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	Header file
		In computer programming, a header file is a text file containing small bits of program code, which is used to describe the contents of the main body of code to other modules.
		The header file provides a solution to this problem by separating out the parts that really have an effect when changed, from those that do not.
		This way the header file only changes if and when the very definition of the code changes, which is the time when other modules must also be recompiled as well.
	www.ebroadcast.com.au /lookup/encyclopedia/he/Header_file.html (306 words)

	HEADER(5)
		Header files contain at a minimum a record line, which specifies the record name, the number of segments, and the number of signals.
		Header files must contain valid signal specification lines for at least as many signals as were indicated in the record line (the first non-empty, non-comment line in the file).
		Unlike the other fields in the header file, the description may include embedded spaces; note that whitespace between the block size and description fields is not considered to be part of the description, however.
	www.physionet.org /physiotools/wag/header-5.htm (3949 words)

	The Ultimate Header File
		For standard header files, precompiled headers work well in eliminating this problem, but it is harder to justify putting your own headers into a precompiled header file since the effects of a simple change result in a massive recompilation (stdafx.h has to be recompiled).
		If the header file is actually processed, this is the traditional C idiom to keep it from being processed twice.
		Subsequent attempts to include this file in the same compilation first check this table, and if the filename is the same, the compiler doesn't even bother to open the file.
	www.flounder.com /ultimateheaderfile.htm (1284 words)

	CppHeaderFile at CodePedia
		Header files from the STL must be called without this.h extension.
		When this is the case, the header file contains declarations and the implementation file the definitions.
		A header file and its implementation file are sometimes called a Unit.
	www.codepedia.com /1/CppHeaderFile (375 words)

	Notes on Header Files
		One important difference between the header files that you create and system header files such as iostream.h is that the system file names are included between angle brackets while your own header files, which reside in the directory with your program, have their names included between quotation marks.
		The "standard" way to implement a class is to create two files: a header file containing the property declarations and function prototypes and an implementation file containing the actual function definitions.
		Both the implementation file fruit.cxx and the test program testfruit.cxx include the header file fruit2.h The sequence of commands to compile and run the test program on the DEC Alpha are as follows.
	www.apsu.edu /myersb2/notes_on_header_files.htm (1100 words)

	Header file - Wikipedia, the free encyclopedia
		When constructing libraries, header files are commonly used to describe the functionality in them, with no need of compiling the library at all, instead it is linked to the resulting object files at the end of the compilation.
		Header files in C (and C++) are meant exactly for this purpose.
		The idea of header files is not limited to C. For example, interfaces in Java are analogous to C header files.
	en.wikipedia.org /wiki/Header_file (1088 words)

	Header Files - The GNU C Library
		However, as a matter of programming style, you should not rely on this; it is better to explicitly include all the header files required for the library facilities you are using.
		The GNU C library header files have been written in such a way that it doesn't matter if a header file is accidentally included more than once; including a header file a second time has no effect.
		But it is usually better to include the header file because it may define types and macros that are not otherwise available and because it may define more efficient macro replacements for some functions.
	www.gnu.org /software/libc/manual/html_node/Header-Files.html (576 words)

	UMTRI ERD File Specification
		The header part is in an ordinary text file, and the data part is in a file with the name of the text file and the extension.bin.
		When a binary format is used, the data portion of an ERD file is a direct copy of a portion of the computer memory, corresponding to a two-dimensional array having dimensions sized to the number of channels and the number of samples.
		Disk files on workstations and desktop computers are not structured: a binary file is simply a continuous stream of bytes that continues to the end of the file.
	www.umtri.umich.edu /erd/software/erd_file.html (1876 words)

	One Big Header File
		Multiple developers have to modify the one file concurrently, because that's where everything is, leading to increased potential for merge conflicts, or slowing down people who have to wait for someone else to release a lock on the file.
		Header files in C/C++ contain far too much stuff that a) pollutes the global namespace and/or b) shouldn't really be there; see LargeScaleCppSoftwareDesign for a set of techniques to fix this.
		However, given that header files define an interface to a component; if you are using that component with sufficiently tight coupling that you need to #include the header file; you ought to have some clue what is in that.
	c2.com /cgi/wiki?OneBigHeaderFile (1183 words)

