- replace dtoa w/ David's gdtoa, version 2008-03-15

- provide proper dtoa locks
- use the real strtof implementation
- add strtold, __hdtoa, __hldtoa
- add %a/%A support
- don't lose precision in printf, don't round to double anymore
- implement extended-precision versions of libc functions: fpclassify,
isnan, isinf, signbit, isnormal, isfinite, now that the ieee.h is
fixed
- separate vax versions of strtof, and __hdtoa
- add complex math support.  added functions: cacos, casin, catan,
ccos, csin, ctan, cacosh, casinh, catanh, ccosh, csinh, ctanh, cexp,
clog, cabs, cpow, csqrt, carg, cimag, conj, cproj, creal, cacosf,
casinf, catanf, ccosf, csinf, ctanf, cacoshf, casinhf, catanhf,
ccoshf, csinhf, ctanhf, cexpf, clogf, cabsf, cpowf, csqrtf, cargf,
cimagf, conjf, cprojf, crealf
- add fdim, fmax, fmin
- add log2. (adapted implementation e_log.c.  could be more acruate
& faster, but it's good enough for now)
- remove wrappers & cruft in libm, supposed to work-around mistakes
in SVID, etc.;  use ieee versions.  fixes issues in python 2.6 for
djm@
- make _digittoint static
- proper definitions for i386, and amd64 in ieee.h
- sh, powerpc don't really have extended-precision
- add missing definitions for mips64 (quad), m{6,8}k (96-bit) float.h
for LDBL_*
- merge lead to frac for m{6,8}k, for gdtoa to work properly
- add FRAC*BITS & EXT_TO_ARRAY32 definitions in ieee.h, for hdtoa&ldtoa
to use
- add EXT_IMPLICIT_NBIT definition, which indicates implicit
normalization bit
- add regression tests for libc: fpclassify and printf
- arith.h & gd_qnan.h definitions
- update ieee.h: hppa doesn't have quad-precision, hppa64 does
- add missing prototypes to gdtoaimp
- on 64-bit platforms make sure gdtoa doesn't use a long when it
really wants an int
- etc., what i may have forgotten...
- bump libm major, due to removed&changed symbols
- no libc bump, since this is riding on djm's libc major crank from
a day ago

discussed with / requested by / testing theo, sthen@, djm@, jsg@,
merdely@, jsing@, tedu@, brad@, jakemsr@, and others.
looks good to millert@
parts of the diff ok kettenis@

this commit does not include:
- man page changes

4 files changed, 62 insertions, 0 deletions

diff --git a/lib/libc/arch/m68k/gdtoa/Makefile.inc b/lib/libc/arch/m68k/gdtoa/Makefile.inc
new file mode 100644
index 00000000000..9b47fc51d00
--- /dev/null
+++ b/lib/libc/arch/m68k/gdtoa/Makefile.inc
@@ -0,0 +1,3 @@
+#	$OpenBSD: Makefile.inc,v 1.1 2008/09/07 20:36:07 martynas Exp $
+
+SRCS+= strtord.c strtorx.c
diff --git a/lib/libc/arch/m68k/gdtoa/arith.h b/lib/libc/arch/m68k/gdtoa/arith.h
new file mode 100644
index 00000000000..d16e11448ef
--- /dev/null
+++ b/lib/libc/arch/m68k/gdtoa/arith.h
@@ -0,0 +1,2 @@
+#define IEEE_MC68k
+#define Arith_Kind_ASL 2
diff --git a/lib/libc/arch/m68k/gdtoa/gd_qnan.h b/lib/libc/arch/m68k/gdtoa/gd_qnan.h
new file mode 100644
index 00000000000..a660b1f623b
--- /dev/null
+++ b/lib/libc/arch/m68k/gdtoa/gd_qnan.h
@@ -0,0 +1,12 @@
+#define f_QNAN 0x7fffffff
+#define d_QNAN0 0x7fffffff
+#define d_QNAN1 0xffffffff
+#define ld_QNAN0 0x7fff0000
+#define ld_QNAN1 0xffffffff
+#define ld_QNAN2 0xffffffff
+#define ld_QNAN3 0x0
+#define ldus_QNAN0 0x7fff
+#define ldus_QNAN1 0x0
+#define ldus_QNAN2 0xffff
+#define ldus_QNAN3 0xffff
+#define ldus_QNAN4 0xffff
diff --git a/lib/libc/arch/m68k/gdtoa/strtold.c b/lib/libc/arch/m68k/gdtoa/strtold.c
new file mode 100644
index 00000000000..20b50655348
--- /dev/null
+++ b/lib/libc/arch/m68k/gdtoa/strtold.c
@@ -0,0 +1,45 @@
+/*	$OpenBSD: strtold.c,v 1.1 2008/09/07 20:36:07 martynas Exp $	*/
+/*-
+ * Copyright (c) 2003 David Schultz <das@FreeBSD.ORG>
+ * All rights reserved.
+ *
+ * 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.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ */
+
+/*
+ * Machine-dependent glue to integrate David Gay's gdtoa
+ * package into libc for architectures where a long double
+ * is an IEEE extended precision number.
+ */
+
+#include <float.h>
+
+#include "gdtoaimp.h"
+
+long double
+strtold(const char * __restrict s, char ** __restrict sp)
+{
+	long double result;
+
+	strtorx(s, sp, FLT_ROUNDS, &result);
+	return result;
+}