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C/C++ Source or Header  |  1994-07-28  |  227b  |  16 lines
  1. #include "f2c.h"
  2.  
  3. #define log10e 0.43429448190325182765
  4.  
  5. #ifdef KR_headers
  6. double log();
  7. double r_lg10(x) real *x;
  8. #else
  9. #undef abs
  10. #include "math.h"
  11. double r_lg10(real *x)
  12. #endif
  13. {
  14. return( log10e * log(*x) );
  15. }
  16.