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Fix ldbl-128ibm "set but not used" warnings
- From: "Joseph S. Myers" <joseph at codesourcery dot com>
- To: <libc-alpha at sourceware dot org>
- Date: Tue, 4 Dec 2012 21:15:08 +0000
- Subject: Fix ldbl-128ibm "set but not used" warnings
Several ldbl-128ibm functions have "set but not used" compiler
warnings because of the use of a macro to extract parts of a
floating-point number, where then only some of the parts get used in
the function. This patch fixes the warnings (tested powerpc32) by
marking those variables with __attribute__ ((unused)).
2012-12-04 Joseph Myers <joseph@codesourcery.com>
* sysdeps/ieee754/ldbl-128ibm/e_atanhl.c (__ieee754_atanhl): Mark
variable LX with __attribute__ ((unused)).
* sysdeps/ieee754/ldbl-128ibm/e_rem_pio2l.c (__ieee754_rem_pio2l):
Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_isnanl.c (___isnanl): Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_logbl.c (__logbl): Likewise.
* sysdeps/ieee754/ldbl-128ibm/s_nextafterl.c: Mark variable LY
with __attribute__ ((unused)).
diff --git a/sysdeps/ieee754/ldbl-128ibm/e_atanhl.c b/sysdeps/ieee754/ldbl-128ibm/e_atanhl.c
index 075855b..f35182f 100644
--- a/sysdeps/ieee754/ldbl-128ibm/e_atanhl.c
+++ b/sysdeps/ieee754/ldbl-128ibm/e_atanhl.c
@@ -40,7 +40,7 @@ __ieee754_atanhl(long double x)
{
long double t;
int64_t hx,ix;
- u_int64_t lx;
+ u_int64_t lx __attribute__ ((unused));
GET_LDOUBLE_WORDS64(hx,lx,x);
ix = hx&0x7fffffffffffffffLL;
if (ix >= 0x3ff0000000000000LL) { /* |x|>=1 */
diff --git a/sysdeps/ieee754/ldbl-128ibm/e_rem_pio2l.c b/sysdeps/ieee754/ldbl-128ibm/e_rem_pio2l.c
index 5352de9..a3d141d 100644
--- a/sysdeps/ieee754/ldbl-128ibm/e_rem_pio2l.c
+++ b/sysdeps/ieee754/ldbl-128ibm/e_rem_pio2l.c
@@ -200,7 +200,8 @@ int32_t __ieee754_rem_pio2l(long double x, long double *y)
double tx[8];
int exp;
int64_t n, ix, hx, ixd;
- u_int64_t lx, lxd;
+ u_int64_t lx __attribute__ ((unused));
+ u_int64_t lxd;
GET_LDOUBLE_WORDS64 (hx, lx, x);
ix = hx & 0x7fffffffffffffffLL;
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_isnanl.c b/sysdeps/ieee754/ldbl-128ibm/s_isnanl.c
index 157666c..264dec7 100644
--- a/sysdeps/ieee754/ldbl-128ibm/s_isnanl.c
+++ b/sysdeps/ieee754/ldbl-128ibm/s_isnanl.c
@@ -29,7 +29,8 @@ static char rcsid[] = "$NetBSD: $";
int
___isnanl (long double x)
{
- int64_t hx,lx;
+ int64_t hx;
+ int64_t lx __attribute__ ((unused));
GET_LDOUBLE_WORDS64(hx,lx,x);
hx &= 0x7fffffffffffffffLL;
hx = 0x7ff0000000000000LL - hx;
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_logbl.c b/sysdeps/ieee754/ldbl-128ibm/s_logbl.c
index 92ce2c1..6cbfcfa 100644
--- a/sysdeps/ieee754/ldbl-128ibm/s_logbl.c
+++ b/sysdeps/ieee754/ldbl-128ibm/s_logbl.c
@@ -26,7 +26,8 @@
long double
__logbl (long double x)
{
- int64_t lx, hx, rhx;
+ int64_t hx, rhx;
+ int64_t lx __attribute__ ((unused));
GET_LDOUBLE_WORDS64 (hx, lx, x);
hx &= 0x7fffffffffffffffLL; /* high |x| */
diff --git a/sysdeps/ieee754/ldbl-128ibm/s_nextafterl.c b/sysdeps/ieee754/ldbl-128ibm/s_nextafterl.c
index 994e287..ff5d7d3 100644
--- a/sysdeps/ieee754/ldbl-128ibm/s_nextafterl.c
+++ b/sysdeps/ieee754/ldbl-128ibm/s_nextafterl.c
@@ -31,7 +31,8 @@ static char rcsid[] = "$NetBSD: $";
long double __nextafterl(long double x, long double y)
{
int64_t hx,hy,ihx,ihy,ilx;
- u_int64_t lx,ly;
+ u_int64_t lx;
+ u_int64_t ly __attribute__ ((unused));
GET_LDOUBLE_WORDS64(hx,lx,x);
GET_LDOUBLE_WORDS64(hy,ly,y);
--
Joseph S. Myers
joseph@codesourcery.com