	Precompiled Headers - Using the GNU Compiler Collection (GCC) (Site not responding. Last check: 2007-10-18)
		The precompiled header file must be produced for the same language as the current compilation.
		The precompiled header file must have been produced by the same compiler binary as the current compilation is using.
		Any macros defined before the precompiled header is included must either be defined in the same way as when the precompiled header was generated, or must not affect the precompiled header, which usually means that they don't appear in the precompiled header at all.
	gcc.gnu.org /onlinedocs/gcc/Precompiled-Headers.html (867 words)

	AIR file types
		All default header files must end with the suffix.hdr and a corresponding image file with the suffix.img is expected to exist.
		You can create a header file using makeaheader, review the information in a header file using scanheader, modify the header voxel sizes with fixheader, and adjust the header global maximum with setheadermax.
		These are plain text ASCII files derived from UCF files that were originally digitized by a Java program called Tracer that is specifically designed to generate coordinates using millimeters in the AIR internal coordinate system.
	bishopw.loni.ucla.edu /AIR5/file_types.html (1295 words)

	[H]ard\|Forum - C++ Header File / Dll Question
		You use quotes to signify user-defined headers, and not headers that are in the include path for your compiler/IDE.
		The header files are used by the compiler to generate object files.
		I've never worked with header files or dlls before and it has been about 3 years since I've used c++ so this is all a bit of a pain.
	www.hardforum.com /showthread.php?t=827999 (1268 words)

	RPC III File Headers
		RPC III file headers describe the data in the file.
		If, as an example, a file header contained only ten records of keyword-value pairs, four of those records would be stored in block 1 of the header, four of them in block 2, and two in block 3.
		If the number of records in the header exceeds 1024, both the temporary file and the final data file are automatically extended.
	www.mts.com /RPC3/file_formats/file_headers.htm (748 words)

	ELF header
		A section header is one entry in the section header table; all entries are the same size.
		To support this object file family, the initial bytes of the file specify how to interpret the file, independent of the processor on which the inquiry is made and independent of the file's remaining contents.
		The file format is designed to be portable among machines of various sizes, without imposing the sizes of the largest machine on the smallest.
	docsrv.sco.com /SDK_cprog/OF_ELFHeader.html (975 words)

	ICC Profile Header
		A header file is provided for the convenience of those writing code to generate ICC profiles.
		This is the current version of the header file, which corresponds to the profile specification version 4.2.
		The ICC Header File is an element of SampleICC a public project which provides source code for profile parsing, manipulation, and application.
	www.color.org /profileheader.html (119 words)

	Executable-File Header Format (Site not responding. Last check: 2007-10-18)
		The file is stored on security-enhanced servers that help to prevent any unauthorized changes to the file.
		For each field, the offset is given relative to the beginning of the segmented header, the size of the field is defined, and a description is given.
		DW Length of the segment in the file, in bytes.
	support.microsoft.com /default.aspx?scid=kb;EN-US;q65122 (2538 words)

	C++ Header File Include Patterns
		A header file should be included only when a forward declaration would not do the job.
		The header file should be so designed that the order of header file inclusion is not important.
		The header file inclusion mechanism should be tolerant to duplicate header file inclusions.
	www.eventhelix.com /RealtimeMantra/HeaderFileIncludePatterns.htm (586 words)

	Trace File Compression Using Value Predictors
		Since the files we are interested in contain sequences of instruction addresses (PCs) and their corresponding load values, value predictors are ideal for this purpose because they are known to yield a high percentage of correct predictions.
		We compress the trace files by encoding the sequences of binary values in the files with predictor numbers.
		To decompress, we run the compressed file through the same set of predictors in the order specified in the file to recreate the original values.
	www.csl.cornell.edu /~burtscher/research/tracefilecompression (1239 words)

	QuickStart Guide - Importing Data: Header File Examples
		Being able to derive grid information directly from a data file is particularly useful if you import data with a standard format but with grid dimensions that vary from data set to data set.
		The header files are identical in that they both specify a unit 2-vector that parallels the x-axis and is defined on a 5 x 4 regular grid.
		Repeat Example 1, Step 10 (see To save the header file), to save the new header file, which should look like the one shown at the top of the next page.
	opendx.npaci.edu /docs/html/pages/qikgu028.htm (4569 words)

