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authorPaul E. Murphy <murphyp@linux.vnet.ibm.com>2017-05-04 17:00:33 -0300
committerGabriel F. T. Gomes <gftg@linux.vnet.ibm.com>2017-05-15 10:23:28 -0300
commit81f26b53b5e9a3520fb3cfd0be743339e13dfb56 (patch)
tree13b24c1c3a98b50ccbd0d8a6ea20edf34716284e
parent33d523d7f8c8ffdeecd03df452d80bfda3bc25d4 (diff)
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float128: Add private _Float128 declarations for libm.
Add the necessary bits to the private headers to support building the _Float128 libm functions. A local override for float.h is provided to include the missing *FLT128 macros implied by TS 18661-3 for this type when compiling prior to GCC 7. * include/complex.h (__kernel_casinhf128): New declaration. * include/float.h: New file. * include/math.h (__finitef128): Add a hidden def. (__isinff128): Likewise. (__isnanf128): Likewise. (__fpclassify): Likewise. (__issignalling): Likewise. (__expf128): Likewise. (__expm1f128): Likewise. * sysdeps/generic/fix-fp-int-convert-overflow.h: (FIX_FLT128_LONG_CONVERT_OVERFLOW): New macro. (FIX_FLT128_LLONG_CONVERT_OVERFLOW): Likewise. * sysdeps/generic/math-type-macros-float128.h: New file. * sysdeps/generic/math_private.h: Include bits/floatn.h and math_private_calls.h for _Float128. (__isinff128): New inline implementation used when GCC < 7.0, since in this case __builtin_isinf_sign is broken. (fabsf128): New inline implementation that calls the builtin. (__EXPR_FLT128): New macro. (min_of_type): Optionally include _Float128 types too. * sysdeps/generic/math_private_calls.h (__kernel_sincos): Declare for _Float128. (__kernel_rem_pio2): Likewise. * sysdeps/ieee754/ldbl-opt/s_sin.c: (__DECL_SIMD_sincos_disablef128): New macro.
-rw-r--r--ChangeLog34
-rw-r--r--include/complex.h3
-rw-r--r--include/float.h31
-rw-r--r--include/math.h13
-rw-r--r--sysdeps/generic/fix-fp-int-convert-overflow.h2
-rw-r--r--sysdeps/generic/math-type-macros-float128.h39
-rw-r--r--sysdeps/generic/math_private.h51
-rw-r--r--sysdeps/generic/math_private_calls.h4
-rw-r--r--sysdeps/ieee754/ldbl-opt/s_sin.c1
9 files changed, 175 insertions, 3 deletions
diff --git a/ChangeLog b/ChangeLog
index 75ccb4b..d228205 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,37 @@
+2017-05-14 Paul E. Murphy <murphyp@linux.vnet.ibm.com>
+ Gabriel F. T. Gomes <gftg@linux.vnet.ibm.com>
+
+ * include/complex.h (__kernel_casinhf128): New declaration.
+ * include/float.h: New file.
+ * include/math.h (__finitef128): Add a hidden def.
+ (__isinff128): Likewise.
+ (__isnanf128): Likewise.
+ (__fpclassify): Likewise.
+ (__issignalling): Likewise.
+ (__expf128): Likewise.
+ (__expm1f128): Likewise.
+
+ * sysdeps/generic/fix-fp-int-convert-overflow.h:
+ (FIX_FLT128_LONG_CONVERT_OVERFLOW): New macro.
+ (FIX_FLT128_LLONG_CONVERT_OVERFLOW): Likewise.
+
+ * sysdeps/generic/math-type-macros-float128.h: New file.
+
+ * sysdeps/generic/math_private.h: Include bits/floatn.h and
+ math_private_calls.h for _Float128.
+ (__isinff128): New inline implementation used when GCC < 7.0,
+ since in this case __builtin_isinf_sign is broken.
+ (fabsf128): New inline implementation that calls the builtin.
+ (__EXPR_FLT128): New macro.
+ (min_of_type): Optionally include _Float128 types too.
+
+ * sysdeps/generic/math_private_calls.h (__kernel_sincos):
+ Declare for _Float128.
+ (__kernel_rem_pio2): Likewise.
+
+ * sysdeps/ieee754/ldbl-opt/s_sin.c:
+ (__DECL_SIMD_sincos_disablef128): New macro.
