naruse	2010-01-25 11:51:16 +0900 (Mon, 25 Jan 2010)

  New Revision: 26397

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=26397

  Log:
    * math.c (domain_check): ignore errno if y is inf.
      r26335 is because NetBSD 5.0's asin and acos returns
      0.0 with errno EDOM. But it breaks Linux whose gamma returns inf
      with errno ERANGE on.

  Modified files:
    trunk/ChangeLog
    trunk/math.c

Index: math.c
===================================================================
--- math.c	(revision 26396)
+++ math.c	(revision 26397)
@@ -27,7 +27,10 @@
 static void
 domain_check(double x, double y, const char *msg)
 {
-    if (!errno) {
+    if (errno) {
+	if (isinf(y)) return;
+    }
+    else {
 	if (!isnan(y)) return;
 	else if (isnan(x)) return;
 	else {
Index: ChangeLog
===================================================================
--- ChangeLog	(revision 26396)
+++ ChangeLog	(revision 26397)
@@ -1,3 +1,10 @@
+Mon Jan 25 11:45:47 2010  NARUSE, Yui  <naruse@r...>
+
+	* math.c (domain_check): ignore errno if y is inf.
+	  r26335 is because NetBSD 5.0's asin and acos returns
+	  0.0 with errno EDOM. But it breaks Linux whose gamma returns inf
+	  with errno ERANGE on.
+
 Sun Jan 24 22:48:05 2010  Koichi Sasada  <ko1@a...>
 
 	* eval.c, vm.c, vm_eval.c, vm_insnhelper.c: fix issues about
@@ -228,6 +235,7 @@
 Sun Jan 17 19:24:25 2010  Nobuyoshi Nakada  <nobu@r...>
 
 	* math.c (domain_check): check errno first.
+	  NetBSD 5.0's asin and acos returns 0.0 with errno EDOM.
 
 Sun Jan 17 14:24:35 2010  Nobuyoshi Nakada  <nobu@r...>
 

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