c { dg-do run } c { dg-options "-std=legacy" } c * * Derived from LAPACK 3.0 routine CHGEQZ * Fails on i686-pc-cygwin with gcc-2.97 snapshots at -O2 and higher * PR fortran/1645 * * David Billinghurst, (David.Billinghurst@riotinto.com) * 14 January 2001 * Rewritten by Toon Moene (toon@moene.indiv.nluug.nl) * 15 January 2001 * COMPLEX A(5,5) DATA A/25*(0.0,0.0)/ A(4,3) = (0.05,0.2)/3.0E-7 A(4,4) = (-0.03,-0.4) A(5,4) = (-2.0E-07,2.0E-07) CALL CHGEQZ( 5, A ) END SUBROUTINE CHGEQZ( N, A ) COMPLEX A(N,N), X ABS1( X ) = ABS( REAL( X ) ) + ABS( AIMAG( X ) ) DO J = 4, 2, -1 I = J TEMP = ABS1( A(J,J) ) TEMP2 = ABS1( A( J+1, J ) ) TEMPR = MAX( TEMP, TEMP2 ) IF( TEMPR .LT. 1.0 .AND. TEMPR .NE. 0.0 ) THEN TEMP = TEMP / TEMPR TEMP2 = TEMP2 / TEMPR END IF IF ( ABS1(A(J,J-1))*TEMP2 .LE. TEMP ) GO TO 90 END DO c Should not reach here, but need a statement PRINT* 90 IF ( I .NE. 4 ) THEN PRINT*,'I =', I, ' but should be 4' CALL ABORT() END IF END