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authorDenys Vlasenko <vda.linux@googlemail.com>2010-10-31 03:03:38 +0100
committerDenys Vlasenko <vda.linux@googlemail.com>2010-10-31 03:03:38 +0100
commit7e308604ee0aa67bc37f37d6f69ed41481c427a0 (patch)
tree668d9324ac7c3a943cf76ef62ea97951dd2e4298 /libc
parent195931714a882765af150167115dcc9077da2213 (diff)
libm: improve readability of math.h; expand comments and docs
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
Diffstat (limited to 'libc')
-rw-r--r--libc/sysdeps/linux/alpha/bits/mathdef.h8
-rw-r--r--libc/sysdeps/linux/common/bits/mathcalls.h13
-rw-r--r--libc/sysdeps/linux/i386/bits/mathinline.h2
3 files changed, 14 insertions, 9 deletions
diff --git a/libc/sysdeps/linux/alpha/bits/mathdef.h b/libc/sysdeps/linux/alpha/bits/mathdef.h
index 2e5258230..615eb9db6 100644
--- a/libc/sysdeps/linux/alpha/bits/mathdef.h
+++ b/libc/sysdeps/linux/alpha/bits/mathdef.h
@@ -44,12 +44,12 @@ typedef double double_t;
/* Due to an ABI change, we need to remap the complex float symbols. */
# define _Mdouble_ float
# define __MATHCALL(function, args) \
- __MATHDECL (_Complex float, function, args)
+ __MATHDECL(_Complex float, function, args)
# define __MATHDECL(type, function, args) \
- __MATHDECL_1(type, function##f, args, __c1_##function##f); \
- __MATHDECL_1(type, __##function##f, args, __c1_##function##f)
+ __MATHDECL_1(type, function##f, args, __c1_##function##f); \
+ __MATHDECL_1(type, __##function##f, args, __c1_##function##f)
# define __MATHDECL_1(type, function, args, alias) \
- extern type function args __asm__(#alias) __THROW
+ extern type function args __asm__(#alias) __THROW
# include <bits/cmathcalls.h>
diff --git a/libc/sysdeps/linux/common/bits/mathcalls.h b/libc/sysdeps/linux/common/bits/mathcalls.h
index 3772b7d0d..1e92b527e 100644
--- a/libc/sysdeps/linux/common/bits/mathcalls.h
+++ b/libc/sysdeps/linux/common/bits/mathcalls.h
@@ -48,11 +48,16 @@
#endif
-/* __MATHCALLX and __MATHCALLI include libm_hidden_def
+/* __MATHCALLX(type,function,[suffix],args,attrib) and
+ * __MATHCALLI(type,function,[suffix],args) include libm_hidden_def
* (for "double" versions only, xxxf and xxxl do not get this treatment).
- * __MATHCALL does not.
- * __MATHDECL_PRIV includes libm_hidden_def (always)
- * and declares __foo, not foo.
+ *
+ * __MATHDECL(type,function,[suffix],args) does not.
+ * __MATHCALL(function,[suffix],args) also does not
+ * (it is just a shortcut to __MATHDECL(_Mdouble_,function,[suffix],args)).
+ *
+ * __MATHDECL_PRIV(type,function,[suffix],args,attrib)
+ * includes libm_hidden_def (always) and declares __foo, not foo.
*/
diff --git a/libc/sysdeps/linux/i386/bits/mathinline.h b/libc/sysdeps/linux/i386/bits/mathinline.h
index 53cbcb2b3..9e67182d5 100644
--- a/libc/sysdeps/linux/i386/bits/mathinline.h
+++ b/libc/sysdeps/linux/i386/bits/mathinline.h
@@ -206,7 +206,7 @@ __NTH (__signbitl (long double __x))
__MATH_INLINE float_type __NTH (func (float_type __x)) \
{ \
register float_type __result; \
- __asm__ __volatile__ (op : "=t" (__result) : params); \
+ __asm__ __volatile__ (op : "=t" (__result) : params); \
return __result; \
}