.TH "<avr/version.h>: avr-libc version macros" 3avr "Wed Jun 4 2014" "Version 1.8.0svn" "avr-libc" \" -*- nroff -*-
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.SH NAME
<avr/version.h>: avr-libc version macros \- 
.SS "Macros"

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.RI "#define \fB__AVR_LIBC_VERSION_STRING__\fP   '1\&.8\&.0svn'"
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.RI "#define \fB__AVR_LIBC_VERSION__\fP   10800UL"
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.RI "#define \fB__AVR_LIBC_DATE_STRING__\fP   '20111229'"
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.RI "#define \fB__AVR_LIBC_DATE_\fP   20111229UL"
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.RI "#define \fB__AVR_LIBC_MAJOR__\fP   1"
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.RI "#define \fB__AVR_LIBC_MINOR__\fP   8"
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.RI "#define \fB__AVR_LIBC_REVISION__\fP   0"
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.SH "Detailed Description"
.PP 

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#include <avr/version\&.h> 

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.PP
.PP
This header file defines macros that contain version numbers and strings describing the current version of avr-libc\&.
.PP
The version number itself basically consists of three pieces that are separated by a dot: the major number, the minor number, and the revision number\&. For development versions (which use an odd minor number), the string representation additionally gets the date code (YYYYMMDD) appended\&.
.PP
This file will also be included by \fC<\fBavr/io\&.h\fP>\fP\&. That way, portable tests can be implemented using \fC<\fBavr/io\&.h\fP>\fP that can be used in code that wants to remain backwards-compatible to library versions prior to the date when the library version API had been added, as referenced but undefined C preprocessor macros automatically evaluate to 0\&. 
.SH "Macro Definition Documentation"
.PP 
.SS "#define __AVR_LIBC_DATE_   20111229UL"
Numerical representation of the release date\&. 
.SS "#define __AVR_LIBC_DATE_STRING__   '20111229'"
String literal representation of the release date\&. 
.SS "#define __AVR_LIBC_MAJOR__   1"
Library major version number\&. 
.SS "#define __AVR_LIBC_MINOR__   8"
Library minor version number\&. 
.SS "#define __AVR_LIBC_REVISION__   0"
Library revision number\&. 
.SS "#define __AVR_LIBC_VERSION__   10800UL"
Numerical representation of the current library version\&.
.PP
In the numerical representation, the major number is multiplied by 10000, the minor number by 100, and all three parts are then added\&. It is intented to provide a monotonically increasing numerical value that can easily be used in numerical checks\&. 
.SS "#define __AVR_LIBC_VERSION_STRING__   '1\&.8\&.0svn'"
String literal representation of the current library version\&. 
.SH "Author"
.PP 
Generated automatically by Doxygen for avr-libc from the source code\&.