crg_read_b2min_slope (ul_crg)

	status.i4.v = crg_read_b2min_slope(slope.r4.r)

	This routine returns the b2min slope value from the CRG active file.

	slot		returned b2min slope

	This function returns ACNET status values as follows:

	SQL_OK			success
	SQL_xxx			error in reading database
	CBS_INVARG		null pointer passed for slope argument

	This function requires the following include files:

	ul_crg_h:crg_h, acnet_errors_h

	Related functions:

	crg_read_b2min_breakpoints_c, cnv_time_energy, crg_param_read,
	crg_tecar_read, crg_read_tuner, crg_active_file, crg_tecar_c_to_ftn

	C usage:

	int	status;
	float	slope;

	status = crg_read_b2min_slope(&slope);