2007-05-17 Cary R. <cygcary <at> yahoo.com>

        * libm/math/w_atan2.c: Fix atan2 to be consistent with glibc
        (atan2(+0,-0), atan2(-0,-0) and atan(-0,+0))
        * libm/math/wf_atan2.c: Ditto.

3 files changed, 6 insertions, 52 deletions

diff --git a/newlib/ChangeLog b/newlib/ChangeLog
index 47d5eda38..d2ed17ffe 100644
--- a/newlib/ChangeLog
+++ b/newlib/ChangeLog
@@ -1,3 +1,9 @@
+2007-05-17  Cary R.  <cygcary <at> yahoo.com>
+
+	* libm/math/w_atan2.c: Fix atan2 to be consistent with glibc
+	(atan2(+0,-0), atan2(-0,-0) and atan(-0,+0))
+	* libm/math/wf_atan2.c: Ditto.
+
 2007-05-17  Yaakov Selkowitz  <yselkowitz <at> users.sourceforge.net> 
 
 	* libm/common/Makefile.am: Add support for exp10, exp10f,
diff --git a/newlib/libm/math/w_atan2.c b/newlib/libm/math/w_atan2.c
index 25eb1617e..f3e344ea6 100644
--- a/newlib/libm/math/w_atan2.c
+++ b/newlib/libm/math/w_atan2.c
@@ -60,8 +60,6 @@ RETURNS
 $-\pi$ to $\pi$.
 @end tex
 
-If both <[x]> and <[y]> are 0.0, <<atan2>> causes a <<DOMAIN>> error.
-
 You can modify error handling for these functions using <<matherr>>.
 
 PORTABILITY
@@ -86,32 +84,7 @@ PORTABILITY
 	double y,x;
 #endif
 {
-#ifdef _IEEE_LIBM
 	return __ieee754_atan2(y,x);
-#else
-	double z;
-	struct exception exc;
-	z = __ieee754_atan2(y,x);
-	if(_LIB_VERSION == _IEEE_||isnan(x)||isnan(y)) return z;
-	if(x==0.0&&y==0.0) {
-	    /* atan2(+-0,+-0) */
-	    exc.arg1 = y;
-	    exc.arg2 = x;
-	    exc.type = DOMAIN;
-	    exc.name = "atan2";
-	    exc.err = 0;
-	    exc.retval = 0.0;
-	    if(_LIB_VERSION == _POSIX_)
-	       errno = EDOM;
-	    else if (!matherr(&exc)) {
-	       errno = EDOM;
-	    }
-	    if (exc.err != 0)
-	       errno = exc.err;
-	    return exc.retval; 
-	} else
-	    return z;
-#endif
 }
 
 #endif /* defined(_DOUBLE_IS_32BITS) */
diff --git a/newlib/libm/math/wf_atan2.c b/newlib/libm/math/wf_atan2.c
index 069a7ca13..eb2a76b1f 100644
--- a/newlib/libm/math/wf_atan2.c
+++ b/newlib/libm/math/wf_atan2.c
@@ -28,32 +28,7 @@
 	float y,x;
 #endif
 {
-#ifdef _IEEE_LIBM
 	return __ieee754_atan2f(y,x);
-#else
-	float z;
-	struct exception exc;
-	z = __ieee754_atan2f(y,x);
-	if(_LIB_VERSION == _IEEE_||isnanf(x)||isnanf(y)) return z;
-	if(x==(float)0.0&&y==(float)0.0) {
-	    /* atan2f(+-0,+-0) */
-	    exc.arg1 = y;
-	    exc.arg2 = x;
-	    exc.err = 0;
-	    exc.type = DOMAIN;
-	    exc.name = "atan2f";
-	    exc.retval = 0.0;
-	    if(_LIB_VERSION == _POSIX_)
-	       errno = EDOM;
-	    else if (!matherr(&exc)) {
-	       errno = EDOM;
-	    }
-	    if (exc.err != 0)
-	       errno = exc.err;
-	    return (float)exc.retval;
-	} else
-	    return z;
-#endif
 }
 
 #ifdef _DOUBLE_IS_32BITS