Merge pull request #103 from jdavidberger/verify_FLT_at_startup

Added a check at init that makes sure the user agrees with what FLT is

1 files changed, 10 insertions, 1 deletions

diff --git a/src/survive.c b/src/survive.c
index 0386275..76bf8e4 100755
--- a/src/survive.c
+++ b/src/survive.c
@@ -94,7 +94,16 @@ static void *button_servicer(void * context)
 	return NULL;
 }
 
-SurviveContext * survive_init( int headless )
+void survive_verify_FLT_size(uint32_t user_size) {
+  if(sizeof(FLT) != user_size) {
+    fprintf(stderr, "FLT type incompatible; the shared library libsurvive has FLT size %lu vs user program %u\n", sizeof(FLT), user_size);
+    fprintf(stderr, "Add '#define FLT %s' before including survive.h or recompile the shared library with the appropriate flag. \n",
+	    sizeof(FLT) == sizeof(double) ? "double" : "float");
+    exit(-1);
+  }
+}
+
+SurviveContext * survive_init_internal( int headless )
 {
 #ifdef RUNTIME_SYMNUM
 	if( !did_runtime_symnum )