add interp1d function to do fast interpolation when the x values are evenly spaced

1 files changed, 1 insertions, 0 deletions

diff --git a/src/misc.h b/src/misc.h
index 295e59c..c1897d9 100644
--- a/src/misc.h
+++ b/src/misc.h
@@ -3,6 +3,7 @@
 
 #include <stdlib.h> /* for size_t */
 
+double interp1d(double x, double *xp, double *yp, size_t n);
 int isclose(double a, double b, double rel_tol, double abs_tol);
 int allclose(double *a, double *b, size_t n, double rel_tol, double abs_tol);
 double logsumexp(double *a, size_t n);