1 #include "v3p_f2c.h"
2 
3 #ifdef KR_headers
4 double tan();
d_tan(x)5 double d_tan(x) doublereal *x;
6 #else
7 #undef abs
8 #include "math.h"
9 #ifdef __cplusplus
10 extern "C" {
11 #endif
12 double d_tan(doublereal *x)
13 #endif
14 {
15 return( tan(*x) );
16 }
17 #ifdef __cplusplus
18 }
19 #endif
20