Use more uniform style of including headers.

Put external headers before internal ones. While there, replace a lot of
occurences of "openlibm.h" with <openlibm.h>. It should be thought of as
an external header, as it is installed along with the library.

amd64/fenv.c

@@ -32,7 +32,7 @@
 #ifdef _WIN32
 #define __fenv_static
 #endif
-#include "openlibm_fenv.h"
+#include <openlibm_fenv.h>
 
 #ifdef __GNUC_GNU_INLINE__
 #error "This file must be compiled with C99 'inline' semantics"

ld128/e_rem_pio2l.h

@@ -23,8 +23,8 @@
  */
 
 #include <float.h>
+#include <openlibm.h>
 
-#include "openlibm.h"
 #include "math_private.h"
 #include "fpmath.h"
 

ld128/k_tanl.c

@@ -18,7 +18,8 @@
  * ld128 version of k_tan.c.  See ../src/k_tan.c for most comments.
  */
 
-#include "openlibm.h"
+#include <openlibm.h>
+
 #include "math_private.h"
 
 /*

ld128/s_exp2l.c

@@ -28,10 +28,10 @@
 //__FBSDID("$FreeBSD: src/lib/msun/ld128/s_exp2l.c,v 1.3 2008/02/13 10:44:44 bde Exp $");
 
 #include <float.h>
+#include <openlibm.h>
 #include <stdint.h>
 
 #include "fpmath.h"
-#include "openlibm.h"
 #include "math_private.h"
 
 #define	TBLBITS	7

ld128/s_nanl.c

@@ -26,7 +26,7 @@
  * $FreeBSD: src/lib/msun/ld128/s_nanl.c,v 1.3 2008/03/02 20:16:55 das Exp $
  */
 
-#include "openlibm.h"
+#include <openlibm.h>
 
 #include "fpmath.h"
 #include "math_private.h"

ld80/e_coshl.c

@@ -31,7 +31,8 @@
  *	only coshl(0)=1 is exact for finite x.
  */
 
-#include "openlibm.h"
+#include <openlibm.h>
+
 #include "math_private.h"
 
 static const long double one = 1.0, half=0.5, huge = 1.0e4900L;

ld80/e_rem_pio2l.h

@@ -23,10 +23,9 @@
  */
 
 #include <float.h>
+#include <openlibm.h>
 
-#include "openlibm.h"
 #include "math_private.h"
-#include "openlibm.h"
 
 #define	BIAS	(LDBL_MAX_EXP - 1)
 

ld80/k_tanl.c

@@ -18,7 +18,8 @@
  * ld80 version of k_tan.c.  See ../src/k_tan.c for most comments.
  */
 
-#include "openlibm.h"
+#include <openlibm.h>
+
 #include "math_private.h"
 
 /*

ld80/s_exp2l.c

@@ -32,8 +32,8 @@
 
 #include "amd64/bsd_ieeefp.h"
 
-#include "openlibm.h"
-#include "openlibm.h"
+#include <openlibm.h>
+
 #include "math_private.h"
 
 #define	TBLBITS	7

ld80/s_nanl.c

@@ -26,9 +26,8 @@
  * $FreeBSD: src/lib/msun/ld80/s_nanl.c,v 1.2 2007/12/18 23:46:31 das Exp $
  */
 
-#include "openlibm.h"
+#include <openlibm.h>
 
-#include "openlibm.h"
 #include "math_private.h"
 
 DLLEXPORT long double

ld80/s_truncl.c

@@ -24,7 +24,7 @@
 //#include <machine/ieee.h>
 
 #include <float.h>
-#include "openlibm.h"
+#include <openlibm.h>
 #include <stdint.h>
 
 #include "math_private.h"

src/e_acos.c

@@ -39,8 +39,8 @@
  */
 
 #include <float.h>
+#include <openlibm.h>
 
-#include "openlibm.h"
 #include "math_private.h"
 
 static const double

src/e_acosf.c

@@ -16,7 +16,8 @@
 #include "cdefs-compat.h"
 //__FBSDID("$FreeBSD: src/lib/msun/src/e_acosf.c,v 1.11 2008/08/03 17:39:54 das Exp $");
 
