float128: Add wrappers to override ldbl-128 as float128.

This change defines float128_private.h which contains
macros used to override long double naming conventions
when building a ldbl file.

	* math/math.h [__HAVE_FLOAT128 && __GLIBC_USE (IEC_60559_TYPES_EXT)]
	(SNANF128): New macro.
	* math/e_sqrtf128.c: New file.
	* math/s_fmaxmag_template.c: Include math_private.h in order to
	make inline expansion of fabs128().
	* math/s_fminmag_template.c: Likewise.

	* sysdeps/ieee754/float128/e_acosf128.c: New file.
	* sysdeps/ieee754/float128/e_acoshf128.c: New file.
	* sysdeps/ieee754/float128/e_asinf128.c: New file.
	* sysdeps/ieee754/float128/e_atan2f128.c: New file.
	* sysdeps/ieee754/float128/e_atanhf128.c: New file.
	* sysdeps/ieee754/float128/e_coshf128.c: New file.
	* sysdeps/ieee754/float128/e_exp10f128.c: New file.
	* sysdeps/ieee754/float128/e_expf128.c: New file.
	* sysdeps/ieee754/float128/e_fmodf128.c: New file.
	* sysdeps/ieee754/float128/e_gammaf128_r.c: New file.
	* sysdeps/ieee754/float128/e_hypotf128.c: New file.
	* sysdeps/ieee754/float128/e_ilogbf128.c: New file.
	* sysdeps/ieee754/float128/e_j0f128.c: New file.
	* sysdeps/ieee754/float128/e_j1f128.c: New file.
	* sysdeps/ieee754/float128/e_jnf128.c: New file.
	* sysdeps/ieee754/float128/e_lgammaf128_r.c: New file.
	* sysdeps/ieee754/float128/e_log10f128.c: New file.
	* sysdeps/ieee754/float128/e_log2f128.c: New file.
	* sysdeps/ieee754/float128/e_logf128.c: New file.
	* sysdeps/ieee754/float128/e_powf128.c: New file.
	* sysdeps/ieee754/float128/e_rem_pio2f128.c: New file.
	* sysdeps/ieee754/float128/e_remainderf128.c: New file.
	* sysdeps/ieee754/float128/e_scalbf128.c: New file.
	* sysdeps/ieee754/float128/e_sinhf128.c: New file.
	* sysdeps/ieee754/float128/float128_private.h: New file.
	* sysdeps/ieee754/float128/gamma_productf128.c: New file.
	* sysdeps/ieee754/float128/ieee754_float128.h: New file.
	* sysdeps/ieee754/float128/k_cosf128.c: New file.
	* sysdeps/ieee754/float128/k_sincosf128.c: New file.
	* sysdeps/ieee754/float128/k_sinf128.c: New file.
	* sysdeps/ieee754/float128/k_tanf128.c: New file.
	* sysdeps/ieee754/float128/lgamma_negf128.c: New file.
	* sysdeps/ieee754/float128/lgamma_productf128.c: New file.
	* sysdeps/ieee754/float128/s_asinhf128.c: New file.
	* sysdeps/ieee754/float128/s_atanf128.c: New file.
	* sysdeps/ieee754/float128/s_cbrtf128.c: New file.
	* sysdeps/ieee754/float128/s_ceilf128.c: New file.
	* sysdeps/ieee754/float128/s_copysignf128.c: New file.
	* sysdeps/ieee754/float128/s_cosf128.c: New file.
