text: #include "v3p_f2c.h"
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  #ifdef KR_headers
  double r_dim(a,b) real *a, *b;
  #else
  double r_dim(real *a, real *b)
  #endif
  {
  return( *a > *b ? *a - *b : 0);
  }
  #ifdef __cplusplus
  }
  #endif
  