-#include "openlibm.h"
+#include <openlibm.h>
+
 #include "math_private.h"
 
 static const float

src/e_acosh.c

@@ -29,7 +29,8 @@
  *	acosh(NaN) is NaN without signal.
  */
 
-#include "openlibm.h"
+#include <openlibm.h>
+
 #include "math_private.h"
 
 static const double

src/e_acoshf.c

@@ -16,7 +16,8 @@
 #include "cdefs-compat.h"
 //__FBSDID("$FreeBSD: src/lib/msun/src/e_acoshf.c,v 1.8 2008/02/22 02:30:34 das Exp $");
 
-#include "openlibm.h"
+#include <openlibm.h>
+
 #include "math_private.h"
 
 static const float

src/e_acosl.c

@@ -21,9 +21,9 @@
  */
 
 #include <float.h>
+#include <openlibm.h>
 
 #include "invtrig.h"
-#include "openlibm.h"
 #include "math_private.h"
 
 static const long double

src/e_asin.c

@@ -45,8 +45,8 @@
  */
 
 #include <float.h>
+#include <openlibm.h>
 
-#include "openlibm.h"
 #include "math_private.h"
 
 static const double

src/e_asinf.c

@@ -16,7 +16,8 @@
 #include "cdefs-compat.h"
 //__FBSDID("$FreeBSD: src/lib/msun/src/e_asinf.c,v 1.13 2008/08/08 00:21:27 das Exp $");
 
-#include "openlibm.h"
+#include <openlibm.h>
+
 #include "math_private.h"
 
 static const float

src/e_asinl.c

@@ -21,9 +21,9 @@
  */
 
 #include <float.h>
+#include <openlibm.h>
 
 #include "invtrig.h"
-#include "openlibm.h"
 #include "math_private.h"
 
 static const long double

src/e_atan2.c

@@ -43,8 +43,8 @@
  */
 
 #include <float.h>
+#include <openlibm.h>
 
-#include "openlibm.h"
 #include "math_private.h"
 
 static volatile double

src/e_atan2f.c

@@ -16,7 +16,8 @@
 #include "cdefs-compat.h"
 //__FBSDID("$FreeBSD: src/lib/msun/src/e_atan2f.c,v 1.12 2008/08/03 17:39:54 das Exp $");
 
-#include "openlibm.h"
+#include <openlibm.h>
+
 #include "math_private.h"
 
 static volatile float

src/e_atan2l.c

@@ -22,9 +22,9 @@
  */
 
 #include <float.h>
+#include <openlibm.h>
 
 #include "invtrig.h"
-#include "openlibm.h"
 #include "math_private.h"
 
 static volatile long double

src/e_atanh.c

@@ -33,7 +33,8 @@
  *
  */
 
-#include "openlibm.h"
+#include <openlibm.h>
+
 #include "math_private.h"
 
 static const double one = 1.0, huge = 1e300;

src/e_atanhf.c

@@ -16,7 +16,8 @@
 #include "cdefs-compat.h"
 //__FBSDID("$FreeBSD: src/lib/msun/src/e_atanhf.c,v 1.7 2008/02/22 02:30:34 das Exp $");
 
-#include "openlibm.h"
+#include <openlibm.h>
+
 #include "math_private.h"
 
 static const float one = 1.0, huge = 1e30;

src/e_cosh.c

@@ -35,7 +35,8 @@
  *	only cosh(0)=1 is exact for finite x.
  */
 
-#include "openlibm.h"
+#include <openlibm.h>
+
 #include "math_private.h"
 
 static const double one = 1.0, half=0.5, huge = 1.0e300;

src/e_coshf.c

@@ -16,7 +16,8 @@
 #include "cdefs-compat.h"
 //__FBSDID("$FreeBSD: src/lib/msun/src/e_coshf.c,v 1.9 2011/10/21 06:28:47 das Exp $");
 
