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Source code changes of the file "Singular/svd/reflections.h" between
singular-4.2.0p3.tar.gz and singular-4.2.1.tar.gz

About: SINGULAR is a Computer Algebra System for polynomial computations, with special emphasis on commutative and non-commutative algebra, algebraic geometry, and singularity theory.

reflections.h  (singular-4.2.0p3):reflections.h  (singular-4.2.1)
skipping to change at line 98 skipping to change at line 98
N - reflection order. N - reflection order.
Output parameters: Output parameters:
X - components from 2 to N are replaced with vector V. X - components from 2 to N are replaced with vector V.
The first component is replaced with parameter Beta. The first component is replaced with parameter Beta.
Tau - scalar value Tau. If X is a null vector, Tau equals 0, Tau - scalar value Tau. If X is a null vector, Tau equals 0,
otherwise 1 <= Tau <= 2. otherwise 1 <= Tau <= 2.
This subroutine is the modification of the DLARFG subroutines from This subroutine is the modification of the DLARFG subroutines from
the LAPACK library. It has a similar functionality except for the the LAPACK library. It has a similar functionality except for the
fact that it doesnt handle errors when the intermediate results fact that it doesn't handle errors when the intermediate results
cause an overflow. cause an overflow.
MODIFICATIONS: MODIFICATIONS:
24.12.2005 sign(Alpha) was replaced with an analogous to the Fortran SIG N code. 24.12.2005 sign(Alpha) was replaced with an analogous to the Fortran SIG N code.
-- LAPACK auxiliary routine (version 3.0) -- -- LAPACK auxiliary routine (version 3.0) --
Univ. of Tennessee, Univ. of California Berkeley, NAG Ltd., Univ. of Tennessee, Univ. of California Berkeley, NAG Ltd.,
Courant Institute, Argonne National Lab, and Rice University Courant Institute, Argonne National Lab, and Rice University
September 30, 1994 September 30, 1994
*************************************************************************/ *************************************************************************/
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