+
2017-05-14 Gabriel F. T. Gomes <gftg@linux.vnet.ibm.com>
* math/math.h: Include bits/math-finite.h for float128.
diff --git a/include/complex.h b/include/complex.h
index 082e71f..2c86709 100644
--- a/include/complex.h
+++ b/include/complex.h
@@ -8,6 +8,9 @@
extern complex float __kernel_casinhf (complex float z, int adj);
extern complex double __kernel_casinh (complex double z, int adj);
extern complex long double __kernel_casinhl (complex long double z, int adj);
+# if __HAVE_DISTINCT_FLOAT128
+extern __CFLOAT128 __kernel_casinhf128 (__CFLOAT128 z, int adj);
+# endif
# endif
#endif
diff --git a/include/float.h b/include/float.h
new file mode 100644
index 0000000..20c4acb
--- /dev/null
+++ b/include/float.h
@@ -0,0 +1,31 @@
+#ifndef _LIBC_FLOAT_H
+#define _LIBC_FLOAT_H
+
+#ifndef _ISOMAC
+# define __STDC_WANT_IEC_60559_TYPES_EXT__
+#endif
+
+#include_next <float.h>
+
+/* Supplement float.h macros for _Float128 for older compilers
+ which do not yet support the type. These are described in
+ TS 18661-3. */
+#ifndef _ISOMAC
+# include <features.h>
+# include <bits/floatn.h>
+# if !__GNUC_PREREQ (7, 0) && __HAVE_DISTINCT_FLOAT128
+# define FLT128_MANT_DIG 113
+# define FLT128_DECIMAL_DIG 36
+# define FLT128_DIG 33
+# define FLT128_MIN_EXP (-16381)
+# define FLT128_MIN_10_EXP (-4931)
+# define FLT128_MAX_EXP 16384
+# define FLT128_MAX_10_EXP 4932
+# define FLT128_MAX 1.18973149535723176508575932662800702e+4932Q
+# define FLT128_EPSILON 1.92592994438723585305597794258492732e-34Q
+# define FLT128_MIN 3.36210314311209350626267781732175260e-4932Q
+# define FLT128_TRUE_MIN 6.47517511943802511092443895822764655e-4966Q
+# endif
+#endif
+
+#endif /* _LIBC_FLOAT_H */
diff --git a/include/math.h b/include/math.h
index 6ff6783..a069680 100644
--- a/include/math.h
+++ b/include/math.h
@@ -26,6 +26,12 @@ hidden_proto (__finitel)
hidden_proto (__isinfl)
hidden_proto (__isnanl)
# endif
+
+# if __HAVE_DISTINCT_FLOAT128
+hidden_proto (__finitef128)
+hidden_proto (__isinff128)
+hidden_proto (__isnanf128)
+# endif
# endif
libm_hidden_proto (__fpclassify)
@@ -43,5 +49,12 @@ libm_hidden_proto (__expl)
libm_hidden_proto (__expm1l)
# endif
+# if __HAVE_DISTINCT_FLOAT128
+libm_hidden_proto (__fpclassifyf128)
+libm_hidden_proto (__issignalingf128)
+libm_hidden_proto (__expf128)
+libm_hidden_proto (__expm1f128)
+# endif
+
#endif
#endif
diff --git a/sysdeps/generic/fix-fp-int-convert-overflow.h b/sysdeps/generic/fix-fp-int-convert-overflow.h
index f53eaf0..4b0cd91 100644
--- a/sysdeps/generic/fix-fp-int-convert-overflow.h
+++ b/sysdeps/generic/fix-fp-int-convert-overflow.h
@@ -29,5 +29,7 @@
#define FIX_DBL_LLONG_CONVERT_OVERFLOW 0
#define FIX_LDBL_LONG_CONVERT_OVERFLOW 0
#define FIX_LDBL_LLONG_CONVERT_OVERFLOW 0
+#define FIX_FLT128_LONG_CONVERT_OVERFLOW 0
+#define FIX_FLT128_LLONG_CONVERT_OVERFLOW 0
#endif /* fix-fp-int-convert-overflow.h */
diff --git a/sysdeps/generic/math-type-macros-float128.h b/sysdeps/generic/math-type-macros-float128.h
new file mode 100644
index 0000000..dcb8560
--- /dev/null
+++ b/sysdeps/generic/math-type-macros-float128.h
@@ -0,0 +1,39 @@
+/* Helper macros for _Float128 variants of type generic functions of libm.