	* sysdeps/ieee754/float128/s_erff128.c: New file.
	* sysdeps/ieee754/float128/s_expm1f128.c: New file.
	* sysdeps/ieee754/float128/s_fabsf128.c: New file.
	* sysdeps/ieee754/float128/s_finitef128.c: New file.
	* sysdeps/ieee754/float128/s_floorf128.c: New file.
	* sysdeps/ieee754/float128/s_fmaf128.c: New file.
	* sysdeps/ieee754/float128/s_fpclassifyf128.c: New file.
	* sysdeps/ieee754/float128/s_frexpf128.c: New file.
	* sysdeps/ieee754/float128/s_fromfpf128.c: New file.
	* sysdeps/ieee754/float128/s_fromfpxf128.c: New file.
	* sysdeps/ieee754/float128/s_getpayloadf128.c: New file.
	* sysdeps/ieee754/float128/s_isinff128.c: New file.
	* sysdeps/ieee754/float128/s_isnanf128.c: New file.
	* sysdeps/ieee754/float128/s_issignalingf128.c: New file.
	* sysdeps/ieee754/float128/s_llrintf128.c: New file.
	* sysdeps/ieee754/float128/s_llroundf128.c: New file.
	* sysdeps/ieee754/float128/s_log1pf128.c: New file.
	* sysdeps/ieee754/float128/s_logbf128.c: New file.
	* sysdeps/ieee754/float128/s_lrintf128.c: New file.
	* sysdeps/ieee754/float128/s_lroundf128.c: New file.
	* sysdeps/ieee754/float128/s_modff128.c: New file.
	* sysdeps/ieee754/float128/s_nearbyintf128.c: New file.
	* sysdeps/ieee754/float128/s_nextafterf128.c: New file.
	* sysdeps/ieee754/float128/s_nexttowardf128.c: New file.
	* sysdeps/ieee754/float128/s_nextupf128.c: New file.
	* sysdeps/ieee754/float128/s_remquof128.c: New file.
	* sysdeps/ieee754/float128/s_rintf128.c: New file.
	* sysdeps/ieee754/float128/s_roundevenf128.c: New file.
	* sysdeps/ieee754/float128/s_roundf128.c: New file.
	* sysdeps/ieee754/float128/s_scalblnf128.c: New file.
	* sysdeps/ieee754/float128/s_scalbnf128.c: New file.
	* sysdeps/ieee754/float128/s_setpayloadf128.c: New file.
	* sysdeps/ieee754/float128/s_setpayloadsigf128.c: New file.
	* sysdeps/ieee754/float128/s_signbitf128.c: New file.
	* sysdeps/ieee754/float128/s_significandf128.c: New file.
	* sysdeps/ieee754/float128/s_sincosf128.c: New file.
	* sysdeps/ieee754/float128/s_sinf128.c: New file.
	* sysdeps/ieee754/float128/s_tanf128.c: New file.
	* sysdeps/ieee754/float128/s_tanhf128.c: New file.
	* sysdeps/ieee754/float128/s_totalorderf128.c: New file.
	* sysdeps/ieee754/float128/s_totalordermagf128.c: New file.
	* sysdeps/ieee754/float128/s_truncf128.c: New file.
	* sysdeps/ieee754/float128/s_ufromfpf128.c: New file.
	* sysdeps/ieee754/float128/s_ufromfpxf128.c: New file.
	* sysdeps/ieee754/float128/t_sincosf128.c: New file.
	* sysdeps/ieee754/float128/x2y2m1f128.c: New file.

