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Diffstat (limited to 'math/curfit/cvzerod.x')
| -rw-r--r-- | math/curfit/cvzerod.x | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/math/curfit/cvzerod.x b/math/curfit/cvzerod.x new file mode 100644 index 00000000..f9395fc1 --- /dev/null +++ b/math/curfit/cvzerod.x @@ -0,0 +1,34 @@ +# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc. + +include "dcurfitdef.h" + +# CVZERO -- Procedure to zero the accumulators before doing +# a new fit in accumulate mode. The inner products of the basis functions +# are accumulated in the CV_ORDER(cv) by CV_NCOEFF(cv) array MATRIX, while +# the inner products of the basis functions and the data ordinates are +# accumulated in the CV_NCOEFF(cv)-vector VECTOR. + +procedure dcvzero (cv) + +pointer cv # pointer to curve descriptor + +errchk mfree + +begin + # zero the accumulators + CV_NPTS(cv) = 0 + call aclrd (MATRIX(CV_MATRIX(cv)), CV_ORDER(cv)*CV_NCOEFF(cv)) + call aclrd (VECTOR(CV_VECTOR(cv)), CV_NCOEFF(cv)) + + # free the basis functions defined from previous calls to cvrefit + if (CV_BASIS(cv) != NULL) { + call mfree (CV_BASIS(cv), TY_DOUBLE) + call mfree (CV_WY(cv), TY_DOUBLE) + CV_BASIS(cv) = NULL + CV_WY(cv) = NULL + if (CV_LEFT(cv) != NULL) { + call mfree (CV_LEFT(cv), TY_INT) + CV_LEFT(cv) = NULL + } + } +end |