5261 libm should stop using synonyms.h
5298 fabs is 0-sized, confuses dis(1) and others
Reviewed by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
Approved by: Gordon Ross <gwr@nexenta.com>
5262 libm needs to be carefully unifdef'd
5268 libm doesn't need to hide symbols which are already local
Reviewed by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
Reviewed by: Igor Kozhukhov <ikozhukhov@gmail.com>
Reviewed by: Gordon Ross <gwr@nexenta.com>
Approved by: Gordon Ross <gwr@nexenta.com>

@@ -25,19 +25,17 @@
 /*
  * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
  * Use is subject to license terms.
  */
 
-#if defined(ELFOBJ)
-#pragma weak logbf = __logbf
-#endif
+#pragma weak __logbf = logbf
 
 #include "libm.h"
 #include "xpg6.h"       /* __xpg6 */
 #define _C99SUSv3_logb  _C99SUSv3_logb_subnormal_is_like_ilogb
 
-#if defined(USE_FPSCALE) || defined(__x86)
+#if defined(__x86)
 static const float two25 = 33554432.0F;
 #else
 /*
  * v: a non-zero subnormal |x|
  */

@@ -52,11 +50,11 @@
         if (v & 0xf0)
                 r += 4, v >>= 4;
         v <<= 1;
         return (r + ((0xffffaa50 >> v) & 0x3));
 }
-#endif  /* defined(USE_FPSCALE) */
+#endif  /* defined(__x86) */
 
 static float
 raise_division(float t) {
 #pragma STDC FENV_ACCESS ON
         static const float zero = 0.0F;

@@ -69,11 +67,11 @@
 
         if (k < 0x00800000) {
                 if (k == 0)
                         return (raise_division(-1.0F));
                 else if ((__xpg6 & _C99SUSv3_logb) != 0) {
-#if defined(USE_FPSCALE) || defined(__x86)
+#if defined(__x86)
                         x *= two25;
                         return ((float) (((*((int *) &x) & 0x7f800000) >> 23) -
                                 152));
 #else
                         return ((float) ilogbf_subnormal(k));