Remove some math_private.h libc_fe* overrides [committed]

Remove some math_private.h libc_fe* overrides [committed]

[Joseph Myers]

math_private.h headers for configurations lacking support for
floating-point exceptions and rounding modes define various libc_fe*
macros to override the default versions with ones that discard any
exception or rounding mode arguments.

Three of the four macros defined in these headers are no longer needed
there: those macros are only used in fma implementations that are not
used for such configurations, now all those configurations properly
use soft-fp fma implementations instead.  (Effectively, those macros
were a workaround to allow glibc to build in the absence of a proper
fma implementation for this case - now there is such an
implementation, there is no need to support building the wrong
implementation for those configurations.)  Thus, this patch removes
the unnecessary macros.

Tested with build-many-glibcs.py that installed stripped shared
libraries are unchanged by the patch.  Committed.

2018-02-01  Joseph Myers  <joseph@codesourcery.com>

	* sysdeps/m68k/coldfire/nofpu/math_private.h (libc_fesetround):
	Remove macro.
	(libc_fetestexcept): Likewise.
	(libc_feupdateenv_test): Likewise.
	* sysdeps/microblaze/math_private.h (libc_fesetround): Likewise.
	(libc_fetestexcept): Likewise.
	(libc_feupdateenv_test): Likewise.
	* sysdeps/nios2/math_private.h (libc_fesetround): Likewise.
	(libc_fetestexcept): Likewise.
	(libc_feupdateenv_test): Likewise.
	* sysdeps/tile/math_private.h (libc_fesetround): Likewise.
	(libc_fetestexcept): Likewise.
	(libc_feupdateenv_test): Likewise.

diff --git a/sysdeps/m68k/coldfire/nofpu/math_private.h b/sysdeps/m68k/coldfire/nofpu/math_private.h
index 951f026..0694de9 100644
--- a/sysdeps/m68k/coldfire/nofpu/math_private.h
+++ b/sysdeps/m68k/coldfire/nofpu/math_private.h
@@ -32,10 +32,7 @@
    The overrides for libc_ functions must happen before we include
    the generic math_private.h.  */
 
-#define libc_fesetround(rnd)                   ({ 0; })
-#define libc_fetestexcept(exc)                 ({ 0; })
 #define libc_feholdexcept_setround(env, exc)   ({ (void) (env); 0; })
-#define libc_feupdateenv_test(env, exc)        ({ (void) (env); 0; })
 
 /* Enable __finitel, __isinfl, and __isnanl for binary compatibility
    when built without long double support. */
diff --git a/sysdeps/microblaze/math_private.h b/sysdeps/microblaze/math_private.h
index 1a2c521..1d70d05 100644
--- a/sysdeps/microblaze/math_private.h
+++ b/sysdeps/microblaze/math_private.h
@@ -19,10 +19,7 @@
    The overrides for libc_ functions must happen before we include
    the generic math_private.h.  */
 
-#define libc_fesetround(rnd)                   ({ 0; })
-#define libc_fetestexcept(exc)                 ({ 0; })
 #define libc_feholdexcept_setround(env, exc)   ({ (void) (env); 0; })
-#define libc_feupdateenv_test(env, exc)        ({ (void) (env); 0; })
 
 /* Enable __finitel, __isinfl, and __isnanl for binary compatibility
    when built without long double support. */
diff --git a/sysdeps/nios2/math_private.h b/sysdeps/nios2/math_private.h
index 2514041..9c734fa 100644
--- a/sysdeps/nios2/math_private.h
+++ b/sysdeps/nios2/math_private.h
@@ -18,10 +18,7 @@
    The overrides for libc_ functions must happen before we include
    the generic math_private.h.  */
 
-#define libc_fesetround(rnd)                   ({ 0; })
-#define libc_fetestexcept(exc)                 ({ 0; })
 #define libc_feholdexcept_setround(env, exc)   ({ (void) (env); 0; })
-#define libc_feupdateenv_test(env, exc)        ({ (void) (env); 0; })
 
 /* Enable __finitel, __isinfl, and __isnanl for binary compatibility
    when built without long double support. */
diff --git a/sysdeps/tile/math_private.h b/sysdeps/tile/math_private.h
index 32b549f..09c7204 100644
--- a/sysdeps/tile/math_private.h
+++ b/sysdeps/tile/math_private.h
@@ -17,10 +17,7 @@
    The overrides for libc_ functions must happen before we include
    the generic math_private.h.  */
 
-#define libc_fesetround(rnd)			({ 0; })
-#define libc_fetestexcept(exc)			({ 0; })
 #define libc_feholdexcept_setround(env, exc)	({ (void) (env); 0; })
-#define libc_feupdateenv_test(env, exc)		({ (void) (env); 0; })
 
 #include_next <math_private.h>
 

-- 
Joseph S. Myers
joseph@codesourcery.com