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Diffstat (limited to 'gcc/testsuite/gfortran.dg/pr43796.f90')
| -rw-r--r-- | gcc/testsuite/gfortran.dg/pr43796.f90 | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/gcc/testsuite/gfortran.dg/pr43796.f90 b/gcc/testsuite/gfortran.dg/pr43796.f90 new file mode 100644 index 000000000..2e98d7ca8 --- /dev/null +++ b/gcc/testsuite/gfortran.dg/pr43796.f90 @@ -0,0 +1,51 @@ +! { dg-do compile } +! { dg-options "-O2 -fcheck=bounds" } + + FUNCTION F06FKFN(N,W,INCW,X,INCX) + IMPLICIT NONE + INTEGER, PARAMETER :: WP = KIND(0.0D0) + REAL (KIND=WP) :: F06FKFN + REAL (KIND=WP), PARAMETER :: ONE = 1.0E+0_WP + REAL (KIND=WP), PARAMETER :: ZERO = 0.0E+0_WP + INTEGER, INTENT (IN) :: INCW, INCX, N + REAL (KIND=WP), INTENT (IN) :: W(*), X(*) + REAL (KIND=WP) :: ABSYI, NORM, SCALE, SSQ + INTEGER :: I, IW, IX + REAL (KIND=WP), EXTERNAL :: F06BMFN + INTRINSIC ABS, SQRT + IF (N<1) THEN + NORM = ZERO + ELSE IF (N==1) THEN + NORM = SQRT(W(1))*ABS(X(1)) + ELSE + IF (INCW>0) THEN + IW = 1 + ELSE + IW = 1 - (N-1)*INCW + END IF + IF (INCX>0) THEN + IX = 1 + ELSE + IX = 1 - (N-1)*INCX + END IF + SCALE = ZERO + SSQ = ONE + DO I = 1, N + IF ((W(IW)/=ZERO) .AND. (X(IX)/=ZERO)) THEN + ABSYI = SQRT(W(IW))*ABS(X(IX)) + IF (SCALE<ABSYI) THEN + SSQ = 1 + SSQ*(SCALE/ABSYI)**2 + SCALE = ABSYI + ELSE + SSQ = SSQ + (ABSYI/SCALE)**2 + END IF + END IF + IW = IW + INCW + IX = IX + INCX + END DO + NORM = F06BMFN(SCALE,SSQ) + END IF + F06FKFN = NORM + RETURN + END FUNCTION F06FKFN + |