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Diffstat (limited to 'src/lib/blas/dznrm2.f')
| -rw-r--r-- | src/lib/blas/dznrm2.f | 67 |
1 files changed, 0 insertions, 67 deletions
diff --git a/src/lib/blas/dznrm2.f b/src/lib/blas/dznrm2.f deleted file mode 100644 index 205ce393..00000000 --- a/src/lib/blas/dznrm2.f +++ /dev/null @@ -1,67 +0,0 @@ - DOUBLE PRECISION FUNCTION DZNRM2( N, X, INCX ) -* .. Scalar Arguments .. - INTEGER INCX, N -* .. Array Arguments .. - COMPLEX*16 X( * ) -* .. -* -* DZNRM2 returns the euclidean norm of a vector via the function -* name, so that -* -* DZNRM2 := sqrt( conjg( x' )*x ) -* -* -* -* -- This version written on 25-October-1982. -* Modified on 14-October-1993 to inline the call to ZLASSQ. -* Sven Hammarling, Nag Ltd. -* -* -* .. Parameters .. - DOUBLE PRECISION ONE , ZERO - PARAMETER ( ONE = 1.0D+0, ZERO = 0.0D+0 ) -* .. Local Scalars .. - INTEGER IX - DOUBLE PRECISION NORM, SCALE, SSQ, TEMP -* .. Intrinsic Functions .. - INTRINSIC ABS, DIMAG, DBLE, SQRT -* .. -* .. Executable Statements .. - IF( N.LT.1 .OR. INCX.LT.1 )THEN - NORM = ZERO - ELSE - SCALE = ZERO - SSQ = ONE -* The following loop is equivalent to this call to the LAPACK -* auxiliary routine: -* CALL ZLASSQ( N, X, INCX, SCALE, SSQ ) -* - DO 10, IX = 1, 1 + ( N - 1 )*INCX, INCX - IF( DBLE( X( IX ) ).NE.ZERO )THEN - TEMP = ABS( DBLE( X( IX ) ) ) - IF( SCALE.LT.TEMP )THEN - SSQ = ONE + SSQ*( SCALE/TEMP )**2 - SCALE = TEMP - ELSE - SSQ = SSQ + ( TEMP/SCALE )**2 - END IF - END IF - IF( DIMAG( X( IX ) ).NE.ZERO )THEN - TEMP = ABS( DIMAG( X( IX ) ) ) - IF( SCALE.LT.TEMP )THEN - SSQ = ONE + SSQ*( SCALE/TEMP )**2 - SCALE = TEMP - ELSE - SSQ = SSQ + ( TEMP/SCALE )**2 - END IF - END IF - 10 CONTINUE - NORM = SCALE * SQRT( SSQ ) - END IF -* - DZNRM2 = NORM - RETURN -* -* End of DZNRM2. -* - END |