+ 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 _MATH_TYPE_MACROS_FLOAT128
+#define _MATH_TYPE_MACROS_FLOAT128
+
+#include <math.h>
+#include <complex.h>
+
+#define M_LIT(c) __f128 (c)
+#define M_PFX FLT128
+#define M_SUF(c) c ## f128
+#define FLOAT _Float128
+#define M_STRTO_NAN __strtof128_nan
+
+#define CFLOAT __CFLOAT128
+
+#define M_MLIT(c) c ## f128
+
+
+/* Supply the generic macros. */
+#include <math-type-macros.h>
+
+#endif
diff --git a/sysdeps/generic/math_private.h b/sysdeps/generic/math_private.h
index 4d8a35f..6ea5e25 100644
--- a/sysdeps/generic/math_private.h
+++ b/sysdeps/generic/math_private.h
@@ -23,6 +23,9 @@
#include <float.h>
#include <get-rounding-mode.h>
+/* Gather machine dependent _Floatn support. */
+#include <bits/floatn.h>
+
/* The original fdlibm code used statements like:
n0 = ((*(int*)&one)>>29)^1; * index of high word *
ix0 = *(n0+(int*)&x); * high word of x *
@@ -211,6 +214,41 @@ do { \
#undef _MSUF_
#undef _Mdouble_
+#if __HAVE_DISTINCT_FLOAT128
+# define _Mdouble_ _Float128
+# define _MSUF_ f128
+# define __MATH_DECLARING_FLOATN
+# include <math_private_calls.h>
+# undef __MATH_DECLARING_FLOATN
+# undef _MSUF_
+# undef _Mdouble_
+#endif
+
+#if __HAVE_DISTINCT_FLOAT128
+
+/* __builtin_isinf_sign is broken in GCC < 7 for float128. */
+# if ! __GNUC_PREREQ (7, 0)
+# include <ieee754_float128.h>
+extern inline int
+__isinff128 (_Float128 x)
+{
+ int64_t hx, lx;
+ GET_FLOAT128_WORDS64 (hx, lx, x);
+ lx |= (hx & 0x7fffffffffffffffLL) ^ 0x7fff000000000000LL;
+ lx |= -lx;
+ return ~(lx >> 63) & (hx >> 62);
+}
+# endif
+
+extern inline _Float128
+fabsf128 (_Float128 x)
+{
+ return __builtin_fabsf128 (x);
+}
+#endif
+
+
+
/* fdlibm kernel function */
extern double __kernel_standard (double,double,int);
extern float __kernel_standard_f (float,float,int);
@@ -263,13 +301,24 @@ extern void __docos (double __x, double __dx, double __v[]);
})
#endif
+#if __HAVE_DISTINCT_FLOAT128
+# define __EXPR_FLT128(x, yes, no) \
+ __builtin_choose_expr (__builtin_types_compatible_p \
+ (__typeof (x), long double), no, yes)
+#else
+# define __EXPR_FLT128(x, yes, no) no
+#endif
+
+
#define fabs_tg(x) __MATH_TG ((x), (__typeof (x)) __builtin_fabs, (x))
+
#define min_of_type(type) __builtin_choose_expr \
(__builtin_types_compatible_p (type, float), \
FLT_MIN, \
__builtin_choose_expr \
(__builtin_types_compatible_p (type, double), \
- DBL_MIN, LDBL_MIN))
+ DBL_MIN, \
+ __EXPR_FLT128 (x, FLT128_MIN, LDBL_MIN)))
/* If X (which is not a NaN) is subnormal, force an underflow
exception. */
diff --git a/sysdeps/generic/math_private_calls.h b/sysdeps/generic/math_private_calls.h
index 8c1d304..34bbd5e 100644
--- a/sysdeps/generic/math_private_calls.h
+++ b/sysdeps/generic/math_private_calls.h
@@ -64,12 +64,12 @@ extern _Mdouble_ __MSUF (__kernel_sin) (_Mdouble_, _Mdouble_, int);
extern _Mdouble_ __MSUF (__kernel_cos) (_Mdouble_, _Mdouble_);
extern _Mdouble_ __MSUF (__kernel_tan) (_Mdouble_, _Mdouble_, int);
-#if defined __MATH_DECLARING_LONG_DOUBLE
+#if defined __MATH_DECLARING_LONG_DOUBLE || defined __MATH_DECLARING_FLOATN
extern void __MSUF (__kernel_sincos) (_Mdouble_, _Mdouble_,
_Mdouble_ *, _Mdouble_ *, int);
#endif
-#if !defined __MATH_DECLARING_LONG_DOUBLE
+#if !defined __MATH_DECLARING_LONG_DOUBLE || defined __MATH_DECLARING_FLOATN
extern int __MSUF (__kernel_rem_pio2) (_Mdouble_ *, _Mdouble_ *, int,
int, int, const int32_t *);
#endif
diff --git a/sysdeps/ieee754/ldbl-opt/s_sin.c b/sysdeps/ieee754/ldbl-opt/s_sin.c
index 04e60e2..6932ccc 100644
--- a/sysdeps/ieee754/ldbl-opt/s_sin.c
+++ b/sysdeps/ieee754/ldbl-opt/s_sin.c
@@ -4,6 +4,7 @@
#define __DECL_SIMD_sincos_disable
#define __DECL_SIMD_sincos_disablef
#define __DECL_SIMD_sincos_disablel
+#define __DECL_SIMD_sincos_disablef128
#include <math_ldbl_opt.h>
#undef NAN
#undef sincos