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9 Intrinsic Procedures

• Introduction:  
• ABORT:  Abort the program
• ABS:  Absolute value
• ACCESS:  Checks file access modes
• ACHAR:  Character in ASCII collating sequence
• ACOS:  Arccosine function
• 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
• ASINH:  Inverse hyperbolic sine function
• ASSOCIATED:  Status of a pointer or pointer/target pair
• ATAN:  Arctangent function
• ATAN2:  Arctangent function
• 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
• COSH:  Hyperbolic cosine function
• 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
• 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_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
• LONG:  Convert to integer 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_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
• 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
• 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

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