8 Intrinsic Procedures

• Introduction:
• `ABORT`:		Abort the program
• `ABS`:		Absolute value
• `ACCESS`:		Checks file access modes
• `ACHAR`:		Character in ASCII collating sequence
• `ACOS`:		Arccosine function
• `ACOSD`:		Arccosine function, degrees
• `ACOSH`:		Inverse hyperbolic cosine function
• `ADJUSTL`:		Left adjust a string
• `ADJUSTR`:		Right adjust a string
• `AIMAG`:		Imaginary part of complex number
• `AINT`:		Truncate to a whole number
• `ALARM`:		Set an alarm clock
• `ALL`:		Determine if all values are true
• `ALLOCATED`:		Status of allocatable entity
• `AND`:		Bitwise logical AND
• `ANINT`:		Nearest whole number
• `ANY`:		Determine if any values are true
• `ASIN`:		Arcsine function
• `ASIND`:		Arcsine function, degrees
• `ASINH`:		Inverse hyperbolic sine function
• `ASSOCIATED`:		Status of a pointer or pointer/target pair
• `ATAN`:		Arctangent function
• `ATAND`:		Arctangent function, degrees
• `ATAN2`:		Arctangent function
• `ATAN2D`:		Arctangent function, degrees
• `ATANH`:		Inverse hyperbolic tangent function
• `ATOMIC_ADD`:		Atomic ADD operation
• `ATOMIC_AND`:		Atomic bitwise AND operation
• `ATOMIC_CAS`:		Atomic compare and swap
• `ATOMIC_DEFINE`:		Setting a variable atomically
• `ATOMIC_FETCH_ADD`:		Atomic ADD operation with prior fetch
• `ATOMIC_FETCH_AND`:		Atomic bitwise AND operation with prior fetch
• `ATOMIC_FETCH_OR`:		Atomic bitwise OR operation with prior fetch
• `ATOMIC_FETCH_XOR`:		Atomic bitwise XOR operation with prior fetch
• `ATOMIC_OR`:		Atomic bitwise OR operation
• `ATOMIC_REF`:		Obtaining the value of a variable atomically
• `ATOMIC_XOR`:		Atomic bitwise OR operation
• `BACKTRACE`:		Show a backtrace
• `BESSEL_J0`:		Bessel function of the first kind of order 0
• `BESSEL_J1`:		Bessel function of the first kind of order 1
• `BESSEL_JN`:		Bessel function of the first kind
• `BESSEL_Y0`:		Bessel function of the second kind of order 0
• `BESSEL_Y1`:		Bessel function of the second kind of order 1
• `BESSEL_YN`:		Bessel function of the second kind
• `BGE`:		Bitwise greater than or equal to
• `BGT`:		Bitwise greater than
• `BIT_SIZE`:		Bit size inquiry function
• `BLE`:		Bitwise less than or equal to
• `BLT`:		Bitwise less than
• `BTEST`:		Bit test function
• `C_ASSOCIATED`:		Status of a C pointer
• `C_F_POINTER`:		Convert C into Fortran pointer
• `C_F_PROCPOINTER`:		Convert C into Fortran procedure pointer
• `C_FUNLOC`:		Obtain the C address of a procedure
• `C_LOC`:		Obtain the C address of an object
• `C_SIZEOF`:		Size in bytes of an expression
• `CEILING`:		Integer ceiling function
• `CHAR`:		Integer-to-character conversion function
• `CHDIR`:		Change working directory
• `CHMOD`:		Change access permissions of files
• `CMPLX`:		Complex conversion function
• `CO_BROADCAST`:		Copy a value to all images the current set of images
• `CO_MAX`:		Maximal value on the current set of images
• `CO_MIN`:		Minimal value on the current set of images
• `CO_REDUCE`:		Reduction of values on the current set of images
• `CO_SUM`:		Sum of values on the current set of images
• `COMMAND_ARGUMENT_COUNT`:		Get number of command line arguments
• `COMPILER_OPTIONS`:		Options passed to the compiler
• `COMPILER_VERSION`:		Compiler version string
• `COMPLEX`:		Complex conversion function
• `CONJG`:		Complex conjugate function
• `COS`:		Cosine function
• `COSD`:		Cosine function, degrees
• `COSH`:		Hyperbolic cosine function
• `COTAN`:		Cotangent function
• `COTAND`:		Cotangent function, degrees
• `COUNT`:		Count occurrences of TRUE in an array
• `CPU_TIME`:		CPU time subroutine
• `CSHIFT`:		Circular shift elements of an array
• `CTIME`:		Subroutine (or function) to convert a time into a string
• `DATE_AND_TIME`:		Date and time subroutine
• `DBLE`:		Double precision conversion function
• `DCMPLX`:		Double complex conversion function
• `DIGITS`:		Significant digits function
• `DIM`:		Positive difference
• `DOT_PRODUCT`:		Dot product function
• `DPROD`:		Double product function
• `DREAL`:		Double real part function
• `DSHIFTL`:		Combined left shift
• `DSHIFTR`:		Combined right shift
• `DTIME`:		Execution time subroutine (or function)
• `EOSHIFT`:		End-off shift elements of an array
