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C/C++ Source or Header  |  1992-11-09  |  162 b   |  14 lines
  1. #include "f2c.h"
  2.  
  3. #ifdef KR_headers
  4. double tan();
  5. double r_tan(x) real *x;
  6. #else
  7. #undef abs
  8. #include "math.h"
  9. double r_tan(real *x)
  10. #endif
  11. {
  12. return( tan(*x) );
  13. }
  14.