- 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

1 files changed, 76 insertions, 0 deletions

diff --git a/regress/lib/libc/fpclassify/fpclassify.c b/regress/lib/libc/fpclassify/fpclassify.c
new file mode 100644
index 00000000000..174c04d983f
--- /dev/null
+++ b/regress/lib/libc/fpclassify/fpclassify.c
@@ -0,0 +1,76 @@
+/*	$OpenBSD: fpclassify.c,v 1.1 2008/09/07 20:36:10 martynas Exp $	*/
+/*-
+ * Copyright (c) 2003 Mike Barcroft <mike@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.
+ *
+ * $FreeBSD: src/tools/regression/lib/libc/gen/test-fpclassify.c,v 1.3 2003/03/27 05:32:28 das Exp $
+ */
+
+#include <assert.h>
+#include <float.h>
+#include <math.h>
+#include <stdlib.h>
+
+int
+main(void)
+{
+
+	assert(fpclassify((float)0) == FP_ZERO);
+	assert(fpclassify((float)-0.0) == FP_ZERO);
+	assert(fpclassify((float)1) == FP_NORMAL);
+	assert(fpclassify((float)1000) == FP_NORMAL);
+#ifndef __alpha__
+	assert(fpclassify(0x1.2p-150f) == FP_SUBNORMAL);
+#endif /* !__alpha__ */
+	assert(fpclassify(HUGE_VALF) == FP_INFINITE);
+	assert(fpclassify((float)HUGE_VAL) == FP_INFINITE);
+	assert(fpclassify((float)HUGE_VALL) == FP_INFINITE);
+	assert(fpclassify(NAN) == FP_NAN);
+
+	assert(fpclassify((double)0) == FP_ZERO);
+	assert(fpclassify((double)-0) == FP_ZERO);
+	assert(fpclassify((double)1) == FP_NORMAL);
+	assert(fpclassify((double)1000) == FP_NORMAL);
+#ifndef __alpha__
+	assert(fpclassify(0x1.2p-1075) == FP_SUBNORMAL);
+#endif /* !__alpha__ */
+	assert(fpclassify(HUGE_VAL) == FP_INFINITE);
+	assert(fpclassify((double)HUGE_VALF) == FP_INFINITE);
+	assert(fpclassify((double)HUGE_VALL) == FP_INFINITE);
+	assert(fpclassify((double)NAN) == FP_NAN);
+
+	assert(fpclassify((long double)0) == FP_ZERO);
+	assert(fpclassify((long double)-0.0) == FP_ZERO);
+	assert(fpclassify((long double)1) == FP_NORMAL);
+	assert(fpclassify((long double)1000) == FP_NORMAL);
+#if (LDBL_MANT_DIG > DBL_MANT_DIG)
+	assert(fpclassify(0x1.2p-16383L) == FP_SUBNORMAL);
+#endif /* (LDBL_MANT_DIG > DBL_MANT_DIG) */
+	assert(fpclassify(HUGE_VALL) == FP_INFINITE);
+	assert(fpclassify((long double)HUGE_VALF) == FP_INFINITE);
+	assert(fpclassify((long double)HUGE_VAL) == FP_INFINITE);
+	assert(fpclassify((long double)NAN) == FP_NAN);
+
+	return (0);
+}