• `EPSILON`:		Epsilon function
• `ERF`:		Error function
• `ERFC`:		Complementary error function
• `ERFC_SCALED`:		Exponentially-scaled complementary error function
• `ETIME`:		Execution time subroutine (or function)
• `EVENT_QUERY`:		Query whether a coarray event has occurred
• `EXECUTE_COMMAND_LINE`:		Execute a shell command
• `EXIT`:		Exit the program with status.
• `EXP`:		Exponential function
• `EXPONENT`:		Exponent function
• `EXTENDS_TYPE_OF`:		Query dynamic type for extension
• `FDATE`:		Subroutine (or function) to get the current time as a string
• `FGET`:		Read a single character in stream mode from stdin
• `FGETC`:		Read a single character in stream mode
• `FINDLOC`:		Search an array for a value
• `FLOOR`:		Integer floor function
• `FLUSH`:		Flush I/O unit(s)
• `FNUM`:		File number function
• `FPUT`:		Write a single character in stream mode to stdout
• `FPUTC`:		Write a single character in stream mode
• `FRACTION`:		Fractional part of the model representation
• `FREE`:		Memory de-allocation subroutine
• `FSEEK`:		Low level file positioning subroutine
• `FSTAT`:		Get file status
• `FTELL`:		Current stream position
• `GAMMA`:		Gamma function
• `GERROR`:		Get last system error message
• `GETARG`:		Get command line arguments
• `GET_COMMAND`:		Get the entire command line
• `GET_COMMAND_ARGUMENT`:		Get command line arguments
• `GETCWD`:		Get current working directory
• `GETENV`:		Get an environmental variable
• `GET_ENVIRONMENT_VARIABLE`:		Get an environmental variable
• `GETGID`:		Group ID function
• `GETLOG`:		Get login name
• `GETPID`:		Process ID function
• `GETUID`:		User ID function
• `GMTIME`:		Convert time to GMT info
• `HOSTNM`:		Get system host name
• `HUGE`:		Largest number of a kind
• `HYPOT`:		Euclidean distance function
• `IACHAR`:		Code in ASCII collating sequence
• `IALL`:		Bitwise AND of array elements
• `IAND`:		Bitwise logical and
• `IANY`:		Bitwise OR of array elements
• `IARGC`:		Get the number of command line arguments
• `IBCLR`:		Clear bit
• `IBITS`:		Bit extraction
• `IBSET`:		Set bit
• `ICHAR`:		Character-to-integer conversion function
• `IDATE`:		Current local time (day/month/year)
• `IEOR`:		Bitwise logical exclusive or
• `IERRNO`:		Function to get the last system error number
• `IMAGE_INDEX`:		Cosubscript to image index conversion
• `INDEX`:		Position of a substring within a string
• `INT`:		Convert to integer type
• `INT2`:		Convert to 16-bit integer type
• `INT8`:		Convert to 64-bit integer type
• `IOR`:		Bitwise logical or
• `IPARITY`:		Bitwise XOR of array elements
• `IRAND`:		Integer pseudo-random number
• `IS_CONTIGUOUS`:		Test whether an array is contiguous
• `IS_IOSTAT_END`:		Test for end-of-file value
• `IS_IOSTAT_EOR`:		Test for end-of-record value
• `ISATTY`:		Whether a unit is a terminal device
• `ISHFT`:		Shift bits
• `ISHFTC`:		Shift bits circularly
• `ISNAN`:		Tests for a NaN
• `ITIME`:		Current local time (hour/minutes/seconds)
• `KILL`:		Send a signal to a process
• `KIND`:		Kind of an entity
• `LBOUND`:		Lower dimension bounds of an array
• `LCOBOUND`:		Lower codimension bounds of an array
• `LEADZ`:		Number of leading zero bits of an integer
• `LEN`:		Length of a character entity
• `LEN_TRIM`:		Length of a character entity without trailing blank characters
• `LGE`:		Lexical greater than or equal
• `LGT`:		Lexical greater than
• `LINK`:		Create a hard link
• `LLE`:		Lexical less than or equal
• `LLT`:		Lexical less than
• `LNBLNK`:		Index of the last non-blank character in a string
• `LOC`:		Returns the address of a variable
• `LOG`:		Logarithm function
• `LOG10`:		Base 10 logarithm function
• `LOG_GAMMA`:		Logarithm of the Gamma function
• `LOGICAL`:		Convert to logical type
• `LSHIFT`:		Left shift bits
• `LSTAT`:		Get file status
• `LTIME`:		Convert time to local time info
• `MALLOC`:		Dynamic memory allocation function
• `MASKL`:		Left justified mask
• `MASKR`:		Right justified mask
• `MATMUL`:		matrix multiplication
• `MAX`:		Maximum value of an argument list
• `MAXEXPONENT`:		Maximum exponent of a real kind
• `MAXLOC`:		Location of the maximum value within an array
• `MAXVAL`:		Maximum value of an array
