table of contents
other versions
- jessie 3.5.0-4
- jessie-backports 3.7.0-1~bpo8+1
- stretch 3.7.0-2
slasq6.f(3) | LAPACK | slasq6.f(3) |
NAME¶
slasq6.f -SYNOPSIS¶
Functions/Subroutines¶
subroutine slasq6 (I0, N0, Z, PP, DMIN, DMIN1, DMIN2, DN, DNM1, DNM2)
Function/Subroutine Documentation¶
subroutine slasq6 (integerI0, integerN0, real, dimension( * )Z, integerPP, realDMIN, realDMIN1, realDMIN2, realDN, realDNM1, realDNM2)¶
SLASQ6 computes one dqd transform in ping-pong form. Used by sbdsqr and sstegr. Purpose:SLASQ6 computes one dqd (shift equal to zero) transform in ping-pong form, with protection against underflow and overflow.
I0
Author:
I0 is INTEGER First index.N0
N0 is INTEGER Last index.Z
Z is REAL array, dimension ( 4*N ) Z holds the qd array. EMIN is stored in Z(4*N0) to avoid an extra argument.PP
PP is INTEGER PP=0 for ping, PP=1 for pong.DMIN
DMIN is REAL Minimum value of d.DMIN1
DMIN1 is REAL Minimum value of d, excluding D( N0 ).DMIN2
DMIN2 is REAL Minimum value of d, excluding D( N0 ) and D( N0-1 ).DN
DN is REAL d(N0), the last value of d.DNM1
DNM1 is REAL d(N0-1).DNM2
DNM2 is REAL d(N0-2).
Univ. of Tennessee
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Date:
September 2012
Definition at line 119 of file slasq6.f.
Author¶
Generated automatically by Doxygen for LAPACK from the source code.Wed Oct 15 2014 | Version 3.4.2 |