Problems VPATH, pow
Tue Aug 30 17:11:00 GMT 2005
Davies, Daniel wrote:
> Sorry for the subject-less message - I hit the send button too soon.
> -----Original Message-----
> From: Davies, Daniel
> Sent: Monday, August 29, 2005 1:57 PM
> To: 'firstname.lastname@example.org'
> Cc: Davies, Daniel
> First, let me thank everyone involved with newlib, it has certainly made
> my life easier!
> I'm cross compiling newlib 1.13.0 for powerpc-unknown-eabialtivec on
> i386-pc-solaris2.10. I'm using version 3.80 of gnu make and gcc 4.0.1.
> Two nits:
> 1. This is probably a solairs-ism. The VPATH declaration in
> newlib-1.13.0/libgloss/rs6000/Makefile.in is
> VPATH = @srcdir@ @srcdir@/..
> This does not work in Solairs.
> VPATH = @srcdir@:@srcdir@/..
> (replaced space with colon) works.
I have changed this over to use colon as gnu make accepts either space
> 2. pow(0, y) = 1 for all y > 0, e.g. 0^2 = 1. It looks like pow doesn't
> check for this case, takes the log of 0 (which is undefined), gets a
> number very close to 0 instead of an approximation to minus infinity,
> later takes exp of this number and gets 1.
Can you provide a test that demonstrates your problem? I have a simple
test which when run on mn10300 and linux, works as expected (result of
pow (0,2) is 0).
int main (void)
printf ("pow (1,2) is %g\n", pow (1, 2));
printf ("pow (0,2) is %g\n", pow (0, 2));
printf ("pow (2,2) is %g\n", pow (2, 2));
pow (1,2) is 1
pow (0,2) is 0
pow (2,2) is 4
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