Add more tests of clog and clog10.

This patch adds some randomly-generated tests of clog and clog10 that
are observed to increase ulps on x86_64.

Tested for x86_64 and x86 and ulps updated accordingly.

	* math/auto-libm-test-in: Add more tests of clog and clog10.
	* math/auto-libm-test-out: Regenerated.
	* sysdeps/i386/fpu/libm-test-ulps: Update.
	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.

ChangeLog

@@ -1,3 +1,10 @@
+2015-04-09  Joseph Myers  <joseph@codesourcery.com>
+
+	* math/auto-libm-test-in: Add more tests of clog and clog10.
+	* math/auto-libm-test-out: Regenerated.
+	* sysdeps/i386/fpu/libm-test-ulps: Update.
+	* sysdeps/x86_64/fpu/libm-test-ulps: Likewise.
+
 2015-04-09  Roland McGrath  <roland@hack.frob.com>
 
 	* Makeconfig (module-cppflags): Exclude all .v.i files.

math/auto-libm-test-in

@@ -564,6 +564,11 @@ clog 0x7.40ac68p+0 0x4.251bb8p-4
 clog 0xa.3ac3cp+68 0x1.47239ep+68
 clog 0x3.8ff10cp+0 -0x6.b0794p-4
 
+clog 0xa.a39ffp-4 -0x2.360c38p-4
+clog 0x6.9a4569067b6ecp-4 0xb.0a30d15e7d798p-4
+clog -0x1.105436p+0 -0x6.66396df3cc7ap-4
+clog -0x2.c90b952282392dep-4 0x1.43cda16634cc7046p+0
+
 clog 0x1.fffffep+127 0x1.fffffep+127
 clog 0x1.fffffep+127 1.0
 clog 0x1p-149 0x1p-149
@@ -692,6 +697,17 @@ clog10 0x7.40ac68p+0 0x4.251bb8p-4
 clog10 0xa.3ac3cp+68 0x1.47239ep+68
 clog10 0x3.8ff10cp+0 -0x6.b0794p-4
 
+clog10 0x2.83f8ap+0 -0xb.0b529p-4
+clog10 -0x2.eb21fcp-4 -0x6.59bbc8p-4
+clog10 -0x3.3f7fc4p-4 0xb.ba599p-4
+clog10 0x1.cd1ab2p-124 -0x8p-152
+clog10 0xa.32054p-4 0x2.c7e71cp-4
+clog10 -0x5.9ecf8c7b5a0f4p-4 0xa.a945e5f8761c8p-4
+clog10 0x1.7a858p+0 -0x6.d940dp-4
+clog10 -0x2.51320d99da5a2p-4 0x3.b8176p-4
+clog10 -0x1.25c2d3e172df8p+0 0
+clog10 0x1.0c684e35d0b2ap+0 -0x7.37df8a65c28fp-4
+
 clog10 0x1.fffffep+127 0x1.fffffep+127
 clog10 0x1.fffffep+127 1.0
 clog10 0x1p-149 0x1p-149