"Keith OHara" <k-ohara5...@oco.net> writes: > On Wed, 13 Mar 2013 02:44:33 -0700, <d...@gnu.org> wrote: > >> If left and right have equal values to start with, C++ is still not >> required to have left and right receive the same value after >> >> left = left*factor + offset; >> right = right*factor + offset; > > The C standard requires the variables to be equal after assignment. > C99 5.4.2.2: "Except for assignment and cast (which remove all extra > range and precision), the values of operations with floating operands > [...] are evaluated to a format whose range and precision may be > greater than required by the type."
"May be". It may be greater for left*factor, and not greater for right*factor. The reduction of extra precision happens only _after_ adding offset. -- David Kastrup _______________________________________________ lilypond-devel mailing list lilypond-devel@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-devel
