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author | jofret | 2009-04-28 07:17:00 +0000 |
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committer | jofret | 2009-04-28 07:17:00 +0000 |
commit | 8c8d2f518968ce7057eec6aa5cd5aec8faab861a (patch) | |
tree | 3dd1788b71d6a3ce2b73d2d475a3133580e17530 /src/lib/lapack/zlassq.f | |
parent | 9f652ffc16a310ac6641a9766c5b9e2671e0e9cb (diff) | |
download | scilab2c-8c8d2f518968ce7057eec6aa5cd5aec8faab861a.tar.gz scilab2c-8c8d2f518968ce7057eec6aa5cd5aec8faab861a.tar.bz2 scilab2c-8c8d2f518968ce7057eec6aa5cd5aec8faab861a.zip |
Moving lapack to right place
Diffstat (limited to 'src/lib/lapack/zlassq.f')
-rw-r--r-- | src/lib/lapack/zlassq.f | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/src/lib/lapack/zlassq.f b/src/lib/lapack/zlassq.f deleted file mode 100644 index a209984b..00000000 --- a/src/lib/lapack/zlassq.f +++ /dev/null @@ -1,101 +0,0 @@ - SUBROUTINE ZLASSQ( N, X, INCX, SCALE, SUMSQ ) -* -* -- LAPACK auxiliary routine (version 3.1) -- -* Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. -* November 2006 -* -* .. Scalar Arguments .. - INTEGER INCX, N - DOUBLE PRECISION SCALE, SUMSQ -* .. -* .. Array Arguments .. - COMPLEX*16 X( * ) -* .. -* -* Purpose -* ======= -* -* ZLASSQ returns the values scl and ssq such that -* -* ( scl**2 )*ssq = x( 1 )**2 +...+ x( n )**2 + ( scale**2 )*sumsq, -* -* where x( i ) = abs( X( 1 + ( i - 1 )*INCX ) ). The value of sumsq is -* assumed to be at least unity and the value of ssq will then satisfy -* -* 1.0 .le. ssq .le. ( sumsq + 2*n ). -* -* scale is assumed to be non-negative and scl returns the value -* -* scl = max( scale, abs( real( x( i ) ) ), abs( aimag( x( i ) ) ) ), -* i -* -* scale and sumsq must be supplied in SCALE and SUMSQ respectively. -* SCALE and SUMSQ are overwritten by scl and ssq respectively. -* -* The routine makes only one pass through the vector X. -* -* Arguments -* ========= -* -* N (input) INTEGER -* The number of elements to be used from the vector X. -* -* X (input) COMPLEX*16 array, dimension (N) -* The vector x as described above. -* x( i ) = X( 1 + ( i - 1 )*INCX ), 1 <= i <= n. -* -* INCX (input) INTEGER -* The increment between successive values of the vector X. -* INCX > 0. -* -* SCALE (input/output) DOUBLE PRECISION -* On entry, the value scale in the equation above. -* On exit, SCALE is overwritten with the value scl . -* -* SUMSQ (input/output) DOUBLE PRECISION -* On entry, the value sumsq in the equation above. -* On exit, SUMSQ is overwritten with the value ssq . -* -* ===================================================================== -* -* .. Parameters .. - DOUBLE PRECISION ZERO - PARAMETER ( ZERO = 0.0D+0 ) -* .. -* .. Local Scalars .. - INTEGER IX - DOUBLE PRECISION TEMP1 -* .. -* .. Intrinsic Functions .. - INTRINSIC ABS, DBLE, DIMAG -* .. -* .. Executable Statements .. -* - IF( N.GT.0 ) THEN - DO 10 IX = 1, 1 + ( N-1 )*INCX, INCX - IF( DBLE( X( IX ) ).NE.ZERO ) THEN - TEMP1 = ABS( DBLE( X( IX ) ) ) - IF( SCALE.LT.TEMP1 ) THEN - SUMSQ = 1 + SUMSQ*( SCALE / TEMP1 )**2 - SCALE = TEMP1 - ELSE - SUMSQ = SUMSQ + ( TEMP1 / SCALE )**2 - END IF - END IF - IF( DIMAG( X( IX ) ).NE.ZERO ) THEN - TEMP1 = ABS( DIMAG( X( IX ) ) ) - IF( SCALE.LT.TEMP1 ) THEN - SUMSQ = 1 + SUMSQ*( SCALE / TEMP1 )**2 - SCALE = TEMP1 - ELSE - SUMSQ = SUMSQ + ( TEMP1 / SCALE )**2 - END IF - END IF - 10 CONTINUE - END IF -* - RETURN -* -* End of ZLASSQ -* - END |