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FLSG620DA Users' Note http://www.csar.cfs.ac.uk/test/software/maths/nag/mark20...
NAG Fortran Library, Mark 20
FLSG620DA
Silicon Graphics (IRIX 6) Double Precision
Users' Note
Contents
1. Introduction
2. Availability of Routines
3. General Information
3.1. Accessing the Library
3.2. Example Programs
3.3. Interpretation of Bold Italicised Terms
3.4. Explicit Output from NAG Routines
3.5. Interface Blocks
4. Routine-specific Information
5. Documentation
6. Support from NAG
7. User Feedback
Appendi
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FLSG620DA Users' Note http://www.csar.cfs.ac.uk/test/software/maths/nag/mark20... (c) Routine Document The libraries supplied with this implementation have not been compiled in a manner that facilitates the use of multiple threads. 2. Availability of Routines All routines listed in the chapter contents documents of the NAG Fortran Library Manual, Mark 20 are available in this implementation. At Mark 20, 95 new primary ("user-callable") routines and 36 thread safe equivalents of existing routines
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FLSG620DA Users' Note http://www.csar.cfs.ac.uk/test/software/maths/nag/mark20... f90 driver.f -lnag_scs -lscs This links to the NAG library as well as the Silicon Graphics BLAS and LAPACK routines in SCSL. Note that the choice of the library linked to can be overridden by specifying the application binary interface (ABI), that is -n32 or -64, and the instruction set architecture (ISA), that is -mips3 or -mips4. Gaining access to the libraries is a simple process, loading the nag module (module
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FLSG620DA Users' Note http://www.csar.cfs.ac.uk/test/software/maths/nag/mark20... returned by X02AJF in Section 4 Thus a parameter described as real should be declared as DOUBLE PRECISION in your program. If a routine accumulates an inner product in additional precision, it is using software to simulate quadruple precision. In routine documents that have been newly typeset since Mark 12 additional bold italicised terms are used in the published e
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FLSG620DA Users' Note http://www.csar.cfs.ac.uk/test/software/maths/nag/mark20... their use is recommended in preference to writing your own declarations. The NAG Fortran Library Interface Block files are organised by Library chapter. The module names are: nag_f77_a_chapter nag_f77_c_chapter nag_f77_d_chapter nag_f77_e_chapter nag_f77_f_chapter nag_f77_g_chapter nag_f77_h_chapter nag_f77_m_chapter nag_f77_p_chapter nag_f77_s_chapter nag_f77_x_chapter These are supplied in pre-compiled form (.mod
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FLSG620DA Users' Note http://www.csar.cfs.ac.uk/test/software/maths/nag/mark20... ******************************************************************* * .. Executable Statements .. WRITE (NOUT,*) 'S18DEF Example Program Results' * Skip heading in data file READ (NIN,*) WRITE (NOUT,*) WRITE (NOUT,99999) 'Calling with N =', N WRITE (NOUT,*) WRITE (NOUT,*) +' FNU Z SCALE CY(1) CY(2) + NZ IFAIL' WRITE
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FLSG620DA Users' Note http://www.csar.cfs.ac.uk/test/software/maths/nag/mark20... F(2) = 1.0D-14 S10AAF E(1) = 18.50 S10ABF E(1) = 708.0 S10ACF E(1) = 708.0 S13AAF x(hi) = 708.3 S13ACF x(hi) = 5.6D+14 S13ADF x(hi) = 5.6D+14 S14AAF IFAIL = 1 if X > 170.0 IFAIL = 2 if X < -170.0 IFAIL = 3 if abs(X) < 2.23D-308 S14ABF IFAIL = 2 if X > 2.55D+305 S15ADF x(hi) = 26.6 x(low) = -6.25 S15AEF x(hi) = 6.25 S17ACF IFAIL = 1 if X > 5.6D+14 S17ADF
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FLSG620DA Users' Note http://www.csar.cfs.ac.uk/test/software/maths/nag/mark20... (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'00100000000000
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FLSG620DA Users' Note http://www.csar.cfs.ac.uk/test/software/maths/nag/mark20... Document Format (PDF) files, with an HTML index, in the NAGdoc directory. The introductory material is also provided as HTML files in the NAGdoc directory. A main index file has been provided (NAGdoc/fl/html/mark20.html) which contains a fully linked contents document pointing to all the available PDF (and where available HTML) files. Use your HTML browser to navigate from here. In addition the following are provid
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FLSG620DA Users' Note http://www.csar.cfs.ac.uk/test/software/maths/nag/mark20... Many factors influence the way NAG's products and services evolve and your ideas are invaluable in helping us to ensure that we meet your needs. If you would like to contribute to this process we would be delighted to receive your comments. Please contact your local NAG Response Centre (shown below). Appendix - Contact Addresses NAG Ltd Wilkinson House Jordan Hill Road OXFORD OX2 8DR NAG Lt
