File: setenv.c

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#include "gis.h"
static int which_env = -1; /* 0 = cur, 1 = target */

int select_current_env (void)
{
    if (which_env < 0)
    {
	G__create_alt_env();
	which_env = 0;
    }
    if (which_env != 0)
    {
	G__switch_env();
	which_env = 0;
    }

    return 0;
}

int select_target_env (void)
{
    if (which_env < 0)
    {
	G__create_alt_env();
	which_env = 1;
    }
    if (which_env != 1)
    {
	G__switch_env();
	which_env = 1;
    }

    return 0;
}