Use copysign functions not __copysign functions in glibc libm.

Continuing the move to use, within libm, public names for libm
functions that can be inlined as built-in functions on many
architectures, this patch moves calls to __copysign functions to call
the corresponding copysign names instead, with asm redirection to
__copysign when the calls are not inlined (all cases are inlined
except for IBM long double for powerpc soft-float / e500v1).  This
eliminates the need for an inline function defining __copysign in
terms of __builtin_copysign.

Tested for x86_64, and with build-many-glibcs.py.

	* include/math.h [!_ISOMAC && !(__FINITE_MATH_ONLY__ &&
	__FINITE_MATH_ONLY__ > 0) && !NO_MATH_REDIRECT]
	(MATH_REDIRECT_BINARY_ARGS): New macro.
	[!_ISOMAC && !(__FINITE_MATH_ONLY__ && __FINITE_MATH_ONLY__ > 0)
	&& !NO_MATH_REDIRECT] (copysign): Redirect using MATH_REDIRECT.
	* sysdeps/alpha/fpu/s_copysign.c: Define NO_MATH_REDIRECT before
	header inclusion.
	* sysdeps/alpha/fpu/s_copysignf.c: Likewise.
	* sysdeps/ieee754/dbl-64/s_copysign.c: Likewise.
	* sysdeps/ieee754/float128/s_copysignf128.c: Likewise.
	* sysdeps/ieee754/flt-32/s_copysignf.c: Likewise.
	* sysdeps/ieee754/ldbl-128/s_copysignl.c: Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_copysignl.c: Likewise.
	* sysdeps/ieee754/ldbl-96/s_copysignl.c: Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_copysign.c:
	Likewise.
	* sysdeps/powerpc/powerpc32/power4/fpu/multiarch/s_copysignf.c:
	Likewise.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysign.c: Likewise.
	* sysdeps/powerpc/powerpc64/fpu/multiarch/s_copysignf.c: Likewise.
	* sysdeps/riscv/rvd/s_copysign.c: Likewise.
	* sysdeps/riscv/rvf/s_copysignf.c: Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_copysign.c:
	Likewise.
	* sysdeps/sparc/sparc32/sparcv9/fpu/multiarch/s_copysignf.c:
	Likewise.
	* sysdeps/generic/math_private_calls.h
	[!__MATH_DECLARING_LONG_DOUBLE || !NO_LONG_DOUBLE] (__copysign):
	Do not declare and define as an inline function.
	* math/divtc3.c (__divtc3): Use copysign functions instead of
	__copysign variants.
	* math/multc3.c (__multc3): Likewise.
	* sysdeps/generic/math-type-macros.h (M_COPYSIGN): Likewise.
	* sysdeps/ieee754/dbl-64/e_atan2.c (signArctan2): Likewise.
	* sysdeps/ieee754/dbl-64/e_atanh.c (__ieee754_atanh): Likewise.
	* sysdeps/ieee754/dbl-64/e_gamma_r.c (__ieee754_gamma_r):
	Likewise.
	* sysdeps/ieee754/dbl-64/e_jn.c (__ieee754_jn): Likewise.
	(__ieee754_yn): Likewise.
	* sysdeps/ieee754/dbl-64/s_asinh.c (__asinh): Likewise.
	* sysdeps/ieee754/dbl-64/s_atan.c (__signArctan): Likewise.
	* sysdeps/ieee754/dbl-64/s_scalbln.c (__scalbln): Likewise.
	* sysdeps/ieee754/dbl-64/s_scalbn.c (__scalbn): Likewise.
	* sysdeps/ieee754/dbl-64/s_sin.c (do_sin): Likewise.
	(__sin): Likewise.
	* sysdeps/ieee754/dbl-64/s_sincos.c (__sincos): Likewise.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_nearbyint.c (__nearbyint):
	Likewise.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_scalbln.c (__scalbln):
	Likewise.
	* sysdeps/ieee754/dbl-64/wordsize-64/s_scalbn.c (__scalbn):
	Likewise.
	* sysdeps/ieee754/flt-32/e_atanhf.c (__ieee754_atanhf): Likewise.
	* sysdeps/ieee754/flt-32/e_gammaf_r.c (__ieee754_gammaf_r):
	Likewise.
	* sysdeps/ieee754/flt-32/e_jnf.c (__ieee754_jnf): Likewise.
	(__ieee754_ynf): Likewise.
	* sysdeps/ieee754/flt-32/s_asinhf.c (__asinhf): Likewise.
	* sysdeps/ieee754/flt-32/s_scalbnf.c (__scalbnf): Likewise.
	* sysdeps/ieee754/k_standard.c (__kernel_standard): Likewise.
	* sysdeps/ieee754/ldbl-128/e_gammal_r.c (__ieee754_gammal_r):
	Likewise.
	* sysdeps/ieee754/ldbl-128/e_jnl.c (__ieee754_jnl): Likewise.
	(__ieee754_ynl): Likewise.
	* sysdeps/ieee754/ldbl-128/s_scalblnl.c (__scalblnl): Likewise.
	* sysdeps/ieee754/ldbl-128/s_scalbnl.c (__scalbnl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_gammal_r.c (__ieee754_gammal_r):
	Likewise.
	* sysdeps/ieee754/ldbl-128ibm/e_jnl.c (__ieee754_jnl): Likewise.
	(__ieee754_ynl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_fmal.c (__fmal): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_scalblnl.c (__scalblnl): Likewise.
	* sysdeps/ieee754/ldbl-128ibm/s_scalbnl.c (__scalbnl): Likewise.
	* sysdeps/ieee754/ldbl-96/e_gammal_r.c (__ieee754_gammal_r):
	Likewise.
	* sysdeps/ieee754/ldbl-96/e_jnl.c (__ieee754_jnl): Likewise.
	(__ieee754_ynl)
	* sysdeps/ieee754/ldbl-96/s_asinhl.c (__asinhl): Likewise.
	* sysdeps/ieee754/ldbl-96/s_scalblnl.c (__scalblnl): Likewise.
	* sysdeps/ieee754/ldbl-opt/nldbl-copysign.c (copysignl): Likewise.
	* sysdeps/powerpc/power5+/fpu/s_modf.c (__modf): Likewise.
	* sysdeps/powerpc/power5+/fpu/s_modff.c (__modff): Likewise.

