From c9bbe9be613e0a035a4d030778d85f4effc4cfaa Mon Sep 17 00:00:00 2001
From: Arun Isaac
Date: Tue, 23 Feb 2021 16:37:31 +0530
Subject: Wrap integrands.

* scm/extent-sampling/wrap.scm (make-integrand,
make-polynomial-integrand, gaussian-integrand,
x-coordinate-integrand): New functions.
---
 scm/extent-sampling/wrap.scm | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/scm/extent-sampling/wrap.scm b/scm/extent-sampling/wrap.scm
index e22e299..25b9970 100644
--- a/scm/extent-sampling/wrap.scm
+++ b/scm/extent-sampling/wrap.scm
@@ -290,3 +290,24 @@
   ((true-volume-procedure "spheroid_true_volume")
    dimension (make-spheroid-params eccentricity)))
 
+;; integrands
+
+(define (make-integrand integrand params)
+  (make-c-struct (list '* '*)
+                 (list integrand params)))
+
+(define-public (make-polynomial-integrand polynomial)
+  (make-integrand (dynamic-func "polynomial_integrand" lib-extentsampling)
+                  (make-c-struct (list '* int)
+                                 (list (bytevector->pointer
+                                        (list->typed-array 'f64 1 polynomial))
+                                       (1- (length polynomial))))))
+
+(define-public gaussian-integrand
+  (make-integrand (dynamic-func "gaussian_integrand" lib-extentsampling)
+                  %null-pointer))
+
+(define-public x-coordinate-integrand
+  (make-integrand (dynamic-func "x_coordinate_integrand" lib-extentsampling)
+                  %null-pointer))
+
-- 
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