| iamax(3) | LAPACK | iamax(3) |
iamax - iamax: argmax_i | real( x_i ) | + | imag( x_i ) |
integer function icamax (n, cx, incx)
ICAMAX integer function idamax (n, dx, incx)
IDAMAX integer function isamax (n, sx, incx)
ISAMAX integer function izamax (n, zx, incx)
IZAMAX
ICAMAX
Purpose:
ICAMAX finds the index of the first element having maximum |Re(.)| + |Im(.)|
Parameters
N is INTEGER
number of elements in input vector(s)
CX
CX is COMPLEX array, dimension ( 1 + ( N - 1 )*abs( INCX ) )
INCX
INCX is INTEGER
storage spacing between elements of CX
Author
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Further Details:
jack dongarra, linpack, 3/11/78.
modified 3/93 to return if incx .le. 0.
modified 12/3/93, array(1) declarations changed to array(*)
IDAMAX
Purpose:
IDAMAX finds the index of the first element having maximum absolute value.
Parameters
N is INTEGER
number of elements in input vector(s)
DX
DX is DOUBLE PRECISION array, dimension ( 1 + ( N - 1 )*abs( INCX ) )
INCX
INCX is INTEGER
storage spacing between elements of DX
Author
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Further Details:
jack dongarra, linpack, 3/11/78.
modified 3/93 to return if incx .le. 0.
modified 12/3/93, array(1) declarations changed to array(*)
ISAMAX
Purpose:
ISAMAX finds the index of the first element having maximum absolute value.
Parameters
N is INTEGER
number of elements in input vector(s)
SX
SX is REAL array, dimension ( 1 + ( N - 1 )*abs( INCX ) )
INCX
INCX is INTEGER
storage spacing between elements of SX
Author
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Further Details:
jack dongarra, linpack, 3/11/78.
modified 3/93 to return if incx .le. 0.
modified 12/3/93, array(1) declarations changed to array(*)
IZAMAX
Purpose:
IZAMAX finds the index of the first element having maximum |Re(.)| + |Im(.)|
Parameters
N is INTEGER
number of elements in input vector(s)
ZX
ZX is COMPLEX*16 array, dimension ( 1 + ( N - 1 )*abs( INCX ) )
INCX
INCX is INTEGER
storage spacing between elements of ZX
Author
Univ. of California Berkeley
Univ. of Colorado Denver
NAG Ltd.
Further Details:
jack dongarra, 1/15/85.
modified 3/93 to return if incx .le. 0.
modified 12/3/93, array(1) declarations changed to array(*)
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| Thu Aug 7 2025 17:26:25 | Version 3.12.0 |