Initial import of David Gay's gdtoa library for conversion between

strings and floating point.

1 files changed, 66 insertions, 0 deletions

diff --git a/contrib/gdtoa/strtoId.c b/contrib/gdtoa/strtoId.c
new file mode 100644
index 0000000..f986e04
--- /dev/null
+++ b/contrib/gdtoa/strtoId.c
@@ -0,0 +1,66 @@
+/****************************************************************
+
+The author of this software is David M. Gay.
+
+Copyright (C) 1998 by Lucent Technologies
+All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and
+its documentation for any purpose and without fee is hereby
+granted, provided that the above copyright notice appear in all
+copies and that both that the copyright notice and this
+permission notice and warranty disclaimer appear in supporting
+documentation, and that the name of Lucent or any of its entities
+not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior
+permission.
+
+LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
+IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY
+SPECIAL, 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.
+
+****************************************************************/
+
+/* Please send bug reports to
+	David M. Gay
+	Bell Laboratories, Room 2C-463
+	600 Mountain Avenue
+	Murray Hill, NJ 07974-0636
+	U.S.A.
+	dmg@bell-labs.com
+ */
+
+#include "gdtoaimp.h"
+
+ int
+#ifdef KR_headers
+strtoId(s, sp, f0, f1) CONST char *s; char **sp; double *f0, *f1;
+#else
+strtoId(CONST char *s, char **sp, double *f0, double *f1)
+#endif
+{
+	static FPI fpi = { 53, 1-1023-53+1, 2046-1023-53+1, 1, SI };
+	Long exp[2];
+	Bigint *B[2];
+	int k, rv[2];
+
+	B[0] = Balloc(1);
+	B[0]->wds = 2;
+	k = strtoIg(s, sp, &fpi, exp, B, rv);
+	ULtod((ULong*)f0, B[0]->x, exp[0], rv[0]);
+	Bfree(B[0]);
+	if (B[1]) {
+		ULtod((ULong*)f1, B[1]->x, exp[1], rv[1]);
+		Bfree(B[1]);
+		}
+	else {
+		((ULong*)f1)[0] = ((ULong*)f0)[0];
+		((ULong*)f1)[1] = ((ULong*)f0)[1];
+		}
+	return k;
+	}