sdot Interface
public interface sdot
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 SDOT = sum for I = 0 to N-1 of SX(LX+IINCX) * SY(LY+IINCY), where LX = 1 if INCX >= 0, else LX = 1+(1-N)*INCX, and LY is defined in a similar way using INCY.
Functions
public pure function dsdot(n, sx, incx, sy, incy)
Arguments
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| integer(kind=ilp), | intent(in) | :: | n | |||
| real(kind=sp), | intent(in) | :: | sx(*) | |||
| integer(kind=ilp), | intent(in) | :: | incx | |||
| real(kind=sp), | intent(in) | :: | sy(*) | |||
| integer(kind=ilp), | intent(in) | :: | incy |
Return Value real(kind=dp)
Module Procedures
public pure function stdlib_dsdot(n, sx, incx, sy, incy)
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+IINCX) * SY(LY+IINCY), where LX = 1 if INCX >= 0, else LX = 1+(1-N)*INCX, and LY is defined in a similar way using INCY.
Arguments
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| integer(kind=ilp), | intent(in) | :: | n | |||
| real(kind=sp), | intent(in) | :: | sx(*) | |||
| integer(kind=ilp), | intent(in) | :: | incx | |||
| real(kind=sp), | intent(in) | :: | sy(*) | |||
| integer(kind=ilp), | intent(in) | :: | incy |