#include "f2c.h"
#ifdef __cplusplus
extern "C" {
#endif

/* compare two strings */

#ifdef KR_headers
integer s_cmp(a0, b0, la, lb) char *a0, *b0; ftnlen la, lb;
#else
integer s_cmp(char *a0, char *b0, ftnlen la, ftnlen lb)
#endif
{
register unsigned char *a, *aend, *b, *bend;
a = (unsigned char *)a0;
b = (unsigned char *)b0;
aend = a + la;
bend = b + lb;

if(la <= lb)
  {
  while(a < aend)
         if(*a != *b)
                return( *a - *b );
         else
                { ++a; ++b; }

  while(b < bend)
         if(*b != ' ')
                return( ' ' - *b );
         else       ++b;
  }

else
  {
  while(b < bend)
         if(*a == *b)
                { ++a; ++b; }
         else
                return( *a - *b );
  while(a < aend)
         if(*a != ' ')
                return(*a - ' ');
         else       ++a;
  }
return(0);
}
#ifdef __cplusplus
}
#endif