5 files changed, 13 insertions, 12 deletions

diff --git a/sysdeps/ieee754/ldbl-128/e_gammal_r.c b/sysdeps/ieee754/ldbl-128/e_gammal_r.c
index 837395e..b8690b0 100644
--- a/sysdeps/ieee754/ldbl-128/e_gammal_r.c
+++ b/sysdeps/ieee754/ldbl-128/e_gammal_r.c
@@ -203,16 +203,16 @@ __ieee754_gammal_r (_Float128 x, int *signgamp)
   if (isinf (ret) && x != 0)
     {
       if (*signgamp < 0)
-	return -(-__copysignl (LDBL_MAX, ret) * LDBL_MAX);
+	return -(-copysignl (LDBL_MAX, ret) * LDBL_MAX);
       else
-	return __copysignl (LDBL_MAX, ret) * LDBL_MAX;
+	return copysignl (LDBL_MAX, ret) * LDBL_MAX;
     }
   else if (ret == 0)
     {
       if (*signgamp < 0)
-	return -(-__copysignl (LDBL_MIN, ret) * LDBL_MIN);
+	return -(-copysignl (LDBL_MIN, ret) * LDBL_MIN);
       else
-	return __copysignl (LDBL_MIN, ret) * LDBL_MIN;
+	return copysignl (LDBL_MIN, ret) * LDBL_MIN;
     }
   else
     return ret;
diff --git a/sysdeps/ieee754/ldbl-128/e_jnl.c b/sysdeps/ieee754/ldbl-128/e_jnl.c
index 540b95c..7610d18 100644
--- a/sysdeps/ieee754/ldbl-128/e_jnl.c
+++ b/sysdeps/ieee754/ldbl-128/e_jnl.c
@@ -299,7 +299,7 @@ __ieee754_jnl (int n, _Float128 x)
   }
   if (ret == 0)
     {
-      ret = __copysignl (LDBL_MIN, ret) * LDBL_MIN;
+      ret = copysignl (LDBL_MIN, ret) * LDBL_MIN;
       __set_errno (ERANGE);
     }
   else
@@ -415,7 +415,7 @@ __ieee754_ynl (int n, _Float128 x)
   }
  out:
   if (isinf (ret))
-    ret = __copysignl (LDBL_MAX, ret) * LDBL_MAX;
+    ret = copysignl (LDBL_MAX, ret) * LDBL_MAX;
   return ret;
 }
 strong_alias (__ieee754_ynl, __ynl_finite)
diff --git a/sysdeps/ieee754/ldbl-128/s_copysignl.c b/sysdeps/ieee754/ldbl-128/s_copysignl.c
index d23e0f7..a501139 100644
--- a/sysdeps/ieee754/ldbl-128/s_copysignl.c
+++ b/sysdeps/ieee754/ldbl-128/s_copysignl.c
@@ -23,6 +23,7 @@ static char rcsid[] = "$NetBSD: $";
  * with the sign bit of y.
  */
 
