--- ray/src/rt/pmapbias.h	2015/09/01 16:27:52	2.4
+++ ray/src/rt/pmapbias.h	2024/09/17 16:36:05	2.6
@@ -1,4 +1,5 @@
-/* RCSid $Id: pmapbias.h,v 2.4 2015/09/01 16:27:52 greg Exp $ */
+/* RCSid $Id: pmapbias.h,v 2.6 2024/09/17 16:36:05 greg Exp $ */
+
 /* 
    ==================================================================
    Bias compensation for photon density estimates
@@ -11,6 +12,7 @@
    (c) Fraunhofer Institute for Solar Energy Systems
    ==================================================================
       
+   $Id: pmapbias.h,v 2.6 2024/09/17 16:36:05 greg Exp $
 */
 
 
@@ -19,6 +21,10 @@
 
    #include "pmapdata.h"
 
+#ifdef __cplusplus
+extern "C" {
+#endif
+
    /* Bias compensation weighting function */
    /* #define BIASCOMP_WGT(n) 1 */
    /* #define BIASCOMP_WGT(n) (n) */
@@ -29,7 +35,6 @@
    /* Dump photon bandwidth for bias compensated density estimates */
    /* #define BIASCOMP_BWIDTH */
 
-
    void biasComp (PhotonMap*, COLOR);
    /* Photon density estimate with bias compensation, returning irradiance. 
       Expects photons in search queue after a kd-tree lookup. */
@@ -37,5 +42,9 @@
    void volumeBiasComp (PhotonMap*, const RAY*, COLOR);   
    /* Photon volume density estimate with bias compensation, returning
       irradiance. Expects photons in search queue after a kd-tree lookup. */
+
+#ifdef __cplusplus
+}
+#endif
 
 #endif