DOT_PRODUCT(3I) Last changed: 1-6-98
DOT_PRODUCT - Performs dot-product multiplication of numeric or
logical vectors
DOT_PRODUCT ([VECTOR_A=]vector_a, [VECTOR_B=]vector_b)
UNICOS, UNICOS/mk, and IRIX systems
Fortran 90
The DOT_PRODUCT intrinsic function performs dot-product multiplication
of numeric or logical vectors. It accepts the following arguments:
vector_a Must be of numeric type (integer, real, or complex) or of
logical type. It must be array valued and of rank one.
vector_b Must be of numeric type if vector_a is of numeric type or of
type logical if vector_a is of type logical. It must be
array valued and of rank one. It must be of the same size
as vector_a.
DOT_PRODUCT is a transformational function. The name of this
intrinsic cannot be passed as an argument.
If the arguments are of numeric type, the type and kind type parameter
of the result are those of the expression vector_a * vector_b,
determined by the types of the arguments. If the arguments are of
type logical, the result is of type logical with the kind type
parameter of the expression vector_a .AND. vector_b.
The result is scalar.
If vector_a is of type integer or real, the result has the value
SUM( vector_a * vector_b ). If the vectors have size zero, the result
has the value 0.
If vector_a is of type complex, the result has the value
SUM(CONJG( vector_a ) * vector_b ). If the vectors have size zero,
the result has the value 0.
If vector_a is of type logical, the result has the value
ANY( vector_a .AND. vector_b ). If the vectors have size 0, the
result has the value FALSE.
DOT_PRODUCT((/ 1, 2, 3 /), (/ 2, 3, 4 /)) has the value 20.
Intrinsic Procedures Reference Manual, publication SR-2138, for the
printed version of this man page.
DOT_PRODUCT(3I) Last changed: 1-6-98
DOT_PRODUCT - Performs dot-product multiplication of numeric or
logical vectors
DOT_PRODUCT ([VECTOR_A=]vector_a, [VECTOR_B=]vector_b)
UNICOS, UNICOS/mk, and IRIX systems
Fortran 90
The DOT_PRODUCT intrinsic function performs dot-product multiplication
of numeric or logical vectors. It accepts the following arguments:
vector_a Must be of numeric type (integer, real, or complex) or of
logical type. It must be array valued and of rank one.
vector_b Must be of numeric type if vector_a is of numeric type or of
type logical if vector_a is of type logical. It must be
array valued and of rank one. It must be of the same size
as vector_a.
DOT_PRODUCT is a transformational function. The name of this
intrinsic cannot be passed as an argument.
If the arguments are of numeric type, the type and kind type parameter
of the result are those of the expression vector_a * vector_b,
determined by the types of the arguments. If the arguments are of
type logical, the result is of type logical with the kind type
parameter of the expression vector_a .AND. vector_b.
The result is scalar.
If vector_a is of type integer or real, the result has the value
SUM( vector_a * vector_b ). If the vectors have size zero, the result
has the value 0.
If vector_a is of type complex, the result has the value
SUM(CONJG( vector_a ) * vector_b ). If the vectors have size zero,
the result has the value 0.
If vector_a is of type logical, the result has the value
ANY( vector_a .AND. vector_b ). If the vectors have size 0, the
result has the value FALSE.
DOT_PRODUCT((/ 1, 2, 3 /), (/ 2, 3, 4 /)) has the value 20.
Intrinsic Procedures Reference Manual, publication SR-2138, for the
printed version of this man page.
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