end [module [name]] If there are no procedures, then contains is not required. Privacy policy About Wikibooks Disclaimers Developers Cookie statement Mobile view Jump to Main Content Purdue University Engineering Computer Network Home Overview Trouble Report Site Specialists Knowledge Base Webmail WebCams Contact Us Otherwise, if appropriate, use formatted I/O (such as list-directed or namelist I/O). 257 severe (257): Formatted I/O to unit open for unformatted transfers FOR$IOS_FMTIO_UNF. The module mechanism makes the explicit interface of procedures easily available to calling routines.

This function solves a system of equations (Ax = b) by using the Gauss-Seidel Method implicit none real :: tol_max ! An attempt was made to specify a substring by using an unsubscripted array variable. 20 severe (20): REWIND error FOR$IOS_REWERR. cube_integrals, a library which returns the exact value of the integral of any monomial over the interior of the unit cube in 3D. on the bits of integers i and j.

else return empty string. ! A non-CHARACTER item in namelist input was qualified with a substring range. 629 severe (629): Internal file overflow FOR$IOS_F6600. linpack, a library which solves linear systems for a variety of matrix storage schemes, real or complex arithmetic, and single or double precision. Attempted unformatted I/O to a unit where the OPEN statement (FORM specifier) indicated the file was formatted.

Consider specifying a larger integer data size (modify source program or, for an INTEGER declaration, possibly use the f90 option -integer_size nn ). 71 1 severe (71): Integer divide by zero chrpak, a library which manipulates characters and strings; circle_arc_grid, a program which computes grid points along a circular arc. The Intel Fortran RTL I/O system detected an error condition during execution of a REWIND statement. 21 severe (21): Duplicate file specifications FOR$IOS_DUPFILSPE. hyperball_integrals, a library which returns the exact value of the integral of any monomial over the interior of the unit hyperball in M dimensions.

No period appeared between the w and d fields of a D, E, F, or G edit descriptor. 645 severe (645): Unexpected end of format FOR$IOS_F6988. alpert_rule, a library which can set up an Alpert quadrature rule for functions which are regular, log(x) singular, or 1/sqrt(x) singular. A syntax error was encountered while the RTL was processing a format stored in an array or character variable. 63 error or info(63): Output conversion error FOR$IOS_OUTCONERR. lgt( strin_a1, string_b ) lexically greater than.

See your operating system documentation for more information. 1691 severe(169): Program Exception - noncontinuable exception FOR$IOS_PGM_NOCONTEXCP. The three most common errors are segmentation violations, bus errors, and arithmetic exceptions. Output: its value is modified from within the function, only if the argument is required integer, optional, intent(out) :: actual_iter ! It can also be declared as if it were an argument variable, but I find this counter-intuitive.

dlap, a library which solves linear systems involving a large sparse matrix, by Anne Greenbaum and Mark Seager. end subroutine is easier to write and to understand than subroutine symmetric_solve( A, b, uplo ) real:: A(:,:), b(:) character(len=1), optional:: uplo character(len=1):: local_uplo local_uplo = 'u' if ( present(uplo)) local_uplo arguments character(len=*), intent(in):: str integer, intent(in):: i, j if ( 1 <= i .and. feynman_kac_3d, a program which demonstrates the use of the Feynman-Kac algorithm to solve Poisson's equation in a 3D ellipsoid by averaging stochastic paths to the boundary.

if any elements of mask are .true. epsilon( x ) returns the smallest value such that real( 1.0, kind(x)) + epsilon(x) is not equal to real( 1.0, kind(x)). You can optionally perform an INQUIRE statement on the logical unit after the READ statement and before the REWRITE statement. B=0 .OR.

The IOSTAT specifier can supplement or replace the END, EOR, and ERR branch transfers. line_cvt_lloyd, a library which applies Lloyd's iteration repeatedly to a set of N points, to compute a Centroidal Voronoi Tessellation (CVT) over the interior of a line segment in 1D. For example, consider the following: READ(*,*) I, J The preceding statement would cause this error if the input were: 123 'abc'. 617 severe (617): Invalid string in input FOR$IOS_F6505. distance_to_position, a program which estimates positions of cities based on a city-to-city distance table.

See your operating system documentation for more information. 1601 severe(160): Program Exception - single step FOR$IOS_PGM_SS. This summary message appears at program completion. 2981 info (298): nn floating overflow traps FOR$IOS_FLOOVFEXC. gen_hermite_rule, a program which computes and writes out a generalized Gauss-Hermite quadrature rule of given order and parameter value. An illegal value was used with the STATUS option.

extract, a program which extracts one routine from a FORTRAN77 or FORTRAN90 file; f77_cleanup, a program which makes some minor improvements to the text of a FORTRAN77 file; f77_to_f90, a program module named PortabilityLibrary use PortabilityLibrary, only: GetLastError, & ! In the following intrinsic function definitions arguments are usually named according to their types (I for integer C for character, etc.), including those detained below. Note that modules automatically create interfaces, so you need explicit interfaces only for external procedures (e.g.

lower ≤ expr), :*upper* to specify upper bound of range (i.e. Core dump file created. and fsource otherwise. Interfaces apparently never inherit implicit none, so should have their own.

The data in a list-directed input record had an invalid format, or the type of the constant was incompatible with the corresponding variable. With spaces, it’s easy to inconsistently indent some lines by, say, 3 spaces and others by 4 spaces. The optional thing makes it rather complicated. black_scholes, a library which implements some simple approaches to the Black-Scholes option valuation theory, creating graphics files for processing by gnuplot, by Desmond Higham.

grid, a library which randomly selects N distinct points from a uniform grid in the unit hypercube in M-dimensional space. A common cause of this problem is attempting to access an array with an invalid subscript. Internal function function add_ijk(ijk_1, ijk_2) type(ijk) add_ijk, ijk_1, ijk_2 intent(in) :: ijk_1, ijk_2 add_ijk = ijk(ijk_1%i + ijk_2%i, ijk_1%j + ijk_2%j, ijk_1%k + ijk_2%k) end function add_ijk ! This is an operating system error.

compass_search, a library which seeks the minimizer of a scalar function of several variables using compass search, a direct search algorithm that does not use derivatives. latin_edge_dataset, a program which creates a Latin Edge Hypercube dataset; latin_random, a library which produces N points in an M-dimensional Latin Random Hypercube. The format associated with an I/O statement that included an I/O list had no field descriptors to use in transferring those values. 61 severe or info(61): Format/variable-type mismatch FOR$IOS_FORVARMIS. A radix specifier was not between 2 and 36, inclusive.

The program tried to read from a file that was not opened for reading or was locked. 613 severe (613): End of file encountered FOR$IOS_F6501. In the following table, the first column lists error numbers returned to IOSTAT variables when an I/O error is detected. A direct access READ, WRITE, or FIND statement specified a record number outside the range specified when the file was opened. 26 severe (26): OPEN or DEFINE FILE required FOR$IOS_OPEDEFREQ.