	Avoiding Unnecessary Header File Inclusion
		Note that the very first header file in Bar.cpp is the class Bar's class declaration file Bar.h.
		I feel that it is important for a header file to stand on its own - to not require the inclusion of other header files before it, and to allow multiple header files to be included in other places in any order.
		The header file should include any other header files that are absolutely required to get it to compile cleanly and no more.
	www.goingware.com /tips/parameters/headers.html (555 words)

	Feature-Test Macros for Header-File Control (Site not responding. Last check: 2007-10-18)
		The DEC C Run-time Library header files are coded to support the use of a number of feature-test macros.
		By default, the header files enable APIs in the DEC C RTL provided by the version of the operating system on which the compilation occurs.
		The header file also defines an osockaddr structure, which is a 4.3BSD sockaddr structure to be used for compatibility purposes.
	websumer.medoc-ias.u-psud.fr /doc/odl/decc/5763profile0007.html (2140 words)

	XPCOM Type Library File Format, Version 1.0
		XPCOM type libraries, or "typelibs", are binary interface description files generated by the XPIDL compiler.
		Unless otherwise noted, all file offsets are byte offsets from the beginning of the data pool and are 32-bit signed quantities.
		If a typelib file is encountered with a major version for which support is not available, the rest of the file should not be parsed.
	www.mozilla.org /scriptable/typelib_file.html (4485 words)

	Multi-file programs (Site not responding. Last check: 2007-10-18)
		Some programmers routinely start a file of code with prototypes for all functions defined in that file, so that they never have to worry about the order in which they give the full code for the functions.
		The main purpose of header files is to make definitions and declarations accessible to functions in more than one file.
		If functions in another code file need to be able to call it, put a prototype (declaration) for the function, but not the actual code for the function, in the header file.
	www.cs.hmc.edu /~geoff/classes/hmc.cs070.200401/notes/multi-file.html (1229 words)

	C Header Files: Breaking up code into separate source files, handling strings, mathematical functions and standardized ...
		In this C header file tutorial,we explore the use of header files in C,ways in which they can be used, and the philosophy for breaking up code into separate source files.
		C header files are used to provide a way of telling the compiler what interface specific functions require in order to be used.
		Every external function will be mentioned in a header file, including libraries that are pre-compiled into object code, and source files required to build the C program.
	computerprogramming.suite101.com /article.cfm/c_header_files (740 words)

	Checkstyle - Headers
		Alternatively, the header specification can be set directly in the header property without the need for an external file.
		Checks the header of a source file against a header that contains a regular expression for each line of the source header.
		Individual header lines must be separated by the string "\n" (even on platforms with a different line separator), and regular expressions must not span multiple lines.
	checkstyle.sourceforge.net /config_header.html (447 words)

	Splint Manual - 14. Libraries and Header File Inclusion
		Single header file processing produces a significant efficiency improvement when checking large programs split into many files, but is only safe if the same header file included in different contexts always has the same meaning (i.e., it does not depend on preprocessor variable defined differently at different inclusion sites).
		When processing a single file in a large system, a large fraction of the time is spent processing included header files.
		That is, the header file must be processed with +all-macros, and there must be no /@notfunction@/ control comments in the header.
	www.splint.org /manual/html/sec14.html (1323 words)

	Wave File Format - The Sonic Spot (Site not responding. Last check: 2007-10-18)
		Wave files may contain strings of text for specifying cue point labels, notes, etc. Strings are stored in a format where the first byte specifies the number of following ASCII text bytes in the string.
		Wave files use the standard RIFF structure which groups the files contents (sample format, digital audio samples, etc.) into separate chunks, each containing it's own header and data bytes.
		The first 8 bytes in the file is a standard RIFF chunk header which has a chunk ID of "RIFF" and a chunk size equal to the file size minus the 8 bytes used by the header.
	www.sonicspot.com /guide/wavefiles.html (4209 words)

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