Re: [HACKERS] floating point representation

[Hiroshi Inoue]

Tom Lane wrote: > > Hiroshi Inoue <[EMAIL PROTECTED]> writes: > > The 7.1-release seems near. > > May I provide the followings ? > > SET FLOAT4_PRECISION TO .. > > SET FLOAT8_PRECISION TO .. > > > Or must we postpone to fix it ? > > This seems a small enough change that I do not fear fixing it at this > late date. However, I do not like the idea of making the SET variables > be just number of digits precision. As long as we're going to have SET > variables, let's go for the full flexibility offered by sprintf: define > the SET variables as the sprintf format strings to use. Agreed. > The defaults > would be "%.7g" and "%.17g" (or thereabouts, not sure what number of > digits we are currently using). Wouldn't changing current '%.6g','%.15g'(on many platforms) cause the regression test failure ? > This way, someone could select the C99 > %a format if he knew that his libc supported it. Or he could force a > particular format like %7.3f if that's what he needed in a specific > application. > Regards, Hiroshi Inoue