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! Copyright 2019 Wojciech Kosior
! This is free and unencumbered software released into the public domain.
! Anyone is free to copy, modify, publish, use, compile, sell, or
! distribute this software, either in source code form or as a compiled
! binary, for any purpose, commercial or non-commercial, and by any
! means.
! In jurisdictions that recognize copyright laws, the author or authors
! of this software dedicate any and all copyright interest in the
! software to the public domain. We make this dedication for the benefit
! of the public at large and to the detriment of our heirs and
! successors. We intend this dedication to be an overt act of
! relinquishment in perpetuity of all present and future rights to this
! software under copyright law.
! THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
! EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
! MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
! IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
! OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
! ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
! OTHER DEALINGS IN THE SOFTWARE.
! For more information, please refer to <http://unlicense.org/>
MODULE dotmat
IMPLICIT none
PRIVATE
PUBLIC :: dotmull
PRIVATE :: dotmull_4, dotmull_8, dotmull_16
INTERFACE dotmull
procedure dotmull_4, dotmull_8, dotmull_16
END INTERFACE dotmull
CONTAINS
FUNCTION dotmull_4(A, B) result(C)
IMPLICIT none
real(kind=4), intent(in), dimension(1:,1:) :: A, B
real(kind=4), dimension(size(A, 1), size(B, 2)) :: C
integer :: i, j
DO j = 1, size(B, 2)
DO i = 1, size(A, 1)
C(i,j) = dot_product(A(i,:), B(:,j))
END DO
END DO
END FUNCTION dotmull_4
FUNCTION dotmull_8(A, B) result(C)
IMPLICIT none
real(kind=8), intent(in), dimension(1:,1:) :: A, B
real(kind=8), dimension(size(A, 1), size(B, 2)) :: C
integer :: i, j
DO j = 1, size(B, 2)
DO i = 1, size(A, 1)
C(i,j) = dot_product(A(i,:), B(:,j))
END DO
END DO
END FUNCTION dotmull_8
FUNCTION dotmull_16(A, B) result(C)
IMPLICIT none
real(kind=16), intent(in), dimension(1:,1:) :: A, B
real(kind=16), dimension(size(A, 1), size(B, 2)) :: C
integer :: i, j
DO j = 1, size(B, 2)
DO i = 1, size(A, 1)
C(i,j) = dot_product(A(i,:), B(:,j))
END DO
END DO
END FUNCTION dotmull_16
END MODULE dotmat
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