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IRIX 6.2 Development Libraries
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SGI IRIX 6.2 Development Libraries.iso
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dzsum1.z
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dzsum1
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1996-03-14
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67 lines
DDDDZZZZSSSSUUUUMMMM1111((((3333FFFF)))) DDDDZZZZSSSSUUUUMMMM1111((((3333FFFF))))
NNNNAAAAMMMMEEEE
DZSUM1 - take the sum of the absolute values of a complex vector and
returns a double precision result
SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
DOUBLE PRECISION FUNCTION DZSUM1( N, CX, INCX )
INTEGER INCX, N
COMPLEX*16 CX( * )
PPPPUUUURRRRPPPPOOOOSSSSEEEE
DZSUM1 takes the sum of the absolute values of a complex vector and
returns a double precision result.
Based on DZASUM from the Level 1 BLAS.
The change is to use the 'genuine' absolute value.
Contributed by Nick Higham for use with ZLACON.
AAAARRRRGGGGUUUUMMMMEEEENNNNTTTTSSSS
N (input) INTEGER
The number of elements in the vector CX.
CX (input) COMPLEX*16 array, dimension (N)
The vector whose elements will be summed.
INCX (input) INTEGER
The spacing between successive values of CX. INCX > 0.
PPPPaaaaggggeeee 1111