David Korn wrote: [CC:'ing Don Cragun <don.cragun at sun.com> to get some feedback for the idea below...] > > Robert Neville wrote: > > > How can I get the minimum and maximum values for integer variables? Is > > > there a counterpart to limits.h to get these values? > > > > See David Korns answers... > > ... one (long-term) idea may be to add special values to the "getconf" > > builtin to define the minimum and maximum values for "integer", "float", > > the maximum number of array entries and other shell-related limits... > > In fact the mininum values for integer values are are already > supported. > > getconf LLONG_MIN > getconf LLONG_MAX > > will give the mininum and maximum values for integer in ksh93. > > As of yet there is now max and min values for float (which > is long double).
Erm, my idea was more to have a "standard" way for all shells to get these values, e.g. the matching shell would implement their own "getconf" builtin and then override values like "SH_INTEGER_MIN", "SH_INTEGER_MAX", "SH_FLOAT_DIG" (and all other related stuff from /usr/include/iso/float_iso.h), "SH_FLOAT_MIN", "SH_FLOAT_MAX" etc. - AFAIK there are already values for /usr/bin/bc somewhere in the POSIX spec (e.g. "BC_BASE_MAX") and maybe the same could be done for the shells, too. ---- Bye, Roland -- __ . . __ (o.\ \/ /.o) roland.mainz at nrubsig.org \__\/\/__/ MPEG specialist, C&&JAVA&&Sun&&Unix programmer /O /==\ O\ TEL +49 641 7950090 (;O/ \/ \O;)
