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FLSG620DA Users' Note

http://www.csar.cfs.ac.uk/test/software/maths/nag/mark20...

8 of 10

18/08/2004 12:11

(f) X01

The values of the mathematical constants are:

X01AAF (PI)    = 3.1415926535897932

X01ABF (GAMMA) = 0.5772156649015329

(g) X02

The values of the machine constants are:

The basic parameters of the model

X02BHF =     2

X02BJF =    53

X02BKF =  -1021

X02BLF =  1024

X02DJF =  .TRUE.

Derived parameters of the floating-point arithmetic

X02AJF = Z'3CA0000000000001' ( 1.11022302462516D-16 )

X02AKF = Z'0010000000000000' ( 2.22507385850721D-308 )

X02ALF = Z'7FEFFFFFFFFFFFFF' ( 1.79769313308 )

X02AMF = Z'0010000000000000' ( 2.22507385850721D-308 )

X02ANF = Z'0020000000000000' ( 4.45014771701441D-308 )

Parameters of other aspects of the computing environment

X02AHF = Z'4300000000000000' ( 5.6294995314 )

X02BBF = 2147483647

X02BEF = 15

X02DAF = .FALSE.

(h) X04

The default output units for error and advisory messages for those routines which can produce
explicit output are both Fortran Unit 6.

It is not possible to use the routines X04ACF and X04ADF with the f90 compiler.

(i) X05

The finest granularity of wall-clock time available on this system is one second, so the seventh
element of the integer array passed as a parameter to X05AAF will always be returned with the
value 0.

5. Documentation

Each supported NAG Fortran Library site is ordinarily provided with a printed copy of the NAG
Fortran Library Manual (or Update) and Introductory Guide. Additional copies are available for
purchase; please refer to the NAG websites or contact your local NAG Response Centre for
current prices (see 

Section 6

).

A full on-line version of the NAG Fortran Library Manual is supplied in the form of Portable

Содержание SILICON GRAPHICS (IRIX 6) DOUBLE PRECISION FLSG620DA

Страница 1: ...nformation 5 Documentation 6 Support from NAG 7 User Feedback Appendix Contact Addresses 1 Introduction This document is essential reading for every user of the NAG Fortran Library Implementation specified in the title It provides implementation specific detail that augments the information provided in the NAG Fortran Library Manual and Introductory Guide Wherever those manuals refer to the Users ...

Страница 2: ...rms for the following combinations of Application Binary Interfaces ABI and Instruction Set Architectures ISA high performance 32 bit n32 mode using mips3 high performance 32 bit n32 mode using mips4 64 bit mode using mips3 64 bit mode using mips4 3 1 Accessing the Library You may link to the NAG Fortran Library in the following manner f77 driver f lnag or f90 driver f lnag where driver f is the u...

Страница 3: ... program results In the NAG Fortran Library Manual routine documents that have been typeset since Mark 12 present the example programs in a generalised form using bold italicised terms as described in Section 3 3 In other routine documents the example programs are in single precision and require modification for use with double precision routines This conversion can entail Changing REAL or COMPLEX...

Страница 4: ...ers to the LAPACK routine name DGETRF cpotrs ZPOTRS 3 4 Explicit Output from NAG Routines Certain routines produce explicit error messages and advisory messages via output units which either have default values or can be reset by using X04AAF for error messages and X04ABF for advisory messages The default values are given in Section 4 The maximum record lengths of error messages and advisory messa...

Страница 5: ... NAG Fortran Library that your program calls directly Often only one USE statement will be required Delete all EXTERNAL statements for NAG Fortran Library routines These are now declared in the module s Delete the type declarations for any NAG Fortran Library functions These are now declared in the module s These changes are illustrated by showing the conversion of the Fortran 77 version of the ex...

Страница 6: ...Information Any further information which applies to one or more routines in this implementation is listed below chapter by chapter a D03 The example programs for D03RAF and D03RBF take much longer to run than other examples b F06 F07 and F08 In this implementation calls to the Basic Linear Algebra Subprograms BLAS and linear algebra routines LAPACK can be resolved by calls to SCSL c G02 The value...

Страница 7: ... 3 27D 4 IFAIL 5 if abs Z or FNU N 1 1 07D 9 S17DEF IFAIL 2 if imag Z 700 0 IFAIL 3 if abs Z or FNU N 1 3 27D 4 IFAIL 4 if abs Z or FNU N 1 1 07D 9 S17DGF IFAIL 3 if abs Z 1 02D 3 IFAIL 4 if abs Z 1 04D 6 S17DHF IFAIL 3 if abs Z 1 02D 3 IFAIL 4 if abs Z 1 04D 6 S17DLF IFAIL 2 if abs Z 3 93D 305 IFAIL 4 if abs Z or FNU N 1 3 27D 4 IFAIL 5 if abs Z or FNU N 1 1 07D 9 S18ADF IFAIL 2 if 0 0 X 2 23D 30...

Страница 8: ...0000000000000 5 62949953421312D 14 X02BBF 2147483647 X02BEF 15 X02DAF FALSE h X04 The default output units for error and advisory messages for those routines which can produce explicit output are both Fortran Unit 6 It is not possible to use the routines X04ACF and X04ADF with the f90 compiler i X05 The finest granularity of wall clock time available on this system is one second so the seventh ele...

Страница 9: ... to contact one of the NAG Response Centres see below b NAG Response Centres The NAG Response Centres are available for general enquiries from all users and also for technical queries from sites with an annually licensed product or support service The Response Centres are open during office hours but contact is possible by fax email and phone answering machine at all times When contacting a Respon...

Страница 10: ...ouse Jordan Hill Road OXFORD OX2 8DR NAG Ltd Response Centre United Kingdom email infodesk nag co uk Tel 44 0 1865 511245 Tel 44 0 1865 311744 Fax 44 0 1865 310139 Fax 44 0 1865 311755 NAG Inc 1400 Opus Place Suite 200 Downers Grove IL 60515 5702 NAG Inc Response Center USA email infodesk nag com Tel 1 630 971 2337 Tel 1 630 971 2345 Fax 1 630 971 2706 Fax 1 630 971 2346 NAG GmbH Schleißheimerstra...

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