[Rd] R 1.3.1 fails 'make check' on arm in the Bessel example (PR#1097)

edd@debian.org edd@debian.org
Fri, 21 Sep 2001 06:54:39 +0200 (MET DST)

Debian tries to build its packages on a variety of platforms.  The arm
platform compiled 0.90.1 (the last Debian release before the Debian package
required an Atlas library, something we no longer require) failed in 'make
check'. The log snippet follows; I traced this to the example(Bessel) code.
> matplot(nu, t(outer(xx,nu, besselI)), type = 'l', ylim = c(-50,200),
+         main = expression(paste("Bessel ",I[nu](x)," for fixed ", x,
+                                 ",  as ",f(nu))),
+         xlab = expression(nu))
Error in title(main = main, sub = sub, xlab = xlab, ylab = ylab, ...) :
        Metric information not yet available for this device
        In addition: Warning messages:
        1: Nonfinite axis limits [GScale(nan,nan,1, .); log=0]
        2: relative range of values = 9.0072e+15 * EPS, is small (axis 1).
        3: Nonfinite axis limits [GScale(-inf,inf,2, .); log=0]
        4: relative range of values = 9.0072e+15 * EPS, is small (axis 2).
        Execution halted

Casual inspection suggests that GScale(nan,nan,1, .) is probably
incorrect. Now, src/nmath/bessel* provide the Bessel functions but does this
reflect a potential libc bug in IEEE handling?

I have also asked on the debian-arm mailing list, but no result so far. I
have some access to an arm box and could compile small test cases if that

--please do not edit the information below--
 platform = i386-pc-linux-gnu
 arch = i386
 os = linux-gnu
 system = i386, linux-gnu
 status =
 major = 1
 minor = 3.1
 year = 2001
 month = 08
 day = 31
 language = R
Search Path:
 .GlobalEnv, package:ctest, Autoloads, package:base

Better to have an approximate answer to the right question 
than a precise answer to the wrong question. -- John Tukey

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