File: PVAL.FT of Tape: Various/ETH/eth11-1
(Source file text)
C .................................................................. C C SUBROUTINE PVAL C C PURPOSE C EVALUATE A POLYNOMIAL FOR A GIVEN VALUE OF THE VARIABLE C C USAGE C CALL PVAL(RES,ARG,X,IDIMX) C C DESCRIPTION OF PARAMETERS C RES - RESULTANT VALUE OF POLYNOMIAL C ARG - GIVEN VALUE OF THE VARIABLE C X - VECTOR OF COEFFICIENTS, ORDERED FROM SMALLEST TO C LARGEST POWER C IDIMX - DIMENSION OF X C C REMARKS C NONE C C SUBROUTINES AND FUNCTION SUBPROGRAMS REQUIRED C NONE C C METHOD C EVALUATION IS DONE BY MEANS OF NESTED MULTIPLICATION C C .................................................................. C SUBROUTINE PVAL(RES,ARG,X,IDIMX) DIMENSION X(1) C RES=0. J=IDIMX 1 IF(J)3,3,2 2 RES=RES*ARG+X(J) J=J-1 GO TO 1 3 RETURN END C