In addition, NAG recommends that before calling any library routine you should read the following reference material (see Section 5):
(a) Essential Introduction
(b) Chapter Introduction
(c) Routine Document
The libraries supplied with this implementation facilitate the use of multiple threads.
Please check the following URL:
http://www.nag.co.uk/doc/inun/cl09/sa3dc/postrelease.html
for details of any new information related to the applicability or usage of this implementation.
In this section we assume that the library and the NAG include files have been installed in the directory [INSTALL_DIR].
By default [INSTALL_DIR] (see Installer's Note (in.html)) is /opt/NAG/clsa309dcl or /usr/local/NAG/clsa309dcl depending on your system; however it could have been changed by the person who did the installation. To identify [INSTALL_DIR] for this installation:
cc driver.c -mt -xtarget=opteron -I[INSTALL_DIR]/include \ [INSTALL_DIR]/lib/libnagc_spl.a -xlic_lib=sunperf -lsocket -lnsl -lpthreadwhere driver.c is your application program;
or
cc driver.c -mt -xtarget=opteron -I[INSTALL_DIR]/include \ [INSTALL_DIR]/lib/libnagc_spl.so -xlic_lib=sunperf -lsocket -lnsl -lpthreadif the shareable library is required.
However, if you prefer to link to a version of the NAG library which does not require the use of the Sun Performance Library, you may wish to use the self-contained libraries as follows:
cc driver.c -mt -xtarget=opteron -I[INSTALL_DIR]/include \ [INSTALL_DIR]/lib/libnagc_nag.a -lm -lsocket -lnsl -lpthread -lsunmathor
cc driver.c -mt -xtarget=opteron -I[INSTALL_DIR]/include \ [INSTALL_DIR]/lib/libnagc_nag.so -lm -lsocket -lnsl -lpthread -lsunmathif the shareable library is required.
If the compiled libraries, the include files and the Sun Performance Library are pointed at by symbolic links from a directory in the search path of the linker, such as /usr/lib, then you may alternatively link in the following manner:
cc driver.c -mt -xtarget=opteron -lnagc_spl -xlic_lib=sunperf -lsocket -lnsl -lpthreadThis will usually link to the shareable library in preference to the static library if both the libraries are at the same location.
To use the static library libnagc_spl.a you need the -Bstatic compiler flag to switch static binding on and -Bdynamic to switch dynamic binding on:
cc -Bstatic driver.c -mt -xtarget=opteron -lnagc_spl \ -Bdynamic -xlic_lib=sunperf -lsocket -lnsl -lpthread
Similarly for the self-contained libraries the commands
cc driver.c -mt -xtarget=opteron -lnagc_nag -lm -lsocket -lnsl -lpthread -lsunmathor
cc -Bstatic driver.c -mt -xtarget=opteron -lnagc_nag \ -Bdynamic -lm -lsocket -lnsl -lpthread -lsunmathmay be used to link to the shared library or the static library respectively.
If your application has been linked with the shareable NAG and SPL libraries then the environment variable LD_LIBRARY_PATH must be set (or extended) to allow run time linkage.
In the C shell type:
setenv LD_LIBRARY_PATH [INSTALL_DIR]/libto set LD_LIBRARY_PATH, or
setenv LD_LIBRARY_PATH [INSTALL_DIR]/lib:${LD_LIBRARY_PATH}
to extend LD_LIBRARY_PATH if you already have it set.
In the Bourne shell, type:
LD_LIBRARY_PATH=[INSTALL_DIR]/lib export LD_LIBRARY_PATHto set LD_LIBRARY_PATH, or
LD_LIBRARY_PATH=[INSTALL_DIR]/lib:${LD_LIBRARY_PATH}
export LD_LIBRARY_PATH
to extend LD_LIBRARY_PATH if you already have it set.
Note that the example material has been adapted, if necessary, from that published in the Library Manual, so that programs are suitable for execution with this implementation with no further changes. The distributed example programs should be used in preference to the versions in the Library Manual wherever possible.
