cpp-d1064d

[cross.git] / i686-linux-gnu-4.7 / usr / include / x86_64-linux-gnu / ieee754.h

diff --git a/i686-linux-gnu-4.7/usr/include/x86_64-linux-gnu/ieee754.h b/i686-linux-gnu-4.7/usr/include/x86_64-linux-gnu/ieee754.h
new file mode 100644 (file)
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--- /dev/null
+++ b/i686-linux-gnu-4.7/usr/include/x86_64-linux-gnu/ieee754.h
@@ -0,0 +1,198 @@
+/* Copyright (C) 1992-2018 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_H
+
+#define _IEEE754_H 1
+#include <features.h>
+
+#include <endian.h>
+
+__BEGIN_DECLS
+
+union ieee754_float
+  {
+    float f;
+
+    /* This is the IEEE 754 single-precision format.  */
+    struct
+      {
+#if    __BYTE_ORDER == __BIG_ENDIAN
+       unsigned int negative:1;
+       unsigned int exponent:8;
+       unsigned int mantissa:23;
+#endif                         /* Big endian.  */
+#if    __BYTE_ORDER == __LITTLE_ENDIAN
+       unsigned int mantissa:23;
+       unsigned int exponent:8;
+       unsigned int negative:1;
+#endif                         /* Little endian.  */
+      } ieee;
+
+    /* This format makes it easier to see if a NaN is a signalling NaN.  */
+    struct
+      {
+#if    __BYTE_ORDER == __BIG_ENDIAN
+       unsigned int negative:1;
+       unsigned int exponent:8;
+       unsigned int quiet_nan:1;
+       unsigned int mantissa:22;
+#endif                         /* Big endian.  */
+#if    __BYTE_ORDER == __LITTLE_ENDIAN
+       unsigned int mantissa:22;
+       unsigned int quiet_nan:1;
+       unsigned int exponent:8;
+       unsigned int negative:1;
+#endif                         /* Little endian.  */
+      } ieee_nan;
+  };
+
+#define IEEE754_FLOAT_BIAS     0x7f /* Added to exponent.  */
+
+
+union ieee754_double
+  {
+    double d;
+
+    /* This is the IEEE 754 double-precision format.  */
+    struct
+      {
+#if    __BYTE_ORDER == __BIG_ENDIAN
+       unsigned int negative:1;
+       unsigned int exponent:11;
+       /* Together these comprise the mantissa.  */
+       unsigned int mantissa0:20;
+       unsigned int mantissa1:32;
+#endif                         /* Big endian.  */
+#if    __BYTE_ORDER == __LITTLE_ENDIAN
+# if   __FLOAT_WORD_ORDER == __BIG_ENDIAN
+       unsigned int mantissa0:20;
+       unsigned int exponent:11;
+       unsigned int negative:1;
+       unsigned int mantissa1:32;
+# else
+       /* Together these comprise the mantissa.  */
+       unsigned int mantissa1:32;
+       unsigned int mantissa0:20;
+       unsigned int exponent:11;
+       unsigned int negative:1;
+# endif
+#endif                         /* Little endian.  */
+      } ieee;
+
+    /* This format makes it easier to see if a NaN is a signalling NaN.  */
+    struct
+      {
+#if    __BYTE_ORDER == __BIG_ENDIAN
+       unsigned int negative:1;
+       unsigned int exponent:11;
+       unsigned int quiet_nan:1;
+       /* Together these comprise the mantissa.  */
+       unsigned int mantissa0:19;
+       unsigned int mantissa1:32;
+#else
+# if   __FLOAT_WORD_ORDER == __BIG_ENDIAN
+       unsigned int mantissa0:19;
+       unsigned int quiet_nan:1;
+       unsigned int exponent:11;
+       unsigned int negative:1;
+       unsigned int mantissa1:32;
+# else
+       /* Together these comprise the mantissa.  */
+       unsigned int mantissa1:32;
+       unsigned int mantissa0:19;
+       unsigned int quiet_nan:1;
+       unsigned int exponent:11;
+       unsigned int negative:1;
+# endif
+#endif
+      } ieee_nan;
+  };
+
+#define IEEE754_DOUBLE_BIAS    0x3ff /* Added to exponent.  */
+
+
+union ieee854_long_double
+  {
+    long double d;
+
+    /* This is the IEEE 854 double-extended-precision format.  */
+    struct
+      {
+#if    __BYTE_ORDER == __BIG_ENDIAN
+       unsigned int negative:1;
+       unsigned int exponent:15;
+       unsigned int empty:16;
+       unsigned int mantissa0:32;
+       unsigned int mantissa1:32;
+#endif
+#if    __BYTE_ORDER == __LITTLE_ENDIAN
+# if   __FLOAT_WORD_ORDER == __BIG_ENDIAN
+       unsigned int exponent:15;
+       unsigned int negative:1;
+       unsigned int empty:16;
+       unsigned int mantissa0:32;
+       unsigned int mantissa1:32;
+# else
+       unsigned int mantissa1:32;
+       unsigned int mantissa0:32;
+       unsigned int exponent:15;
+       unsigned int negative:1;
+       unsigned int empty:16;
+# endif
+#endif
+      } ieee;
+
+    /* This is for NaNs in the IEEE 854 double-extended-precision format.  */
+    struct
+      {
+#if    __BYTE_ORDER == __BIG_ENDIAN
+       unsigned int negative:1;
+       unsigned int exponent:15;
+       unsigned int empty:16;
+       unsigned int one:1;
+       unsigned int quiet_nan:1;
+       unsigned int mantissa0:30;
+       unsigned int mantissa1:32;
+#endif
+#if    __BYTE_ORDER == __LITTLE_ENDIAN
+# if   __FLOAT_WORD_ORDER == __BIG_ENDIAN
+       unsigned int exponent:15;
+       unsigned int negative:1;
+       unsigned int empty:16;
+       unsigned int mantissa0:30;
+       unsigned int quiet_nan:1;
+       unsigned int one:1;
+       unsigned int mantissa1:32;
+# else
+       unsigned int mantissa1:32;
+       unsigned int mantissa0:30;
+       unsigned int quiet_nan:1;
+       unsigned int one:1;
+       unsigned int exponent:15;
+       unsigned int negative:1;
+       unsigned int empty:16;
+# endif
+#endif
+      } ieee_nan;
+  };
+
+#define IEEE854_LONG_DOUBLE_BIAS 0x3fff
+
+__END_DECLS
+
+#endif /* ieee754.h */