compile fails on hypot

[Gabriel Dos Reis]

larsbj@lyx.org (Lars Gullik Bjønnes) writes:

| ../../../../libstdc++-v3/src/complex.cc: In function `_Tp std::abs(const
|    std::complex<_Tp>&) [with _Tp = double]':
| ../../../../libstdc++-v3/src/complex.cc:54: `hypot' undeclared (first use this
|    function)
| ../../../../libstdc++-v3/src/complex.cc:54: (Each undeclared identifier is
|    reported only once for each function it appears in.)
| make[4]: *** [complex.lo] Error 1                               
| 
| Linux RH 6.2 ++
| glibc-2.1.3-15 

Lars,

I checked in a patch to cure that problem.  Could test it?  Thanks.

-- Gaby
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