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.
for details of any new information related to the applicability or usage of this implementation.
Note that the NAG C Library is carefully designed so that any memory used can be reclaimed - either by the Library itself or by the user invoking calls of NAG_FREE(). However, the Library does itself depend on the use of compiler run-time and other libraries which may sometimes leak memory, and memory tracing tools used on programs linked to the NAG Library may report this. The amount of memory leaked will vary from application to application, but should not be excessive and never increase without limit as more calls are made to the NAG Library.
C:\Program Files\NAG\CL09\clw3209dalIf this folder does not exist, please consult the system manager (or the person who did the installation). In some of the following subsections, this folder is referred to as install dir.
We also assume that the default shortcut for the Library command prompt is placed in the Start Menu under:
Start|All Programs|NAG|CL09|NAG C Library (CLW3209DAL)|CLW3209DAL Command PromptIf this shortcut does not exist, please consult the system manager (or the person who did the installation). (Other shortcuts created as part of the Library installation procedure are also assumed to be in this location.)
To ensure that the NAG DLL is accessible at runtime, the install dir\bin folder must be on the path. The install dir\MKL_ia32_10.2\bin folder must also be on the path, but should appear later in the path than the install dir\bin folder, since the NAG versions of some linear algebra routines (BLAS or LAPACK) are included in the NAG libraries. (See Section 4 for details.)
To check the accessibility of the NAG DLL, run the program NAG_C_DLL_info.exe which is available from the Start Menu shortcut
Start|All Programs|NAG|CL09|NAG C Library (CLW3209DAL)|Check NAG DLL Accessibility (CLW3209DAL)
Start|All Programs|NAG|CL09|NAG C Library (CLW3209DAL)|CLW3209DAL Command Promptmay be used to start a command prompt window with the correct settings for the INCLUDE, LIB and PATH environment variables for the Library and supplied MKL. The environment variable NAG_CLW3209DAL, which is needed by the nagc_example_*.bat batch files is also set.
If the shortcut is not used, you can set the environment variables by running the batch file envvars.bat for this implementation. The default location for this file is:
C:\Program Files\NAG\CL09\clw3209dal\batch\envvars.batIf this file is not in the default location, you can locate it by searching for the file envvars.bat containing clw3209dal.
You may then compile and link to the NAG C Library on the command line using one of the following commands:
cl /MD driver.c CLW3209DA_mkl.lib cl /MD driver.c CLW3209DA_nag.lib cl /MT driver.c nagc_mkl_MT.lib mkl_intel_s.lib mkl_intel_thread.lib mkl_core.lib libiomp5mt.lib user32.lib cl /MT driver.c nagc_nag_MT.lib user32.lib cl /MD driver.c nagc_mkl_MD.lib mkl_intel_s.lib mkl_intel_thread.lib mkl_core.lib libiomp5md.lib user32.lib cl /MD driver.c nagc_nag_MD.lib user32.libwhere driver.c is your application program. (Note - this assumes use of the Microsoft C compiler cl. You may also use the Intel C compiler icl. Options for both compilers are the same.)
The C/C++ compiler options:
CLW3209DA_mkl.lib is a DLL import library that does not include NAG BLAS/LAPACK and links to the DLL version of MKL. CLW3209DA_nag.lib is a DLL import library that includes NAG BLAS/LAPACK. Both libraries have been compiled with the /MD option. This option must be used when compiling applications to be linked with either of these libraries to ensure linking to the correct C run time libraries.
nagc_mkl_MT.lib is a static library that does not include BLAS/LAPACK and should be linked to the MKL static libraries. nagc_nag_MT.lib is a static library that includes NAG BLAS/LAPACK. Both libraries have been compiled with the /MT option. This option must be used when compiling applications to be linked with either of these libraries to ensure linking to the correct C run time libraries.
nagc_mkl_MD.lib is a static library that does not include BLAS/LAPACK and should be linked to the MKL static libraries. nagc_nag_MD.lib is a static library that includes NAG BLAS/LAPACK. Both libraries have been compiled with the /MD option. This option must be used when compiling applications to be linked with either of these libraries to ensure linking to the correct C run time libraries.
More information on calling NAG DLLs is available on the NAG web site at http://www.nag.co.uk/numeric/Num_DLLhelp.asp
More information specific to this product may be available from the Post Release Information page:
If it is planned to use Microsoft Visual Studio to build programs that use the NAG C Library, each user should set the appropriate options.
Start Visual Studio and from the "Project" menu, select "Properties" and then expand the "Configuration Properties" section. Then click the "VC++ Directories" entry.
"Include Directories" "C:\Program Files\NAG\CL09\clw3209dal\include" "Library Directories" "C:\Program Files\NAG\CL09\clw3209dal\lib" "C:\Program Files\NAG\CL09\clw3209dal\MKL_ia32_10.2\lib" "Executable Directories" "C:\Program Files\NAG\CL09\clw3209dal\bin" "C:\Program Files\NAG\CL09\clw3209dal\MKL_ia32_10.2\bin"
The NAG C Library (and possibly the MKL libraries) need to be specified in the linker options. Either, right click the project name and select "Properties", or select your project and click the "Project" menu button and select "Properties". Expand "Configuration Properties", then expand "Linker" and then choose "Input". Add the appropriate library files to the "Additional Dependencies" list; please see the table below.
