From: Bborie Park <bkpark at ucdavis.edu>
Date: Mon, 22 Oct 2012 17:19:41 +0000 (+0000)
Subject: Tweaked rt_band_check_is_nodata() to make use of rt_band_get_pixel()'s
X-Git-Tag: 2.1.0beta2~490
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=fc2e203a2af2e2f8d3aaf00ed98262982a444411;p=postgis

Tweaked rt_band_check_is_nodata() to make use of rt_band_get_pixel()'s
ability to return flag indicating if value is NODATA

git-svn-id: http://svn.osgeo.org/postgis/trunk@10515 b70326c6-7e19-0410-871a-916f4a2858ee
---

diff --git a/raster/rt_core/rt_api.c b/raster/rt_core/rt_api.c
index 1930bd80a..6394ab8e5 100644
--- a/raster/rt_core/rt_api.c
+++ b/raster/rt_core/rt_api.c
@@ -2801,6 +2801,7 @@ int
 rt_band_check_is_nodata(rt_band band) {
 	int i, j, err;
 	double pxValue;
+	int isnodata = 0;
 
 	assert(NULL != band);
 
@@ -2816,12 +2817,12 @@ rt_band_check_is_nodata(rt_band band) {
 	/* Check all pixels */
 	for (i = 0; i < band->width; i++) {
 		for (j = 0; j < band->height; j++) {
-			err = rt_band_get_pixel(band, i, j, &pxValue, NULL);
+			err = rt_band_get_pixel(band, i, j, &pxValue, &isnodata);
 			if (err != 0) {
 				rterror("rt_band_check_is_nodata: Cannot get band pixel");
 				return FALSE;
 			}
-			else if (FLT_NEQ(pxValue, band->nodataval)) {
+			else if (!isnodata) {
 				band->isnodata = FALSE;
 				return FALSE;
 			}