From: Zheng Chen <chanchengcc@gmail.com>
Subject: msvcrt: Add errno EDOM setting for atan(NAN)/exp(NAN)/tanh(NAN)
Message-Id: <CA+ibcXGHfJOniJnCHoUhoRmcYJg=S65FzEiK2_Fjg-V5th8LTw@mail.gmail.com>
Date: Tue, 24 Mar 2015 16:01:44 +0800

Thanks to Piotr.

---
 dlls/msvcrt/math.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/dlls/msvcrt/math.c b/dlls/msvcrt/math.c
index 12a0be9..efa9733 100644
--- a/dlls/msvcrt/math.c
+++ b/dlls/msvcrt/math.c
@@ -363,6 +363,7 @@ double CDECL MSVCRT_asin( double x )
  */
 double CDECL MSVCRT_atan( double x )
 {
+  if (isnan(x)) *MSVCRT__errno() = MSVCRT_EDOM;
   return atan(x);
 }

@@ -398,6 +399,7 @@ double CDECL MSVCRT_cosh( double x )
  */
 double CDECL MSVCRT_exp( double x )
 {
+  if (isnan(x)) *MSVCRT__errno() = MSVCRT_EDOM;
   return exp(x);
 }

@@ -482,6 +484,7 @@ double CDECL MSVCRT_tan( double x )
  */
 double CDECL MSVCRT_tanh( double x )
 {
+  if (isnan(x)) *MSVCRT__errno() = MSVCRT_EDOM;
   return tanh(x);
 }


-- 
2.3.3

<div dir="ltr">Thanks to Piotr.<div><br></div><div><div>---</div><div> dlls/msvcrt/math.c | 3 +++</div><div> 1 file changed, 3 insertions(+)</div><div><br></div><div>diff --git a/dlls/msvcrt/math.c b/dlls/msvcrt/math.c</div><div>index 12a0be9..efa9733 100644</div><div>--- a/dlls/msvcrt/math.c</div><div>+++ b/dlls/msvcrt/math.c</div><div>@@ -363,6 +363,7 @@ double CDECL MSVCRT_asin( double x )</div><div>  */</div><div> double CDECL MSVCRT_atan( double x )</div><div> {</div><div>+  if (isnan(x)) *MSVCRT__errno() = MSVCRT_EDOM;</div><div>   return atan(x);</div><div> }</div><div> </div><div>@@ -398,6 +399,7 @@ double CDECL MSVCRT_cosh( double x )</div><div>  */</div><div> double CDECL MSVCRT_exp( double x )</div><div> {</div><div>+  if (isnan(x)) *MSVCRT__errno() = MSVCRT_EDOM;</div><div>   return exp(x);</div><div> }</div><div> </div><div>@@ -482,6 +484,7 @@ double CDECL MSVCRT_tan( double x )</div><div>  */</div><div> double CDECL MSVCRT_tanh( double x )</div><div> {</div><div>+  if (isnan(x)) *MSVCRT__errno() = MSVCRT_EDOM;</div><div>   return tanh(x);</div><div> }</div><div> </div><div>-- </div><div>2.3.3</div><div><br></div></div></div>