116 REAL FUNCTION clange( NORM, M, N, A, LDA, WORK )
136 parameter( one = 1.0e+0, zero = 0.0e+0 )
140 REAL scale, sum,
value, temp
150 INTRINSIC abs, min, sqrt
154 IF( min( m, n ).EQ.0 )
THEN
156 ELSE IF(
lsame( norm,
'M' ) )
THEN
163 temp = abs( a( i,
j ) )
167 ELSE IF( (
lsame( norm,
'O' ) ) .OR. ( norm.EQ.
'1' ) )
THEN
175 sum = sum + abs( a( i,
j ) )
179 ELSE IF(
lsame( norm,
'I' ) )
THEN
188 work( i ) = work( i ) + abs( a( i,
j ) )
196 ELSE IF( (
lsame( norm,
'F' ) ) .OR. (
lsame( norm,
'E' ) ) )
THEN
203 CALL
classq( m, a( 1,
j ), 1, scale, sum )
205 value = scale*sqrt( sum )
real function clange(NORM, M, N, A, LDA, WORK)
CLANGE returns the value of the 1-norm, Frobenius norm, infinity-norm, or the largest absolute value ...
input scalars passed by value
logical function lsame(CA, CB)
LSAME
subroutine classq(N, X, INCX, SCALE, SUMSQ)
CLASSQ updates a sum of squares represented in scaled form.
set ue cd $ADTTMP cat<< EOF > tmp f Program LinearEquations Implicit none Real j
logical function sisnan(SIN)
SISNAN tests input for NaN.