bidiagonal reduction code function matching
DGEQRT --- LQR1
DTSQRT --- LQR2
DLARTB --- LUP1
DSSRFT --- LUP2
DGEQRT --- RQR1
DTSQRT --- RQR2
DLARTB --- RUP1
DSSRFT --- RUP2
DGEQRT --- LQR1
DTSQRT --- LQR2
DLARTB --- LUP1
DSSRFT --- LUP2
DGEQRT --- RQR1
DTSQRT --- RQR2
DLARTB --- RUP1
DSSRFT --- RUP2