star-cem

commit 6abf1f34d9a3c22ced471e13c5e5a6c001b6a8bc
parent 9d88f450dff9c7cf7dd6db112a1e0e0eb134256f
Author: Vincent Forest <vincent.forest@meso-star.com>
Date:   Mon, 29 Sep 2025 17:16:12 +0200

Use the local UTC time for the test

Previously, the local time was not expressed as UTC as expected by the
scem API.

Diffstat:
M
src/test_scem_sun_position.c
 | 
24
++++++++++++++++--------

1 file changed, 16 insertions(+), 8 deletions(-)
diff --git a/src/test_scem_sun_position.c b/src/test_scem_sun_position.c
@@ -15,6 +15,7 @@
 
 #include "scem.h"
 
+#include <rsys/math.h>
 #include <rsys/rsys.h>
 
 #include <time.h>
@@ -26,23 +27,30 @@ static void
 test_api(void)
 {
   time_t epoch;
-  struct tm* tm = NULL;
+  struct tm* utc = NULL;
   struct scem_gcs pos = SCEM_GCS_NULL;
   struct scem_zad sun = SCEM_ZAD_NULL;
 
   epoch = time(NULL);
   CHK(epoch != ((time_t)-1));
 
-  tm = localtime(&epoch);
-  CHK(tm != NULL);
+  utc = gmtime(&epoch);
+  CHK(utc != NULL);
 
-  pos.latitude = 43.599998;
-  pos.longitude = 1.43333;
+  printf("%s", asctime(utc));
+
+  pos.latitude = 43.604600;
+  pos.longitude = 1.44422;
+  printf("Lat: %g°; lon: %g°\n", pos.latitude, pos.longitude);
 
   CHK(scem_sun_position_from_earth(NULL, &pos, &sun) == RES_BAD_ARG);
-  CHK(scem_sun_position_from_earth(tm, NULL, &sun) == RES_BAD_ARG);
-  CHK(scem_sun_position_from_earth(tm, &pos, NULL) == RES_BAD_ARG);
-  CHK(scem_sun_position_from_earth(tm, &pos, &sun) == RES_OK);
+  CHK(scem_sun_position_from_earth(utc, NULL, &sun) == RES_BAD_ARG);
+  CHK(scem_sun_position_from_earth(utc, &pos, NULL) == RES_BAD_ARG);
+  CHK(scem_sun_position_from_earth(utc, &pos, &sun) == RES_OK);
+
+  printf("azimuth: %g°; elevation %g°\n",
+    MRAD2DEG(sun.azimuth),
+    MRAD2DEG(sun.zenith));
 }
 
 /*******************************************************************************