Change made. Thanks. Your documentation changes can be viewed in five minutes using links on the developer's page, http://www.postgresql.org/developer/testing. --------------------------------------------------------------------------- Andrew Maclean wrote: > In Table 9.4 of the documentation atan2 is described as follows: > atan2(*x*, *y*) inverse tangent of *x*/*y* > > I am sure it should read as: > atan2(*y*, x) inverse tangent of y/x > > This looks to be the standard C++/c atan2(y,x) function. > > You can easily test this: > If y = 2, x = 1, then degrees(atan(y/x)) =63.4 but if we proceed according > to the documentation; degrees(atan2(x,y))=degrees(atan2(1,2))=25.6 which is > not the same as degrees(atan(y/x)). > So it must be degrees(atan2(y,x))=degrees(atan2(2,1))=63.4. > > > Thanks > Andrew > > -- > ___________________________________________ > Andrew J. P. Maclean > Centre for Autonomous Systems > The Rose Street Building J04 > The University of Sydney 2006 NSW > AUSTRALIA > Ph: +61 2 9351 3283 > Fax: +61 2 9351 7474 > URL: http://www.acfr.usyd.edu.au/ > ___________________________________________ -- Bruce Momjian <bruce@xxxxxxxxxx> http://momjian.us EnterpriseDB http://www.enterprisedb.com + If your life is a hard drive, Christ can be your backup. + ---------------------------(end of broadcast)--------------------------- TIP 4: Have you searched our list archives? http://archives.postgresql.org/
