1 #include "f2c.h"
2 
3 #ifdef KR_headers
4 double tanh();
d_tanh(x)5 double d_tanh(x) doublereal *x;
6 #else
7 #undef abs
8 #include "math.h"
9 double d_tanh(doublereal *x)
10 #endif
11 {
12 return( tanh(*x) );
13 }
14