File: getenvc.c

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/* Copyright INRIA */
/* returns setenv defined variable when getenv fails */
#include <stdio.h>

#include "../graphics/Math.h"

void C2F(getenvc)(ierr,var,buf,buflen,iflag)
     char *var ;
     char *buf ;
     int  *buflen,*ierr,*iflag;
{
  char *getenv(),*local;
  *ierr=0;
#if defined(THINK_C)||defined(__MWERKS__)
  *buf=0;
#else
  if ( (local=getenv(var)) == 0)
    {
      if ( *iflag == 1 )
	sciprint("You must define the environment variable %s\r\n",var);
      *ierr=1;
      return;
    }
  else 
    {
      strncpy(buf,local,*buflen);
      *buflen = strlen(buf);
    }
#endif
  return;
}