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+/* $OpenBSD: ehead.h,v 1.1 2011/07/02 18:11:01 martynas Exp $ */
+
+/*
+ * Copyright (c) 2008 Stephen L. Moshier <steve@moshier.net>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* Include file for extended precision arithmetic programs.
+ */
+
+/* Number of 16 bit words in external x type format */
+#define NE 10
+
+/* Number of 16 bit words in internal format */
+#define NI (NE+3)
+
+/* Array offset to exponent */
+#define E 1
+
+/* Array offset to high guard word */
+#define M 2
+
+/* Number of bits of precision */
+#define NBITS ((NI-4)*16)
+
+/* Maximum number of decimal digits in ASCII conversion
+ * = NBITS*log10(2)
+ */
+#define NDEC (NBITS*8/27)
+
+/* The exponent of 1.0 */
+#define EXONE (0x3fff)
+
+void eadd(), esub(), emul(), ediv();
+int ecmp(), enormlz(), eshift();
+void eshup1(), eshup8(), eshup6(), eshdn1(), eshdn8(), eshdn6();
+void eabs(), eneg(), emov(), eclear(), einfin(), efloor();
+void eldexp(), efrexp(), eifrac(), ltoe();
+void esqrt(), elog(), eexp(), etanh(), epow();
+void asctoe(), asctoe24(), asctoe53(), asctoe64();
+void etoasc(), e24toasc(), e53toasc(), e64toasc();
+void etoe64(), etoe53(), etoe24(), e64toe(), e53toe(), e24toe();
+int mtherr();
+extern unsigned short ezero[], ehalf[], eone[], etwo[];
+extern unsigned short elog2[], esqrt2[];
+
+
+/* by Stephen L. Moshier. */