Clean up <machine/ieee.h>.
The upstream intention was for this to be architecture-dependent, but it's a
lot clearer if we just have one copy.
Change-Id: I4e8310496145f9f411cd2e847c8cd023b1d758e9
diff --git a/libc/include/machine/ieee.h b/libc/include/machine/ieee.h
new file mode 100644
index 0000000..c579969
--- /dev/null
+++ b/libc/include/machine/ieee.h
@@ -0,0 +1,118 @@
+/* $OpenBSD: ieee.h,v 1.4 2011/11/08 17:06:51 deraadt Exp $ */
+/* $NetBSD: ieee.h,v 1.2 2001/02/21 17:43:50 bjh21 Exp $ */
+
+/*
+ * Copyright (c) 1992, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This software was developed by the Computer Systems Engineering group
+ * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
+ * contributed to Berkeley.
+ *
+ * All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Lawrence Berkeley Laboratory.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)ieee.h 8.1 (Berkeley) 6/11/93
+ */
+
+#ifndef _MACHINE_IEEE_H_
+#define _MACHINE_IEEE_H_
+
+#include <sys/types.h>
+
+__BEGIN_DECLS
+
+#define SNG_EXPBITS 8
+#define SNG_FRACBITS 23
+
+#define SNG_EXP_INFNAN 255
+#define SNG_EXP_BIAS 127
+
+struct ieee_single {
+ unsigned sng_frac:23;
+ unsigned sng_exp:8;
+ unsigned sng_sign:1;
+};
+
+#define DBL_EXPBITS 11
+#define DBL_FRACHBITS 20
+#define DBL_FRACLBITS 32
+#define DBL_FRACBITS 52
+
+#define DBL_EXP_INFNAN 2047
+#define DBL_EXP_BIAS 1023
+
+struct ieee_double {
+ unsigned dbl_fracl;
+ unsigned dbl_frach:20;
+ unsigned dbl_exp:11;
+ unsigned dbl_sign:1;
+};
+
+#if __LP64__
+
+/* 64-bit Android uses ld128 long doubles. */
+
+#define EXT_EXPBITS 15
+#define EXT_FRACHBITS 16
+#define EXT_FRACHMBITS 32
+#define EXT_FRACLMBITS 32
+#define EXT_FRACLBITS 32
+#define EXT_FRACBITS 112
+
+#define EXT_EXP_INFNAN 32767
+#define EXT_EXP_BIAS 16383
+
+#define EXT_IMPLICIT_NBIT
+
+#define EXT_TO_ARRAY32(p, a) do { \
+ (a)[0] = (uint32_t)(p)->ext_fracl; \
+ (a)[1] = (uint32_t)(p)->ext_fraclm; \
+ (a)[2] = (uint32_t)(p)->ext_frachm; \
+ (a)[3] = (uint32_t)(p)->ext_frach; \
+} while(0)
+
+struct ieee_ext {
+ unsigned ext_fracl;
+ unsigned ext_fraclm;
+ unsigned ext_frachm;
+ unsigned ext_frach:16;
+ unsigned ext_exp:15;
+ unsigned ext_sign:1;
+};
+
+#endif
+
+__END_DECLS
+
+#endif /* _MACHINE_IEEE_H_ */