+#define NO_MATH_REDIRECT
 #include <math.h>
 #include <math_private.h>
 #include <libm-alias-ldouble.h>
diff --git a/sysdeps/ieee754/ldbl-128/s_scalblnl.c b/sysdeps/ieee754/ldbl-128/s_scalblnl.c
index 5864eaf..590b2ca 100644
--- a/sysdeps/ieee754/ldbl-128/s_scalblnl.c
+++ b/sysdeps/ieee754/ldbl-128/s_scalblnl.c
@@ -46,16 +46,16 @@ _Float128 __scalblnl (_Float128 x, long int n)
 	    k = ((hx>>48)&0x7fff) - 114;
 	}
         if (k==0x7fff) return x+x;		/* NaN or Inf */
-	if (n< -50000) return tiny*__copysignl(tiny,x); /*underflow*/
+	if (n< -50000) return tiny*copysignl(tiny,x); /*underflow*/
         if (n> 50000 || k+n > 0x7ffe)
-	  return huge*__copysignl(huge,x); /* overflow  */
+	  return huge*copysignl(huge,x); /* overflow  */
 	/* Now k and n are bounded we know that k = k+n does not
 	   overflow.  */
         k = k+n;
         if (k > 0) 				/* normal result */
 	    {SET_LDOUBLE_MSW64(x,(hx&0x8000ffffffffffffULL)|(k<<48)); return x;}
         if (k <= -114)
-	  return tiny*__copysignl(tiny,x); 	/*underflow*/
+	  return tiny*copysignl(tiny,x); 	/*underflow*/
         k += 114;				/* subnormal result */
 	SET_LDOUBLE_MSW64(x,(hx&0x8000ffffffffffffULL)|(k<<48));
         return x*twom114;
diff --git a/sysdeps/ieee754/ldbl-128/s_scalbnl.c b/sysdeps/ieee754/ldbl-128/s_scalbnl.c
index e6fe796..ad9a0b1 100644
--- a/sysdeps/ieee754/ldbl-128/s_scalbnl.c
+++ b/sysdeps/ieee754/ldbl-128/s_scalbnl.c
@@ -46,16 +46,16 @@ _Float128 __scalbnl (_Float128 x, int n)
 	    k = ((hx>>48)&0x7fff) - 114;
 	}
         if (k==0x7fff) return x+x;		/* NaN or Inf */
-	if (n< -50000) return tiny*__copysignl(tiny,x); /*underflow*/
+	if (n< -50000) return tiny*copysignl(tiny,x); /*underflow*/
         if (n> 50000 || k+n > 0x7ffe)
-	  return huge*__copysignl(huge,x); /* overflow  */
+	  return huge*copysignl(huge,x); /* overflow  */
 	/* Now k and n are bounded we know that k = k+n does not
 	   overflow.  */
         k = k+n;
         if (k > 0) 				/* normal result */
 	    {SET_LDOUBLE_MSW64(x,(hx&0x8000ffffffffffffULL)|(k<<48)); return x;}
         if (k <= -114)
-	  return tiny*__copysignl(tiny,x); 	/*underflow*/
+	  return tiny*copysignl(tiny,x); 	/*underflow*/
         k += 114;				/* subnormal result */
 	SET_LDOUBLE_MSW64(x,(hx&0x8000ffffffffffffULL)|(k<<48));
         return x*twom114;