PATCH to define tanh in libstdc++/std/valarray_meta.h

[Gabriel Dos Reis]

I forgot to define the unary function 'tanh'. The following patchlet
does the right thing.

-- Gaby
1999-11-19  Gabriel Dos Reis  <dosreis@cmla.ens-cachan.fr>

      * std/valarray_meta.h (_DEFINE_EXPR_UNARY_FUNCTION): Don't forget
        to define tanh. 

Index: std/valarray_meta.h
===================================================================
RCS file: /cvs/gcc/egcs/libstdc++/std/valarray_meta.h,v
retrieving revision 1.4
diff -p -r1.4 valarray_meta.h
*** valarray_meta.h     1999/11/05 22:26:12     1.4
--- valarray_meta.h     1999/11/19 01:18:33
*************** _Name(const valarray<_Tp>& __v)         
*** 936,942 ****
      _DEFINE_EXPR_UNARY_FUNCTION(sin)
      _DEFINE_EXPR_UNARY_FUNCTION(asin)
      _DEFINE_EXPR_UNARY_FUNCTION(sinh)    
!     _DEFINE_EXPR_UNARY_FUNCTION(tan)    
      _DEFINE_EXPR_UNARY_FUNCTION(atan)
      _DEFINE_EXPR_UNARY_FUNCTION(exp)    
      _DEFINE_EXPR_UNARY_FUNCTION(log)
--- 936,943 ----
      _DEFINE_EXPR_UNARY_FUNCTION(sin)
      _DEFINE_EXPR_UNARY_FUNCTION(asin)
      _DEFINE_EXPR_UNARY_FUNCTION(sinh)    
!     _DEFINE_EXPR_UNARY_FUNCTION(tan)
!     _DEFINE_EXPR_UNARY_FUNCTION(tanh)
      _DEFINE_EXPR_UNARY_FUNCTION(atan)
      _DEFINE_EXPR_UNARY_FUNCTION(exp)    
      _DEFINE_EXPR_UNARY_FUNCTION(log)