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CentOS 7.0 - man page for dsdot (centos section 3)

dsdot.f(3)							      LAPACK								dsdot.f(3)

NAME
dsdot.f -
SYNOPSIS
Functions/Subroutines DOUBLE PRECISION function dsdot (N, SX, INCX, SY, INCY) DSDOT Function/Subroutine Documentation DOUBLE PRECISION function dsdot (integerN, real, dimension(*)SX, integerINCX, real, dimension(*)SY, integerINCY) DSDOT Purpose: Compute the inner product of two vectors with extended precision accumulation and result. Returns D.P. dot product accumulated in D.P., for S.P. SX and SY DSDOT = sum for I = 0 to N-1 of SX(LX+I*INCX) * SY(LY+I*INCY), where LX = 1 if INCX .GE. 0, else LX = 1+(1-N)*INCX, and LY is defined in a similar way using INCY. Parameters: N N is INTEGER number of elements in input vector(s) SX SX is REAL array, dimension(N) single precision vector with N elements INCX INCX is INTEGER storage spacing between elements of SX SY SY is REAL array, dimension(N) single precision vector with N elements INCY INCY is INTEGER storage spacing between elements of SY Returns: DSDOT DSDOT is DOUBLE PRECISION DSDOT double precision dot product (zero if N.LE.0) Author: Univ. of Tennessee Univ. of California Berkeley Univ. of Colorado Denver NAG Ltd. Date: November 2011 Further Details: References: C. L. Lawson, R. J. Hanson, D. R. Kincaid and F. T. Krogh, Basic linear algebra subprograms for Fortran usage, Algorithm No. 539, Transactions on Mathematical Software 5, 3 (September 1979), pp. 308-323. REVISION HISTORY (YYMMDD) 791001 DATE WRITTEN 890831 Modified array declarations. (WRB) 890831 REVISION DATE from Version 3.2 891214 Prologue converted to Version 4.0 format. (BAB) 920310 Corrected definition of LX in DESCRIPTION. (WRB) 920501 Reformatted the REFERENCES section. (WRB) 070118 Reformat to LAPACK style (JL) Definition at line 120 of file dsdot.f. Author Generated automatically by Doxygen for LAPACK from the source code. Version 3.4.2 Tue Sep 25 2012 dsdot.f(3)