libmicrohttpd2

commit db32818ba9ebe683fba199aba6cd0a7c7ca30fef
parent 46db111e949c4b36737f81fb217e5e72f4f198ba
Author: Evgeny Grin (Karlson2k) <k2k@drgrin.dev>
Date:   Tue, 30 Jun 2026 01:34:09 +0200

mhd_predict: minor code and description improvements

Diffstat:
M
src/mhd2/mhd_predict.h
 | 
26
++++++++++++++++----------

1 file changed, 16 insertions(+), 10 deletions(-)
diff --git a/src/mhd2/mhd_predict.h b/src/mhd2/mhd_predict.h
@@ -101,14 +101,16 @@
  *
  * Hint that @p cond is expected to be true with probability @p prob.
  *
- * @param cond  Boolean-like expression; evaluated exactly once.
- * @param prob  Anticipated probability in the range [0.0, 1.0].
- *              Only compile-time constants; avoid 0.0 or 1.0.
- *
  * Expands to compiler-specific intrinsics when available; otherwise to
  * a boolean normalisation of @p cond.
  *
+ * @param cond  Boolean-like expression; evaluated exactly once.
+ * @param prob  Anticipated probability in the range (0.5, 1.0].
+ *              Only compile-time constants; avoid 1.0.
+ *
  * @see mhd_COND_PRED_FALSE_P
+ * @warning Technically, @a prob is accepted in the range [0.0, 1.0], but for
+ *          values lower than 0.5 #mhd_COND_PRED_FALSE_P() must be used instead
  */
 
 /**
@@ -116,14 +118,16 @@
  *
  * Hint that @p cond is expected to be false with probability @p prob.
  *
- * @param cond  Boolean-like expression; evaluated exactly once.
- * @param prob  Anticipated probability in the range [0.0, 1.0].
- *              Only compile-time constants; avoid 0.0 or 1.0.
- *
  * Expands to compiler-specific intrinsics when available; otherwise to
  * a boolean normalisation of @p cond.
  *
+ * @param cond  Boolean-like expression; evaluated exactly once.
+ * @param prob  Anticipated probability in the range (0.5, 1.0].
+ *              Only compile-time constants; avoid 1.0.
+ *
  * @see mhd_COND_PRED_TRUE_P
+ * @warning Technically, @a prob is accepted in the range [0.0, 1.0], but for
+ *          values lower than 0.5 #mhd_COND_PRED_TRUE_P() must be used instead
  */
 
 
@@ -133,8 +137,10 @@
 #  define mhd_COND_PRED_FALSE_P(cond,prob) \
         __builtin_expect_with_probability (! ! (cond), 0, (prob))
 #elif defined(MHD_HAVE___BUILTIN_EXPECT)
-#  define mhd_COND_PRED_TRUE_P(cond,prob)    __builtin_expect (! ! (cond), ! 0)
-#  define mhd_COND_PRED_FALSE_P(cond,prob)   __builtin_expect (! ! (cond), 0)
+#  define mhd_COND_PRED_TRUE_P(cond,prob) \
+        (((prob) < 0.85) ? (! ! (cond)) : (__builtin_expect (! ! (cond), ! 0)))
+#  define mhd_COND_PRED_FALSE_P(cond,prob) \
+        (((prob) < 0.85) ? (! ! (cond)) : (__builtin_expect (! ! (cond), 0)))
 #else
 #  define mhd_COND_PRED_TRUE_P(cond,prob)    (! ! (cond))
 #  define mhd_COND_PRED_FALSE_P(cond,prob)   (! ! (cond))