Relational 0.8 (Default branch)


 
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Old 03-14-2009
Relational 0.8 (Default branch)

Image Relational is an interface to load relations from a file, to write relational algebra queries, and to see their result. This software has educational purposes, since it makes it possible to immediately evaluate if a query is correct or not. For developers, it provides a relational algebra Python module which can be used within other projects. License: GNU General Public License v3 Changes:
This release adds __eq__ to relation objects, makes the new default relation's format csv (as defined in RFC4180), converts a sample's relations to csv, generates optimized files in Deb postinstall (increasing loading speed), gives the relation module SQL-like delete, update, and insert commands, lets the GUI be used to insert and delete tuples, and makes showing fields of selected relations work with themes other than oxygen. Image

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isunordered(3M) 					  Mathematical Library Functions					   isunordered(3M)

NAME
isunordered - test if arguments are unordered SYNOPSIS
c99 [ flag... ] file... -lm [ library... ] #include <math.h> int isunordered(real-floating x, real-floating y); DESCRIPTION
The isunordered() macro determines whether its arguments are unordered. RETURN VALUES
Upon successful completion, the isunordered() macro returns 1 if its arguments are unordered and 0 otherwise. ERRORS
No errors are defined. USAGE
The relational and equality operators support the usual mathematical relationships between numeric values. For any ordered pair of numeric values, exactly one of the relationships (less, greater, and equal) is true. Relational operators can raise the invalid floating-point exception when argument values are NaNs. For a NaN and a numeric value, or for two NaNs, just the unordered relationship is true. This macro is a quiet (non-floating-point exception raising) version of a relational operator. It facilitates writing efficient code that accounts for quiet NaNs without suffering the invalid floating-point exception. In the SYNOPSIS section, real-floating indicates that the argument shall be an expression of real-floating type. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
isgreater(3M), isgreaterequal(3M), isless(3M), islessequal(3M), islessgreater(3M), math.h(3HEAD), attributes(5), standards(5) SunOS 5.11 12 Jul 2006 isunordered(3M)