Intel® Fortran Compiler 17.0 Developer Guide and Reference
The following table lists the intrinsic subroutines. Optional arguments are shown within square brackets. All these subroutines are nonelemental except for MVBITS. None of the intrinsic subroutines can be passed as actual arguments.
Subroutine |
Value Returned or Result |
|---|---|
ATOMIC_DEFINE (atom, value) |
Defines a variable atomically. |
ATOMIC_REF (value, atom) |
Lets you reference a variable atomically. |
CPU_TIME (time) |
The processor time in seconds |
DATE (buf) |
The ASCII representation of the current date (in dd-mmm-yy form) |
DATE_AND_TIME ([date] [,time] [,zone] [,values]) |
Date and time information from the real-time clock |
ERRSNS ([io_err] [,sys_err] [,stat] [,unit] [,cond]) |
Information about the most recently detected error condition |
EXECUTE_COMMAND_LINE (command [, wait, exitstat, cmdstat, cmdmsg]) |
The command line is executed. |
EXIT ([status]) |
Image exit status is optionally returned; the program is terminated, all files closed, and control is returned to the operating system. |
FREE (a) |
Frees memory that is currently allocated. |
GETARG (n, buffer [,status]) |
The specified command line argument (where the command itself is argument number zero) |
GET_COMMAND ([command, length, status]) |
The entire command that was used to invoke the program |
GET_COMMAND_ARGUMENT (n [, value, length, status]) |
A command line argument of the command that invoked the program |
GET_ENVIRONMENT_VARIABLE (name [, value, length, status, trim_name]) |
The value of an environment variable |
IDATE (i, j, k) |
Three integer values representing the current month, day, and year |
MM_PREFETCH (address [,hint] [,fault] [,exclusive]) |
Data from the specified address on one memory cache line |
MOVE_ALLOC (from, to) |
An allocation is moved from one allocatable object to another. |
MVBITS (from, frompos, len, to, topos)1 |
A sequence of bits (bit field) is copied from one location to another. |
RANDOM_NUMBER (harvest) |
A pseudorandom number taken from a sequence of pseudorandom numbers uniformly distributed within the range 0.0 to 1.0 |
RANDOM_SEED ([size] [,put] [,get]) |
The initialization or retrieval of the pseudorandom number generator seed value |
RANDU (i1, i2, x) |
A pseudorandom number as a single- precision value (within the range 0.0 to 1.0) |
SYSTEM_CLOCK ([count] [,count_rate] [,count_max]) |
Data from the processors real-time clock |
TIME (buf) |
The ASCII representation of the current time (in hh:mm:ss form) |
1 An elemental subroutine |
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