Mercurial > octave-nkf
view libcruft/lapack/cladiv.f @ 7789:82be108cc558
First attempt at single precision tyeps
* * *
corrections to qrupdate single precision routines
* * *
prefer demotion to single over promotion to double
* * *
Add single precision support to log2 function
* * *
Trivial PROJECT file update
* * *
Cache optimized hermitian/transpose methods
* * *
Add tests for tranpose/hermitian and ChangeLog entry for new transpose code
| author | David Bateman <dbateman@free.fr> |
|---|---|
| date | Sun, 27 Apr 2008 22:34:17 +0200 |
| parents | |
| children |
line wrap: on
line source
COMPLEX FUNCTION CLADIV( X, Y ) * * -- LAPACK auxiliary routine (version 3.1) -- * Univ. of Tennessee, Univ. of California Berkeley and NAG Ltd.. * November 2006 * * .. Scalar Arguments .. COMPLEX X, Y * .. * * Purpose * ======= * * CLADIV := X / Y, where X and Y are complex. The computation of X / Y * will not overflow on an intermediary step unless the results * overflows. * * Arguments * ========= * * X (input) COMPLEX * Y (input) COMPLEX * The complex scalars X and Y. * * ===================================================================== * * .. Local Scalars .. REAL ZI, ZR * .. * .. External Subroutines .. EXTERNAL SLADIV * .. * .. Intrinsic Functions .. INTRINSIC AIMAG, CMPLX, REAL * .. * .. Executable Statements .. * CALL SLADIV( REAL( X ), AIMAG( X ), REAL( Y ), AIMAG( Y ), ZR, $ ZI ) CLADIV = CMPLX( ZR, ZI ) * RETURN * * End of CLADIV * END