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decus_20tap2_198111
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decus/20-0026/pder.doc
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SUBROUTINE PDER
PURPOSE
FIND DERIVATIVE OF A POLYNOMIAL
USAGE
CALL PDER(Y,IDIMY,X,IDIMX)
DESCRIPTION OF PARAMETERS
Y - VECTOR OF COEFFICIENTS FOR DERIVATIVE, ORDERED FROM
SMALLEST TO LARGEST POWER
IDIMY - DIMENSION OF Y (EQUAL TO IDIMX-1)
X - VECTOR OF COEFFICIENTS FOR ORIGINAL POLYNOMIAL,
ORDERED FROM SMALLEST TO LARGEST POWER
IDIMX - DIMENSION OF X
REMARKS
NONE
SUBROUTINES AND FUNCTION SUBPROGRAMS REQUIRED
NONE
METHOD
DIMENSION OF Y IS SET AT DIMENSION OF X LESS ONE. DERIVATIVE
IS THEN CALCULATED BY MULTIPLYING COEFFICIENTS BY THEIR
RESPECTIVE EXPONENTS.