Replaced non-standard IMAG function with its standard counterpart `AIMAG.

Author: ACSimon33

SRC/claqp2rk.f

@@ -378,7 +378,7 @@ SUBROUTINE CLAQP2RK( M, N, NRHS, IOFFSET, KMAX, ABSTOL, RELTOL,
       EXTERNAL           CLARF, CLARFG, CSWAP
 *     ..
 *     .. Intrinsic Functions ..
-      INTRINSIC          ABS, REAL, CONJG, IMAG, MAX, MIN, SQRT
+      INTRINSIC          ABS, REAL, CONJG, AIMAG, MAX, MIN, SQRT
 *     ..
 *     .. External Functions ..
       LOGICAL            SISNAN
@@ -599,8 +599,8 @@ SUBROUTINE CLAQP2RK( M, N, NRHS, IOFFSET, KMAX, ABSTOL, RELTOL,
 *
          IF( SISNAN( REAL( TAU(KK) ) ) ) THEN
             TAUNAN = REAL( TAU(KK) )
-         ELSE IF( SISNAN( IMAG( TAU(KK) ) ) ) THEN
-            TAUNAN = IMAG( TAU(KK) )
+         ELSE IF( SISNAN( AIMAG( TAU(KK) ) ) ) THEN
+            TAUNAN = AIMAG( TAU(KK) )
          ELSE
             TAUNAN = ZERO
          END IF

SRC/claqp3rk.f

@@ -431,7 +431,7 @@ SUBROUTINE CLAQP3RK( M, N, NRHS, IOFFSET, NB, ABSTOL,
       EXTERNAL           CGEMM, CGEMV, CLARFG, CSWAP
 *     ..
 *     .. Intrinsic Functions ..
-      INTRINSIC          ABS, REAL, CONJG, IMAG, MAX, MIN, SQRT
+      INTRINSIC          ABS, REAL, CONJG, AIMAG, MAX, MIN, SQRT
 *     ..
 *     .. External Functions ..
       LOGICAL            SISNAN
@@ -739,8 +739,8 @@ SUBROUTINE CLAQP3RK( M, N, NRHS, IOFFSET, NB, ABSTOL,
 *
          IF( SISNAN( REAL( TAU(K) ) ) ) THEN
             TAUNAN = REAL( TAU(K) )
-         ELSE IF( SISNAN( IMAG( TAU(K) ) ) ) THEN
-            TAUNAN = IMAG( TAU(K) )
+         ELSE IF( SISNAN( AIMAG( TAU(K) ) ) ) THEN
+            TAUNAN = AIMAG( TAU(K) )
          ELSE
             TAUNAN = ZERO
          END IF