Additionally the appropriate C run time library option needs to be set. First add your C file, e.g. NAG example program, to the project, using the "Project" menu and "Add Existing Item". (If you don't have a C file in the project, you won't see the C++ options.) Either, right click the project name and select "Properties", or select your project and click the "Project" menu button and select "Properties". Expand "Configuration Properties" (if required), expand C/C++ and select "Code Generation". Then select "Runtime Library" and change this to the appropriate version.
|NAG C Library||MKL and other Libraries||C Run time Libraries|
|clw3209da_mkl.lib||(Not required at link time)||Multi-threaded DLL (/MD)|
|clw3209da_nag.lib||(Not required at link time)||Multi-threaded DLL (/MD)|
|nagc_mkl_MT.lib||mkl_intel_s.lib mkl_intel_thread.lib mkl_core.lib libiomp5mt.lib||Multi-threaded (/MT)|
|nagc_mkl_MD.lib||mkl_intel_s.lib mkl_intel_thread.lib mkl_core.lib libiomp5md.lib||Multi-threaded DLL (/MD)|
|nagc_nag_MD.lib||user32.lib||Multi-threaded DLL (/MD)|
If a data file needs to be attached to the standard input or the output of a program needs to be redirected to a file, we recommend that you run the executable from a command prompt window to avoid the limitations of the current version of Visual Studio.
The above instructions are specific to Microsoft Visual Studio Express 2010. If a different version of Visual Studio is being used the procedure may differ slightly.
The distributed example results are those obtained with the MKL-based DLL library CLW3209DA_mkl.dll (using the MKL BLAS and LAPACK routines). Running the examples with NAG BLAS or LAPACK may give slightly different results.
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 example programs are most easily accessed using the batch files nagc_example_dll.bat, nagc_example_static_MT.bat and nagc_example_static_MD.bat, which can be found in the "batch" folder. These batch files will provide you with a copy of an example program (and its data, 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 the results being sent to a file and to the command window.
These batch files require that the environment variables for your C/C++ compiler and the NAG C Library are set. In particular, the environment variable NAG_CLW3209DAL needs to be set to the location of the NAG C Library. Please see Section 3.1.1 for details of how to do this.
The example program concerned is specified by the argument to the command, e.g.
nagc_example_dll 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.
nagc_example_dll.bat links to the DLL version of the NAG C library using NAG BLAS/LAPACK.
To link with the MKL version of the DLL, use the -mkl option, e.g.
nagc_example_dll -mkl e04ucc
The nagc_example_static_MD batch file is used in the same way and links to the the static NAG C Library compiled with /MD.
nagc_example_static_MT e04uccAgain, it is possible to link the the MKL BLAS/LAPACK by using the -mkl option
nagc_example_static_MD -mkl e04ucc
The nagc_example_static_MT.bat batch file links to the static library using NAG BLAS/LAPACK compiled with /MT, e.g.
nagc_example_static_MT e04ucc nagc_example_static_MT -mkl e04uccThe first command links with the static library using NAG BLAS/LAPACK. To link with the MKL version of the library, use the -mkl option, as shown in the second command.
The example programs are supplied in machine-readable form. They are suitable for immediate usage. Note that the distributed example programs are those used in this implementation and may not correspond exactly with the programs published in the manual. The distributed example programs should be used in preference wherever possible.
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 nagc_mkl.lib and clw3209da_mkl.dll to avoid problems with the MKL version:
DGELS, DGERFS, DGGES, DGGESX, DGGEVX, DGGLSE, DSBEV, DSBEVX, DSBTRD, DSPGVD, DSPSV, DSPSVX, DSTEDC, DSPTRF, ZCGESV, ZGELS, ZGESVX, ZGGEVX, ZGGGLM, ZGGLSE, ZHBEV, ZHBEVX, ZHBTRD, ZTGSNA, and ZTRSM
s10aac E(1) = 1.8500e+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 < -5.6e+10 s17ahc fail.code = NE_REAL_ARG_GT if X > 1.041e+2 fail.code = NE_REAL_ARG_LT if X < -5.6e+10 s17ajc fail.code = NE_REAL_ARG_GT if X > 1.041e+2 fail.code = NE_REAL_ARG_LT if X < -1.8e+9 s17akc fail.code = NE_REAL_ARG_GT if X > 1.041e+2 fail.code = NE_REAL_ARG_LT if X < -1.8e+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) >= 4.95000e+1 s19abc fail.code = NE_REAL_ARG_GT if ABS(X) >= 4.95000e+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 < 1.579e-205 fail.code = NE_REAL_ARG_GE if an argument >= 3.774e+202 s21bdc fail.code = NE_REAL_ARG_LT if an argument < 2.820e-103 fail.code = NE_REAL_ARG_GT if an argument > 1.404e+102
X01AAC (pi) = 3.14159265358979323846e+00 X01ABC (gamma) = 0.5772156649015328606e+00
X02BHC = 2 X02BJC = 53 X02BKC = -1021 X02BLC = 1024 X02DJC = Nag_TRUEDerived parameters of floating-point arithmetic
X02AJC = 1.11022302462516e-16 X02AKC = 2.22507385850721e-308 X02ALC = 1.79769313486231e+308 X02AMC = 2.22507385850721e-308 X02ANC = 2.22507385850721e-308Parameters of other aspects of the computing environment
X02AHC = 1.42724769270596e+45 X02BBC = 2147483647 X02BEC = 15 X02DAC = Nag_FALSE
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 CLW3209DAL).
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:
http://www.nag.co.uk/, http://www.nag.com/ http://www.nag-j.co.jp/ or http://www.nag-gc.com/
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