The directory [INSTALL_DIR]/scripts contains four scripts nagc_example_spl, nagc_example_shar_spl, nagc_example and nagc_example_shar.
The example programs are most easily accessed by one of the commands
Each command will provide you with a copy of an example program (and its data and options file, if any), compile the program and link it with the appropriate libraries (showing you the compile command so that you can recompile your own version of the program). Finally, the executable program will be run with appropriate arguments specifying data, options and results files as needed.
The example program concerned is specified by the argument to the command, e.g.
nagc_example_spl e04uccwill copy the example program data and options files e04ucce.c, e04ucce.d and e04ucce.opt into the current directory and process them to produce the example program results in the file e04ucce.r.
The distributed example results are those obtained with the static library libnagc_spl.a, (using the SPL version of the Basic Linear Algebra Subprograms (BLAS) and Linear Algebra PACKage (LAPACK) routines). Running the examples with the self-contained library (using the NAG BLAS and LAPACK routines) may give slightly different results.
In this implementation calls to the NAG version of the following Basic Linear Algebra Subprograms (BLAS) and linear algebra routines (LAPACK) are included in the libraries libnagc_spl.a and libnagc_spl.so to avoid problems with the vendor version:
ddot dgbsvx dgebal dgeesx dgeevx dgehrd dgels dgelss dgerfs dgesdd dgesvd dgesvx dgetrf dggesx dggevx dgglse dhseqr dgtsvx dormql dpbsvx dpbtrf dposvx dpotrf dppsvx dptsvx dsgesv dspgvd dspsvx dsptrf dsysvx dsytrf dtrsen zcgesv zdotc zdotci zdotu zdotui zgbsvx zgebal zgeesx zgeevx zgehrd zgels zgelsd zgelsy zgeqlf zgeqp3 zgeqpf zgesdd zgesvd zgesvx zgetrf zggesx zggevx zggglm zgglse zgtsvx zheevr zhegv zhesvx zhetrf zhpevd zhpsvx zhseqr zhptrf zpbsvx zpbtrf zposvx zpotrf zppsvx zptsvx zspsvx zsptrf zsysvx zsytrf ztgsen ztgsna ztrsen
s10aac E(1) = 1.8715E+1
s10abc fail.code = NE_REAL_ARG_GT if X > 7.080e+2
s10acc fail.code = NE_REAL_ARG_GT if X > 7.080e+2
s13aac X(hi) = 7.083e+2
s13acc X(hi) = 1.0e+16
s13adc X(hi) = 1.0e+17
s14aac fail.code = NE_REAL_ARG_GT if X > 1.70e+2
fail.code = NE_REAL_ARG_LT if X < -1.70e+2
fail.code = NE_REAL_ARG_TOO_SMALL if ABS(X) < 2.23e-308
s14abc fail.code = NE_REAL_ARG_GT if X > 2.55e+305
s17acc fail.code = NE_REAL_ARG_GT if X > 1.0e+16
s17adc fail.code = NE_REAL_ARG_GT if X > 1.0e+16
fail.code = NE_REAL_ARG_TOO_SMALL if X <= 2.23e-308
s17aec fail.code = NE_REAL_ARG_GT if ABS(X) > 1.0e+16
s17afc fail.code = NE_REAL_ARG_GT if ABS(X) > 1.0e+16
s17agc fail.code = NE_REAL_ARG_GT if X > 1.038e+2
fail.code = NE_REAL_ARG_LT if X < -5.7e+10
s17ahc fail.code = NE_REAL_ARG_GT if X > 1.041e+2
fail.code = NE_REAL_ARG_LT if X < -5.7e+10
s17ajc fail.code = NE_REAL_ARG_GT if X > 1.041e+2
fail.code = NE_REAL_ARG_LT if X < -1.9e+9
s17akc fail.code = NE_REAL_ARG_GT if X > 1.041e+2
fail.code = NE_REAL_ARG_LT if X < -1.9e+9
s18adc fail.code = NE_REAL_ARG_TOO_SMALL if 0.0D+00 < X <= 2.23e-308
