r3969 - trunk/bse
- From: timj svn gnome org
- To: svn-commits-list gnome org
- Subject: r3969 - trunk/bse
- Date: Sun, 15 Oct 2006 16:50:48 -0400 (EDT)
Author: timj
Date: 2006-10-15 16:50:41 -0400 (Sun, 15 Oct 2006)
New Revision: 3969
Modified:
trunk/bse/ChangeLog
trunk/bse/bseieee754.h
Log:
Sun Oct 15 22:49:51 2006 Tim Janik <timj gtk org>
* bseieee754.h: added BSE_DOUBLE_EPSILON and BSE_FLOAT_EPSILON,
constants for the round-off error at 1.0.
Modified: trunk/bse/ChangeLog
===================================================================
--- trunk/bse/ChangeLog 2006-10-15 19:34:06 UTC (rev 3968)
+++ trunk/bse/ChangeLog 2006-10-15 20:50:41 UTC (rev 3969)
@@ -1,3 +1,8 @@
+Sun Oct 15 22:49:51 2006 Tim Janik <timj gtk org>
+
+ * bseieee754.h: added BSE_DOUBLE_EPSILON and BSE_FLOAT_EPSILON,
+ constants for the round-off error at 1.0.
+
Sun Oct 15 20:58:57 2006 Stefan Westerfeld <stefan space twc de>
* gslfilter.c: Made implementation of gsl_filter_sine_scan() more
Modified: trunk/bse/bseieee754.h
===================================================================
--- trunk/bse/bseieee754.h 2006-10-15 19:34:06 UTC (rev 3968)
+++ trunk/bse/bseieee754.h 2006-10-15 20:50:41 UTC (rev 3969)
@@ -46,15 +46,17 @@
/* floating point type related constants */
#define BSE_FLOAT_BIAS (127)
-#define BSE_FLOAT_MAX_NORMAL (3.40282347e+38) /* 7f7fffff */
+#define BSE_FLOAT_MAX_NORMAL (3.40282347e+38) /* 7f7fffff, 2^128 * (1 - BSE_FLOAT_EPSILON) */
#define BSE_FLOAT_MIN_NORMAL (1.17549435e-38) /* 00800000 */
#define BSE_FLOAT_MAX_SUBNORMAL (1.17549421e-38) /* 007fffff */
#define BSE_FLOAT_MIN_SUBNORMAL (1.40129846e-45) /* 00000001 */
+#define BSE_FLOAT_EPSILON (5.9604644775390625e-08) /* 2^-24, round-off error at 1.0 */
#define BSE_DOUBLE_BIAS (1023)
-#define BSE_DOUBLE_MAX_NORMAL (1.7976931348623157e+308) /* 7fefffff ffffffff */
+#define BSE_DOUBLE_MAX_NORMAL (1.7976931348623157e+308) /* 7fefffff ffffffff, 2^1024 * (1 - BSE_DOUBLE_EPSILON) */
#define BSE_DOUBLE_MIN_NORMAL (2.2250738585072014e-308) /* 00100000 00000000 */
#define BSE_DOUBLE_MAX_SUBNORMAL (2.2250738585072009e-308) /* 000fffff ffffffff */
#define BSE_DOUBLE_MIN_SUBNORMAL (4.9406564584124654e-324) /* 00000000 00000001 */
+#define BSE_DOUBLE_EPSILON (1.1102230246251565404236316680908203125e-16) /* 2^-53, round-off error at 1.0 */
#define BSE_DOUBLE_INF (_bse_dinf_union.d)
#define BSE_DOUBLE_NAN (_bse_dnan_union.d)
#define BSE_FLOAT_INF (_bse_finf_union.f)
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