powerpc-apple-darwin8.11.0 ldexpl: cannot handle zero exponents?

[Simon Josefsson]

espresso:~/daily/gnulib/dummy-0/gltests jas$ ./test-ldexpl 
test-ldexpl.c:99: assertion failed
Abort trap
espresso:~/daily/gnulib/dummy-0/gltests jas$

The code reads:

    x = 1.73205L;
    y = ldexpl (x, 0); ASSERT (y == x);

Printing the values yield:

x 1.732050 y -0.000000

I guess the Mac OS X 10.4 ldexpl implementation doesn't handle zero
exponents properly?

/Simon

configure:63837: checking whether ldexpl() can be used without linking with libm
configure:63865: gcc -std=gnu99 -o conftest -g -O2 -I/opt/local/include  
conftest.c    >&5
configure:63872: $? = 0
configure:63893: result: yes
configure:63967: checking whether ldexpl works
configure:64002: gcc -std=gnu99 -o conftest -g -O2 -I/opt/local/include  
conftest.c     >&5
configure:64006: $? = 0
configure:64012: ./conftest
configure:64016: $? = 0
configure:64034: result: yes
configure:64051: checking whether ldexpl is declared
configure:64081: gcc -std=gnu99 -c -g -O2 -I/opt/local/include conftest.c >&5
configure:64088: $? = 0
configure:64103: result: yes