-#include "openlibm.h"
+#include <openlibm.h>
+
 #include "math_private.h"
 
 static const float one = 1.0, half=0.5, huge = 1.0e30;

src/e_exp.c

@@ -77,8 +77,8 @@
  */
 
 #include <float.h>
+#include <openlibm.h>
 
-#include "openlibm.h"
 #include "math_private.h"
 
 static const double

src/e_expf.c

@@ -17,8 +17,8 @@
 //__FBSDID("$FreeBSD: src/lib/msun/src/e_expf.c,v 1.16 2011/10/21 06:26:38 das Exp $");
 
 #include <float.h>
+#include <openlibm.h>
 
-#include "openlibm.h"
 #include "math_private.h"
 
 static const float

src/e_fmod.c

@@ -20,7 +20,8 @@
  * Method: shift and subtract
  */
 
-#include "openlibm.h"
+#include <openlibm.h>
+
 #include "math_private.h"
 
 static const double one = 1.0, Zero[] = {0.0, -0.0,};

src/e_fmodf.c

@@ -22,7 +22,8 @@
  * Method: shift and subtract
  */
 
-#include "openlibm.h"
+#include <openlibm.h>
+
 #include "math_private.h"
 
 static const float one = 1.0, Zero[] = {0.0, -0.0,};

src/e_fmodl.c

@@ -14,10 +14,11 @@
 //__FBSDID("$FreeBSD: src/lib/msun/src/e_fmodl.c,v 1.2 2008/07/31 20:09:47 das Exp $");
 
 #include <float.h>
+#include <openlibm.h>
 #include <stdint.h>
 
 #include "fpmath.h"
-#include "openlibm.h"
+
 #include "math_private.h"
 
 #define	BIAS (LDBL_MAX_EXP - 1)

src/e_gamma.c

@@ -21,7 +21,8 @@
  * Method: call __ieee754_gamma_r
  */
 
-#include "openlibm.h"
+#include <openlibm.h>
+
 #include "math_private.h"
 
 extern int signgam;

src/e_gamma_r.c

@@ -22,7 +22,8 @@
  * Method: See __ieee754_lgamma_r
  */
 
-#include "openlibm.h"
+#include <openlibm.h>
+
 #include "math_private.h"
 
 DLLEXPORT double

src/e_gammaf.c

@@ -22,7 +22,8 @@
  * Method: call __ieee754_gammaf_r
  */
 
-#include "openlibm.h"
+#include <openlibm.h>
+
 #include "math_private.h"
 
 extern int signgam;

src/e_gammaf_r.c

@@ -23,7 +23,8 @@
  * Method: See __ieee754_lgammaf_r
  */
 
-#include "openlibm.h"
+#include <openlibm.h>
+
 #include "math_private.h"
 
 DLLEXPORT float

src/e_hypot.c

@@ -47,8 +47,8 @@
  */
 
 #include <float.h>
+#include <openlibm.h>
 
-#include "openlibm.h"
 #include "math_private.h"
 
 DLLEXPORT double

src/e_hypotf.c

@@ -16,7 +16,8 @@
 #include "cdefs-compat.h"
 //__FBSDID("$FreeBSD: src/lib/msun/src/e_hypotf.c,v 1.14 2011/10/15 07:00:28 das Exp $");
 
-#include "openlibm.h"
+#include <openlibm.h>
+
 #include "math_private.h"
 
 DLLEXPORT float

src/e_hypotl.c

@@ -16,9 +16,9 @@
 /* long double version of hypot().  See e_hypot.c for most comments. */
 
 #include <float.h>
+#include <openlibm.h>
 
 #include "fpmath.h"
-#include "openlibm.h"
 #include "math_private.h"
 
 #define	GET_LDBL_MAN(h, l, v) do {	\

src/e_j0.c

@@ -61,7 +61,8 @@
  *	3. Special cases: y0(0)=-inf, y0(x<0)=NaN, y0(inf)=0.
  */
 
-#include "openlibm.h"
+#include <openlibm.h>
+
 #include "math_private.h"
 
 static double pzero(double), qzero(double);