karl@haddock.ISC.COM (Karl Heuer) (04/09/88)
In article <10068@tut.cis.ohio-state.edu> lvc@tut.cis.ohio-state.edu (Lawrence V. Cipriani) writes: >I was shocked when I read that abs() was taken out of <math.h> ... abs() is a >math function and <math.h> is where it belongs! Taken out? Was it ever *in* math.h? I just checked two systems (one BSD, one USGish), and neither declares the abs() function in any header. (Why should they? The default declaration suffices.$) Neither one puts the code in libm.a, either. I don't think it's clear that it "belongs" in <math.h>. Karl W. Z. Heuer (ima!haddock!karl or karl@haddock.isc.com), The Walking Lint $This is not my argument, but (my interpretation of) the implementors'.
lvc@tut.cis.ohio-state.edu (Lawrence V. Cipriani) (04/09/88)
In article <3377@haddock.ISC.COM>, karl@haddock.ISC.COM (Karl Heuer) writes: > In article <10068@tut.cis.ohio-state.edu> lvc@tut.cis.ohio-state.edu (Lawrence V. Cipriani) writes: > >I was shocked when I read that abs() was taken out of <math.h> ... abs() is a > >math function and <math.h> is where it belongs! > > Taken out? Was it ever *in* math.h? I just checked two systems (one BSD, one Thats what the rationale said, but the rational is wrong, see 4.10.6. If it was in <math.h> then it should have stayed there, vendors stupid compilers notwithstanding. I don't use <math.h> so I didn't know any better when I read 4.10.6. > USGish), and neither declares the abs() function in any header. (Why should > they? The default declaration suffices.$) Neither one puts the code in > libm.a, either. I don't think it's clear that it "belongs" in <math.h>. What default declaration suffices for what? The argument types need to be declared with a function prototype. I could live without abs() being in <math.h> as long as it was in *some* header files. -- Larry Cipriani, AT&T Network Systems and Ohio State University Domain: lvc@tut.cis.ohio-state.edu Path: ...!cbosgd!osu-cis!tut.cis.ohio-state.edu!lvc (weird but right)