• `MCLOCK`:		Time function
• `MCLOCK8`:		Time function (64-bit)
• `MERGE`:		Merge arrays
• `MERGE_BITS`:		Merge of bits under mask
• `MIN`:		Minimum value of an argument list
• `MINEXPONENT`:		Minimum exponent of a real kind
• `MINLOC`:		Location of the minimum value within an array
• `MINVAL`:		Minimum value of an array
• `MOD`:		Remainder function
• `MODULO`:		Modulo function
• `MOVE_ALLOC`:		Move allocation from one object to another
• `MVBITS`:		Move bits from one integer to another
• `NEAREST`:		Nearest representable number
• `NEW_LINE`:		New line character
• `NINT`:		Nearest whole number
• `NORM2`:		Euclidean vector norm
• `NOT`:		Logical negation
• `NULL`:		Function that returns an disassociated pointer
• `NUM_IMAGES`:		Number of images
• `OR`:		Bitwise logical OR
• `PACK`:		Pack an array into an array of rank one
• `PARITY`:		Reduction with exclusive OR
• `PERROR`:		Print system error message
• `POPCNT`:		Number of bits set
• `POPPAR`:		Parity of the number of bits set
• `PRECISION`:		Decimal precision of a real kind
• `PRESENT`:		Determine whether an optional dummy argument is specified
• `PRODUCT`:		Product of array elements
• `RADIX`:		Base of a data model
• `RAN`:		Real pseudo-random number
• `RAND`:		Real pseudo-random number
• `RANDOM_INIT`:		Initialize pseudo-random number generator
• `RANDOM_NUMBER`:		Pseudo-random number
• `RANDOM_SEED`:		Initialize a pseudo-random number sequence
• `RANGE`:		Decimal exponent range
• `RANK` :		Rank of a data object
• `REAL`:		Convert to real type
• `RENAME`:		Rename a file
• `REPEAT`:		Repeated string concatenation
• `RESHAPE`:		Function to reshape an array
• `RRSPACING`:		Reciprocal of the relative spacing
• `RSHIFT`:		Right shift bits
• `SAME_TYPE_AS`:		Query dynamic types for equality
• `SCALE`:		Scale a real value
• `SCAN`:		Scan a string for the presence of a set of characters
• `SECNDS`:		Time function
• `SECOND`:		CPU time function
• `SELECTED_CHAR_KIND`:		Choose character kind
• `SELECTED_INT_KIND`:		Choose integer kind
• `SELECTED_REAL_KIND`:		Choose real kind
• `SET_EXPONENT`:		Set the exponent of the model
• `SHAPE`:		Determine the shape of an array
• `SHIFTA`:		Right shift with fill
• `SHIFTL`:		Left shift
• `SHIFTR`:		Right shift
• `SIGN`:		Sign copying function
• `SIGNAL`:		Signal handling subroutine (or function)
• `SIN`:		Sine function
• `SIND`:		Sine function, degrees
• `SINH`:		Hyperbolic sine function
• `SIZE`:		Function to determine the size of an array
• `SIZEOF`:		Determine the size in bytes of an expression
• `SLEEP`:		Sleep for the specified number of seconds
• `SPACING`:		Smallest distance between two numbers of a given type
• `SPREAD`:		Add a dimension to an array
• `SQRT`:		Square-root function
• `SRAND`:		Reinitialize the random number generator
• `STAT`:		Get file status
• `STORAGE_SIZE`:		Storage size in bits
• `SUM`:		Sum of array elements
• `SYMLNK`:		Create a symbolic link
• `SYSTEM`:		Execute a shell command
• `SYSTEM_CLOCK`:		Time function
• `TAN`:		Tangent function
• `TAND`:		Tangent function, degrees
• `TANH`:		Hyperbolic tangent function
• `THIS_IMAGE`:		Cosubscript index of this image
• `TIME`:		Time function
• `TIME8`:		Time function (64-bit)
• `TINY`:		Smallest positive number of a real kind
• `TRAILZ`:		Number of trailing zero bits of an integer
• `TRANSFER`:		Transfer bit patterns
• `TRANSPOSE`:		Transpose an array of rank two
• `TRIM`:		Remove trailing blank characters of a string
• `TTYNAM`:		Get the name of a terminal device.
• `UBOUND`:		Upper dimension bounds of an array
• `UCOBOUND`:		Upper codimension bounds of an array
• `UMASK`:		Set the file creation mask
• `UNLINK`:		Remove a file from the file system
• `UNPACK`:		Unpack an array of rank one into an array
• `VERIFY`:		Scan a string for the absence of a set of characters
• `XOR`:		Bitwise logical exclusive or

Next: Intrinsic Modules, Previous: Coarray Programming, Up: Top [Contents][Index]

© Free Software Foundation
Licensed under the GNU Free Documentation License, Version 1.3.
https://gcc.gnu.org/onlinedocs/gcc-12.1.0/gfortran/Intrinsic-Procedures.html

Docs

Docs4dev

Title here

8 Intrinsic Procedures