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
C:\Program Files\NAG\CL08\clw6a08dalIf this folder does not exist, please consult the system manager (or the person who did the installation).
We also assume that the default shortcut for the Library command prompt is placed in the Start Menu under:
Start|All Programs|NAG|CL08If this shortcut does not exist, please consult the system manager (or the person who did the installation).
Start|All Programs|NAG|CL08|NAG C Library - Microsoft C++ (CLW6A08DAL). Command Promptmay be used to start a command prompt window with the correct settings for the INCLUDE, LIB and PATH environment variables for Microsoft C++, the Library and supplied ACML. The environment variable NAG_CLW6A08DAL, 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\CL08\clw6a08dal\batch\envvars.batIf this file is not in the default location, you can locate it by searching for the file envvars.bat containing clw6a08dal.
You may then compile and link to the NAG C Library on the command line using one of the following commands:
cl /MT driver.c nagc_acml_MT.lib cl /MT driver.c nagc_nag_MT.lib cl /MD driver.c clw6a08da_acml.lib cl /MD driver.c clw6a08da_nag.lib cl /MD driver.c nagc_nag_MD.libwhere driver.c is your application program.
The Microsoft C/C++ options:
nagc_acml_MT.lib is a static library that includes the BLAS/LAPACK from the ACML 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.
CLW6A08DA_acml.lib is a DLL import library that does not include NAG BLAS/LAPACK and links to the DLL version of ACML. CLW6A08DA_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_nag_MD.lib is an alternate version of the static library that includes NAG BLAS/LAPACK and is compiled with the /MD option. It is provided for applications which require the multi-threaded DLL C run time library to be used. For example if, in addition to the static NAG C Library, you link your code with another library that is compiled with /MD, you should compile your code with the /MD option and link with nagc_nag_MD.lib. There is not an ACML version of this library.
The DLL files in this implementation were created using the Microsoft Visual C++ .NET Release 8.0 linker and C run time libraries on a Windows 2003 system. Hence these DLLs are linked with MSVCR80.DLL. The manifest file is compiled into the DLLs creating a dependency on version '8.0.50608.0' of the C run time library. The redistributable versions of these Microsoft Visual C++ .NET Release 8.0 run time libraries are included in this product in the bin folder.
"Include Files" "C:\Program Files\NAG\CL08\clw6a08da\include" "Library Files" "C:\Program Files\NAG\CL08\clw6a08da\lib" "C:\Program Files\NAG\CL08\clw6a08da\ACML3.6.0\ifort64_mt_mp\lib" "C:\Program Files\NAG\CL08\clw6a08da\ACML3.6.0\ifort64_mp\lib"
If you wish to run executables linked to the NAG C Library in Visual Studio, please ensure that the PATH environment contains the clw6a08da\bin" and, if required, clw6a08da\ACML3.6.0\ifort64_mp\lib folders. By default these are as follows:
"C:\Program Files\NAG\CL08\clw6a08da\bin" "C:\Program Files\NAG\CL08\clw6a08da\ACML3.6.0\ifort64_mp\lib"
NB: ACML DLL files are stored in the "ifort64_mp\lib" folder.
The installation procedure will optionally set the PATH environment variable for you. Alternatively, Visual Studio (devenv.exe) may be started from the NAG C Library Command prompt described in Section 3.1.1.
If you are creating a project for one of the NAG C Library example programs, create a new "Empty project" and add the example file to the project.
The NAG C Library needs 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". Ensure that the project configuration is set to "x64". Expand "Configuration Properties", select "Linker" and then select "Input". Add the appropriate library file to the "Additional Dependencies"; 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 "Run Time Library" and change this to the appropriate version.
|NAG C Library||C Run time Libraries|
|clw6a08da_acml.lib||Multi-threaded DLL (/MD)|
|clw6a08da_nag.lib||Multi-threaded DLL (/MD)|
|nagc_nag_MD.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 2005, if a different version of Visual Studio is being used the procedure will differ slightly.
The example programs are most easily accessed using the batch files nagc_example_static_MT.bat, nagc_example_dll.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.
These batch files require that the environment variables for Microsoft C/C++ and the NAG C Library are set. In particular, the environment variable NAG_CLW6A08DA 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_static_MT d01ajcwill copy the example program into the file d01ajce.c in the current folder and process it to produce the example program results.
nagc_example_static_MT.bat links with the static library using NAG BLAS/LAPACK compiled with /MT.
To link with the ACML version of the static library compiled with /MT, use the -acml option, e.g.
nagc_example_static_MT -acml d01ajc
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, but does not have the -acml option.
The nagc_example_dll.bat batch file links to the DLL version of the NAG C Library, e.g.
nagc_example_dll d01ajc nagc_example_dll -acml d01ajcThe first command links with the DLL library using NAG BLAS/LAPACK. To link with the ACML version of the DLL, use the -acml 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.
The distributed example results are those obtained with the NAG self-contained static library nagc_nag_MT.lib (using the NAG BLAS and LAPACK routines). Running the examples with ACML BLAS or LAPACK may give slightly different results.
Please note that with the DLL version of this library, if you are not using Release 8.0 (Version 14.00.50727.42) of the Microsoft Visual C++ compiler, mixing output from your C code with output from NAG C Library functions, e.g. x04 chapter functions, may result in output files where results appear in the wrong order. This is apparent when running the NAG Example Programs, e.g. c06pfce.c, where titles written by the C example code appear after the matrices printed by the NAG C Library. This is caused by having two different C run time libraries linked to the executable, using buffered output which is flushed independently by each run time library. Similarly, code that relies on reading the same input file from C code and also via a NAG C Library function will not work as the current file pointer will not be shared by the two run time libraries. This may be seen in the failure of the NAG C Library Example Program e04nrce.c, which reads data for the C example and options for the NAG C Library from the same file.
A more detailed description of this problem may be found on the NAG web site at http://www.nag.co.uk/numeric/CL/CDLLmanifest.asp.
These problems are not found in the static versions of the NAG C Library.
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
The basic parameters of the model
X02BHC = 2 X02BJC = 53 X02BKC = -1021 X02BLC = 1024 X02DJC = Nag_TRUE
Derived parameters of 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 = 1.42724769270596e+45 X02BBC = 2147483647 X02BEC = 15 X02DAC = Nag_FALSE
A full online version of the NAG C Library Manual is supplied in the form of Portable Document Format (PDF) files, with an HTML index, in the manual folder. The introductory material is also provided as HTML files in the manual folder.
A main index file has been provided (manual\html\mark8.html) which contains a fully linked contents document pointing to all the available PDF (and where available HTML) files. This index file is available from the Start Menu under
Start|All Programs|NAG|CL08|NAG C Library Manualby default. Use your HTML browser to navigate from here.
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 and NAG product code (in this case CLW6A08DA).
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/ or http://www.nag-j.co.jp/
NAG Ltd Wilkinson House Jordan Hill Road OXFORD OX2 8DR NAG Ltd Response Centre United Kingdom email: firstname.lastname@example.org Tel: +44 (0)1865 511245 Tel: +44 (0)1865 311744 Fax: +44 (0)1865 310139 Fax: +44 (0)1865 310139 NAG Inc 1431 Opus Place, Suite 220 Downers Grove IL 60515-1362 NAG Inc Response Center USA email: email@example.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 Japan email: firstname.lastname@example.org Tel: +81 (0)3 5542 6311 Fax: +81 (0)3 5542 6312