cova3 / ksol (ordinary-kriging driver)
Module: external GSLIB routines
E2: source-supported; L13: verified
Derivatives / callbacks: not applicable
The driver assembles an ordinary-kriging system from GSLIB covariance and linear-solver routines. It checks exponential covariances, closed-form weights, endpoint interpolation and independent system residuals. Broad interpolation/covariance classes only; no exhaustive spatial-statistics review. The L13 driver verifies spherical/exponential/Gaussian covariances, 21 two-observation ordinary kriging systems, closed-form weights and variances, constant-field reproduction and reflection symmetry. It separates real32 covariance error from real64 solver residuals, and does not verify the separate E2 mapping. GSLIB source-evidence hashes use UTF-8/LF normalization.
Pinned source: src/legacy/gslib/cova3.f90 · src/legacy/gslib/ksol.f90