Changeset 23594 for branches/cnb_branches/cnb_branch_20090301/psLib/src/math/psSpline.c

Timestamp:

Mar 29, 2009, 6:15:31 PM (17 years ago)

Author:

beaumont

Message:

merged with head

Location:

branches/cnb_branches/cnb_branch_20090301

Files:

• . (modified) (1 prop)
• psLib/src/math/psSpline.c (modified) (5 diffs)

branches/cnb_branches/cnb_branch_20090301/psLib/src/math/psSpline.c

@@ -103 +103 @@
 tabulated function at n points, this routine calculates the second
 derivatives of the interpolating cubic splines at those n points.
- 
+
 The first and second derivatives at the endpoints were previously undefined in
 the SDR.  From bugzilla #???, they are required to be 0.0, implementing natural
 splines.
- 
+
 Endpoints are defined by
     PS_LEFT_SPLINE_DERIV
     PS_RIGHT_SPLINE_DERIV
- 
+
 This routine assumes that vectors x and y are of the appropriate types/sizes
 (F32).
- 
+
 XXX: use recycled vectors for internal data.
 XXX: do an F64 version?
@@ -177 +177 @@
 }
 
-psSpline1D *psSpline1DAlloc()
+psSpline1D *psSpline1DAlloc(void)
 {
     psSpline1D *tmpSpline = (psSpline1D *) psAlloc(sizeof(psSpline1D));
@@ -192 +192 @@
 psVectorFitSpline1D(): given a set of x/y vectors, this routine generates the
 linear or cublic splines which satisfy those data points.
- 
+
 The formula for calculating the spline polynomials is derived from Numerical
 Recipes in C.  The basic idea is that the polynomial is
@@ -206 +206 @@
 into a polynomial in terms of x, and then saving the coefficients of the
 powers of x in the spline polynomials.  This gets pretty complicated.
- 
+
 XXX: What types must be supported?
  *****************************************************************************/
@@ -354 +354 @@
 (vectorBinDisectF32()).  Then it evaluates the spline at that x location
 by a call to the 1D polynomial functions.
- 
+
 XXX: The spline eval functions require input and output to be F32.  however
      the spline fit functions require F32 and F64.
- 
+
 XXX: This only works if spline->knots if psF32.  Must we add support for psU32 and
 psF64?