	* sysdeps/ieee754/ldbl-128ibm/bits/iscanonical.h:
	(__iscanonicalf128): Define as a macro.

1 files changed, 140 insertions, 0 deletions

diff --git a/sysdeps/ieee754/float128/ieee754_float128.h b/sysdeps/ieee754/float128/ieee754_float128.h
new file mode 100644
index 0000000000..e8e7211d88
--- /dev/null
+++ b/sysdeps/ieee754/float128/ieee754_float128.h
@@ -0,0 +1,140 @@
+/* _Float128 IEEE like macros.
+   Copyright (C) 2017 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <http://www.gnu.org/licenses/>.  */
+#ifndef _IEEE754_FLOAT128_H
+#define _IEEE754_FLOAT128_H
+
+#include <endian.h>
+#include <stdint.h>
+
+# if __FLOAT_WORD_ORDER == BIG_ENDIAN
+#  define __FLT_EORDER2(t, a, b) t a; t b;
+#  define __FLT_EORDER4(t, a, b, c, d) \
+			t a; t b; t c; t d;
+#  define __FLT_EORDER6(t, a, b, c, d, e, f)  \
+			t a; t b; t c; t d; t e; t f;
+#  define __FLT_EORDER7(t, a, b, c, d, e, f, g)  \
+			t a; t b; t c; t d; t e; t f; t g;
+# else
+#  define __FLT_EORDER2(t, a, b) \
+			t b; t a;
+#  define __FLT_EORDER4(t, a, b, c, d) \
+			t d; t c; t b; t a;
+#  define __FLT_EORDER6(t, a, b, c, d, e, f)  \
+			t f; t e; t d; t c; t b; t a;
+#  define __FLT_EORDER7(t, a, b, c, d, e, f, g)  \
+			t g; t f; t e; t d; t c; t b; t a;
+# endif
+
+/* A union which permits us to convert between _Float128 and
+   four 32 bit ints or two 64 bit ints.  */
+
+typedef union
+{
+  _Float128 value;
+  struct
+  {
+    __FLT_EORDER2 (uint64_t, msw, lsw);
+  } parts64;
+  struct
+  {
+    __FLT_EORDER4 (uint32_t, w0, w1, w2, w3);
+  } parts32;
+} ieee854_float128_shape_type;
+
+/* Get two 64 bit ints from a _Float128.  */
+
+# define GET_FLOAT128_WORDS64(ix0,ix1,d)			\
+do {								\
+  ieee854_float128_shape_type qw_u;				\
+  qw_u.value = (d);						\
+  (ix0) = qw_u.parts64.msw;					\
+  (ix1) = qw_u.parts64.lsw;					\
+} while (0)
+
+/* Set a _Float128 from two 64 bit ints.  */
+
+# define SET_FLOAT128_WORDS64(d,ix0,ix1)			\
+do {								\
+  ieee854_float128_shape_type qw_u;				\
+  qw_u.parts64.msw = (ix0);					\
+  qw_u.parts64.lsw = (ix1);					\
+  (d) = qw_u.value;						\
+} while (0)
+
+/* Get the more significant 64 bits of a _Float128 mantissa.  */
+
+# define GET_FLOAT128_MSW64(v,d)				\
+do {								\
+  ieee854_float128_shape_type sh_u;				\
+  sh_u.value = (d);						\
+  (v) = sh_u.parts64.msw;					\
+} while (0)
+
+/* Set the more significant 64 bits of a _Float128 mantissa from an int.  */
+
+# define SET_FLOAT128_MSW64(d,v)				\
+do {								\
+  ieee854_float128_shape_type sh_u;				\
+  sh_u.value = (d);						\
+  sh_u.parts64.msw = (v);					\
+  (d) = sh_u.value;						\
+} while (0)
+
+/* Get the least significant 64 bits of a _Float128 mantissa.  */
+
+# define GET_FLOAT128_LSW64(v,d)				\
+do {								\
+  ieee854_float128_shape_type sh_u;				\
+  sh_u.value = (d);						\
+  (v) = sh_u.parts64.lsw;					\
+} while (0)
+
+/* Likewise, some helper macros which are exposed via ieee754.h for
+   C99 real types, but not _Float128.  */
+
+union ieee854_float128
+  {
+    _Float128 d;
+
+    /* This is the IEEE 854 quad-precision format.  */
+    struct
+      {
+	__FLT_EORDER6 (unsigned int, negative:1,
+				     exponent:15,
+				     mantissa0:16,
+				     mantissa1:32,
+				     mantissa2:32,
+				     mantissa3:32)
+      } ieee;
+
+    /* This format makes it easier to see if a NaN is a signalling NaN.  */
+    struct
+      {
+	__FLT_EORDER7 (unsigned int, negative:1,
+				     exponent:15,
+				     quiet_nan:1,
+				     mantissa0:15,
+				     mantissa1:32,
+				     mantissa2:32,
+				     mantissa3:32)
+      } ieee_nan;
+  };
+
+#define IEEE854_FLOAT128_BIAS 0x3fff /* Added to exponent.  */
+
+#endif