s18aec fail.code = NE_REAL_ARG_GT if ABS(X) > 7.116e+2
s18afc fail.code = NE_REAL_ARG_GT if ABS(X) > 7.116e+2
s18cdc fail.code = NE_REAL_ARG_TOO_SMALL if 0.0D+00 < X <= 2.23e-308
s19aac fail.code = NE_REAL_ARG_GT if ABS(X) >= 5.04818E+1
s19abc fail.code = NE_REAL_ARG_GT if ABS(X) >= 5.04818E+1
s19acc fail.code = NE_REAL_ARG_GT if X > 9.9726e+2
s19adc fail.code = NE_REAL_ARG_GT if X > 9.9726e+2
s21bcc fail.code = NE_REAL_ARG_LT if an argument < 1.583E-205
fail.code = NE_REAL_ARG_GE if an argument >= 3.765e+202
s21bdc fail.code = NE_REAL_ARG_LT if an argument < 2.813e-103
fail.code = NE_REAL_ARG_GT if an argument > 1.407e+102
X01AAC (pi) = 3.1415926535897932e+00 X01ABC (gamma) = 0.5772156649015328e+00
The basic parameters of the model
X02BHC = 2 X02BJC = 53 X02BKC = -1021 X02BLC = 1024 X02DJC = Nag_TRUE
Derived parameters of the floating-point arithmetic
X02AJC = 1.11022302462516e-16 X02AKC = 2.22507385850721e-308 X02ALC = 1.79769313486231e+308 X02AMC = 2.22507385850721e-308 X02ANC = 2.22507385850721e-308
Parameters of other aspects of the computing environment
X02AHC = 1.84467440737095E+19 X02BBC = 2147483647 X02BEC = 15 X02DAC = Nag_TRUE
The Library Manual is available as part of the installation or via download from the NAG website. The most up-to-date version of the documentation is accessible via the NAG website at http://www.nag.co.uk/numeric/CL/CLdocumentation.asp.
The Library Manual is supplied in the following formats:
The following main index files have been provided for these formats:
nagdoc_cl09/xhtml/FRONTMATTER/manconts.xml nagdoc_cl09/pdf/FRONTMATTER/manconts.pdf nagdoc_cl09/html/FRONTMATTER/manconts.htmlUse your web browser to navigate from here.
Advice on viewing and navigating the formats available can be found in the Online Documentation document.
In addition the following are provided:
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 Response Centre, it helps us deal with your enquiry quickly if you can quote your NAG site reference or account no and NAG product code (in this case CLSA309DCL).
The NAG websites provide information about implementation availability, descriptions of products, downloadable software, product documentation and technical reports. The NAG websites can be accessed at the following URLs:
NAG Ltd Wilkinson House Jordan Hill Road OXFORD OX2 8DR NAG Ltd Response Centre United Kingdom email: support@nag.co.uk Tel: +44 (0)1865 511245 Tel: +44 (0)1865 311744 Fax: +44 (0)1865 310139 Fax: +44 (0)1865 310139 NAG Inc 801 Warrenville Road Suite 185 Lisle, IL 60532-4332 NAG Inc Response Center USA email: support@nag.com Tel: +1 630 971 2337 Tel: +1 630 971 2337 Fax: +1 630 971 2706 Fax: +1 630 971 2706 Nihon NAG KK Hatchobori Frontier Building 2F 4-9-9 Hatchobori Chuo-ku Tokyo 104-0032 Nihon NAG Response Centre Japan email: support@nag-j.co.jp Tel: +81 3 5542 6311 Tel: +81 3 5542 6311 Fax: +81 3 5542 6312 Fax: +81 3 5542 6312 NAG Taiwan Branch Office 5F.-5, No.36, Sec.3 Minsheng E. Rd. Taipei City 10480 NAG Taiwan Response Centre Taiwan email: support@nag-gc.com Tel: +886 2 25093288 Tel: +886 2 25093288 Fax: +886 2 25091798 Fax: +886 2 25091798