PRODUCT (ARRAY, DIM [,MASK]) or PRODUCT (ARRAY [, MASK])	T	The product of the elements of the argument array
QEXT (A)	E	The corresponding REAL(16) precision value of the argument
QFLOAT (A)	E	The corresponding REAL(16) precision value of the integer argument
RADIX (X)	I	The base of the model for the argument
RANGE (X)	I	The decimal exponent range of the model for the argument
RANF ()	T	A random number between 0.0 and RAND_MAX
RANK (A)	I	The rank of a data object
REAL (A [, KIND])	E	The corresponding real value of the argument
REDUCE (ARRAY, OPERATION [, MASK] [, IDENTITY] [, ORDERED]) or REDUCE (ARRAY, OPERATION, DIM [, MASK] [, IDENTITY] [, ORDERED])	T	Generalized array reduction
REPEAT (STRING, NCOPIES)	T	The concatenation of zero or more copies of the specified string
RESHAPE (SOURCE, SHAPE [, PAD,ORDER])	T	An array that has a different shape than the argument array, but the same elements
RRSPACING (X)	E	The reciprocal of the relative spacing near the argument
RSHIFT (I, NEGATIVE_SHIFT)	E	See ISHFT
RSHFT (I, N EGATIVE_SHIFT)	E	Same as RSHIFT; see ISHFT
SAME_TYPE_AS (A, B)	I	Whether two dynamic types are the same.
SCALE (X, I)	E	The value of the exponent part (of the model for the argument) changed by a specified value
SCAN (STRING, SET [, BACK, KIND])	E	The position of the specified character (or set of characters) within a string
SELECTED_CHAR_KIND (NAME)	T	The value of the kind type parameter of the character set named by the argument
SELECTED_INT_KIND (R)	T	The integer kind parameter of the argument
SELECTED_REAL_KIND ([P, R, RADIX])	T	The real kind parameter of the argument; one of the optional arguments must be specified
SET_EXPONENT (X, I)	E	The value of the exponent part (of the model for the argument) set to a specified value
SHAPE (SOURCE [,KIND])	I	The shape (rank and extents) of an array or scalar
SHIFTA (I, SHIFT)	E	A right shift with fill
SHIFTL (I, SHIFT)	E	Argument IVALUE shifted left by a specified number of bits
SHIFTR (I, SHIFT)	E	Argument IVALUE shifted right by a specified number of bits
SIGN (A, B)	E	A value with the sign transferred from its second argument
SIN (X)	E	The sine of the argument, which is in radians
SIND (X)	E	The sine of the argument, which is in degrees
SINH (X)	E	The hyperbolic sine of the argument
SIZE (ARRAY [, DIM, KIND])	I	The size (total number of elements) of the argument array (or one of its dimensions)
SIZEOF (X)	I	The bytes of storage used by the argument
SNGL (X)	E	The corresponding real value of the argument
SPACING (X)	E	The value of the absolute spacing of model numbers near the argument
SPREAD (SOURCE, DIM, NCOPIES)	T	A replicated array that has an added dimension
SQRT (X)	E	The square root of the argument
STOPPED_IMAGES ([TEAM, KIND])	T	Image indices of stopped images on the specified or current team
STORAGE_SIZE (A [,KIND])	I	The storage size in bits
SUM (ARRAY, DIM [, MASK]) or SUM (ARRAY [, MASK])	T	The sum of the elements of the argument array
TAN (X)	E	The tangent of the argument, which is in radians
TAND (X)	E	The tangent of the argument, which is in degrees
TANH (X)	E	The hyperbolic tangent of the argument
TEAM_NUMBER ([TEAM])	T	The team number of the specified team
THIS_IMAGE ([TEAM]) or THIS_IMAGE (COARRAY [, TEAM]) or THIS_IMAGE (COARRAY, DIM [, TEAM)	T	The index of the invoking image on the specified team or the cosubscripts for the image on the specified team
TINY (X)	I	The smallest positive number in the model for the argument
TRAILZ (I)	E	The number of trailing zero bits in an integer
TRANSFER (SOURCE, MOLD [,SIZE])	T	The bit pattern of SOURCE converted to the type and kind parameters of MOLD
TRANSPOSE (MATRIX)	T	The matrix transpose for the rank-two argument array
TRIM (STRING)	T	The argument with trailing blanks removed
UBOUND (ARRAY [, DIM, KIND])	I	The upper bounds of an array (or one of its dimensions)
UNPACK (VECTOR, MASK, FIELD)	T	An array (under a mask) unpacked from a rank-one array
VERIFY (STRING, SET [, BACK, KIND])	E	The position of the first character in a string that does not appear in the given set of characters
XOR (I, J)	E	See IEOR
ZEXT (X [,KIND])	E	A zero-extended value of the argument
Key to Classes E-Elemental I-Inquiry T-Transformational

The following table lists specific functions that have no generic function associated with them and indicates whether they are elemental, nonelemental, or inquiry functions. Optional arguments are shown within square brackets.

Specific Functions with No Generic Association
Generic Function	Class	Value Returned
CACHESIZE (N)	I	The size of a level of the memory cache
DCMPLX (X, Y)	E	The corresponding double complex value of the argument
DNUM (I)	E	The corresponding REAL(8) value of a character string
DPROD (X, Y)	E	The double-precision product of two real arguments
DREAL (A)	E	The corresponding double-precision value of the double-complex argument
IARG ( )	I	See IARGC
IARGC ( )	I	The index of the last command-line argument
INT_PTR_KIND ( )	I	The INTEGER kind that will hold an address
INUM (I)	E	The corresponding INTEGER(2) value of a character string
JNUM (I)	E	The corresponding INTEGER(4) value of a character string
KNUM (I)	E	The corresponding INTEGER(8) value of a character string
MCLOCK ( )	I	The sum of the current process's user time and the user and system time of all its child processes
NARGS ( )	I	The total number of command-line arguments, including the command
NUMARG ( )	I	See IARGC
QCMPLX (X, Y)	E	The corresponding COMPLEX(16) value of the argument
QNUM (I)	E	The corresponding REAL(16) value of a character string
QREAL (A)	E	The corresponding REAL(16) value of the real part of a COMPLEX(16) argument
RAN (I)	N	The next number from a sequence of pseudorandom numbers (uniformly distributed in the range 0 to 1)
RNUM (I)	E	The corresponding REAL(4) value of a character string
SECNDS (X)	E	The system time of day (or elapsed time) as a floating-point value in seconds
Key to Classes E-Elemental I-Inquiry N-Nonelemental

Parent topic: Categories and Lists of Intrinsic Procedures

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Categories of Intrinsic Functions