cleanup

git-svn-id: http://svn.code.sf.net/p/netpbm/code/trunk@4639 9d0c8265-081b-0410-96cb-a4ca84ce46f8

1 files changed, 19 insertions, 0 deletions

diff --git a/converter/other/pamtosvg/epsilon.c b/converter/other/pamtosvg/epsilon.c
new file mode 100644
index 00000000..d0c06560
--- /dev/null
+++ b/converter/other/pamtosvg/epsilon.c
@@ -0,0 +1,19 @@
+/* epsilon-equal.c: define a error resist compare. */
+
+#include <math.h>
+
+#include "epsilon.h"
+
+/* Numerical errors sometimes make a floating point number just slightly
+   larger or smaller than its true value.  When it matters, we need to
+   compare with some tolerance, REAL_EPSILON, defined in kbase.h.  */
+
+bool
+epsilon_equal(float const v1,
+              float const v2) {
+
+    return
+        v1 == v2		       /* Usually they'll be exactly equal, anyway.  */
+        || fabs(v1 - v2) <= REAL_EPSILON;
+}
+