Relational 0.9 (Default branch)


 
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Old 03-14-2009
Relational 0.9 (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 splits into independent packages (GUI and library), simplifies the makefile, removes information to generate Debian/Mac packages from the default source package, and makes "make source_all" generate the old-style tarball containing all the files. The relational script installed with the Debian package now passes arguments to the Python executable. Inserting and deleting from the GUI are now done on the displayed relation, not on the selected one. Image

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isgreater(3M)						  Mathematical Library Functions					     isgreater(3M)

NAME
isgreater - test if x greater than y SYNOPSIS
c99 [ flag... ] file... -lm [ library... ] #include <math.h> int isgreater(real-floating x, real-floating y); DESCRIPTION
The isgreater() macro determines whether its first argument is greater than its second argument. The value of isgreater(x, y) is equal to (x) > (y); however, unlike (x) > (y), isgreater(x, y) does not raise the invalid floating-point exception when x and y are unordered. RETURN VALUES
Upon successful completion, the isgreater() macro returns the value of (x) > (y). If x or y is NaN, 0 is returned. 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 is 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
isgreaterequal(3M), isless(3M), islessequal(3M), islessgreater(3M), isunordered(3M), math.h(3HEAD), attributes(5), standards(5) SunOS 5.11 12 Jul 2006 isgreater(3M)