diff options
author | mike <mike@FreeBSD.org> | 2003-02-08 20:37:55 +0000 |
---|---|---|
committer | mike <mike@FreeBSD.org> | 2003-02-08 20:37:55 +0000 |
commit | b4e3f2f94a505c800e895764e429ec9ec310d9b4 (patch) | |
tree | 5fa8c1927e480809720c766a3f48569e33c80af9 /lib | |
parent | 9c57bdd382a4547a47c07bb50cb31b20e614f0c9 (diff) | |
download | FreeBSD-src-b4e3f2f94a505c800e895764e429ec9ec310d9b4.zip FreeBSD-src-b4e3f2f94a505c800e895764e429ec9ec310d9b4.tar.gz |
Implement fpclassify():
o Add a MD header private to libc called _fpmath.h; this header
contains bitfield layouts of MD floating-point types.
o Add a MI header private to libc called fpmath.h; this header
contains bitfield layouts of MI floating-point types.
o Add private libc variables to lib/libc/$arch/gen/infinity.c for
storing NaN values.
o Add __double_t and __float_t to <machine/_types.h>, and provide
double_t and float_t typedefs in <math.h>.
o Add some C99 manifest constants (FP_ILOGB0, FP_ILOGBNAN, HUGE_VALF,
HUGE_VALL, INFINITY, NAN, and return values for fpclassify()) to
<math.h> and others (FLT_EVAL_METHOD, DECIMAL_DIG) to <float.h> via
<machine/float.h>.
o Add C99 macro fpclassify() which calls __fpclassify{d,f,l}() based
on the size of its argument. __fpclassifyl() is never called on
alpha because (sizeof(long double) == sizeof(double)), which is good
since __fpclassifyl() can't deal with such a small `long double'.
This was developed by David Schultz and myself with input from bde and
fenner.
PR: 23103
Submitted by: David Schultz <dschultz@uclink.Berkeley.EDU>
(significant portions)
Reviewed by: bde, fenner (earlier versions)
Diffstat (limited to 'lib')
-rw-r--r-- | lib/libc/Makefile | 2 | ||||
-rw-r--r-- | lib/libc/alpha/_fpmath.h | 39 | ||||
-rw-r--r-- | lib/libc/alpha/gen/infinity.c | 3 | ||||
-rw-r--r-- | lib/libc/amd64/_fpmath.h | 40 | ||||
-rw-r--r-- | lib/libc/amd64/gen/infinity.c | 3 | ||||
-rw-r--r-- | lib/libc/gen/Makefile.inc | 5 | ||||
-rw-r--r-- | lib/libc/gen/fpclassify.3 | 81 | ||||
-rw-r--r-- | lib/libc/gen/fpclassify.c | 93 | ||||
-rw-r--r-- | lib/libc/i386/_fpmath.h | 40 | ||||
-rw-r--r-- | lib/libc/i386/gen/infinity.c | 3 | ||||
-rw-r--r-- | lib/libc/ia64/_fpmath.h | 40 | ||||
-rw-r--r-- | lib/libc/ia64/gen/infinity.c | 3 | ||||
-rw-r--r-- | lib/libc/include/fpmath.h | 63 | ||||
-rw-r--r-- | lib/libc/powerpc/_fpmath.h | 40 | ||||
-rw-r--r-- | lib/libc/powerpc/gen/infinity.c | 3 | ||||
-rw-r--r-- | lib/libc/sparc64/_fpmath.h | 40 | ||||
-rw-r--r-- | lib/libc/sparc64/gen/infinity.c | 3 | ||||
-rw-r--r-- | lib/msun/src/math.h | 32 |
18 files changed, 530 insertions, 3 deletions
diff --git a/lib/libc/Makefile b/lib/libc/Makefile index c2fe829..ae10f73 100644 --- a/lib/libc/Makefile +++ b/lib/libc/Makefile @@ -10,8 +10,8 @@ # system call stubs. LIB=c SHLIB_MAJOR= 5 -CFLAGS+=-I${.CURDIR}/include -I${.CURDIR}/../../include AINC= -I${.CURDIR}/${MACHINE_ARCH} +CFLAGS+=-I${.CURDIR}/include -I${.CURDIR}/../../include ${AINC} CLEANFILES+=tags INSTALL_PIC_ARCHIVE= yes PRECIOUSLIB= yes diff --git a/lib/libc/alpha/_fpmath.h b/lib/libc/alpha/_fpmath.h new file mode 100644 index 0000000..167f942 --- /dev/null +++ b/lib/libc/alpha/_fpmath.h @@ -0,0 +1,39 @@ +/*- + * Copyright (c) 2002, 2003 David Schultz <dschultz@uclink.Berkeley.EDU> + * 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. + * + * $FreeBSD$ + */ + +union IEEEl2bits { + long double e; + struct { + unsigned int manl :32; + unsigned int manh :20; + unsigned int exp :11; + unsigned int sign :1; + } bits; +}; + +#define mask_nbit_l(u) ((void)0) diff --git a/lib/libc/alpha/gen/infinity.c b/lib/libc/alpha/gen/infinity.c index 15b1293..b10f6d3 100644 --- a/lib/libc/alpha/gen/infinity.c +++ b/lib/libc/alpha/gen/infinity.c @@ -34,3 +34,6 @@ __FBSDID("$FreeBSD$"); /* bytes for +Infinity on an Alpha (IEEE double format) */ const union __infinity_un __infinity = { { 0, 0, 0, 0, 0, 0, 0xf0, 0x7f } }; + +/* bytes for NaN */ +const union __nan_un __nan = { { 0, 0, 0xc0, 0xff } }; diff --git a/lib/libc/amd64/_fpmath.h b/lib/libc/amd64/_fpmath.h new file mode 100644 index 0000000..d78e601 --- /dev/null +++ b/lib/libc/amd64/_fpmath.h @@ -0,0 +1,40 @@ +/*- + * Copyright (c) 2002, 2003 David Schultz <dschultz@uclink.Berkeley.EDU> + * 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. + * + * $FreeBSD$ + */ + +union IEEEl2bits { + long double e; + struct { + unsigned int manl :32; + unsigned int manh :32; + unsigned int exp :15; + unsigned int sign :1; + unsigned int junk :16; + } bits; +}; + +#define mask_nbit_l(u) ((u).bits.manh &= 0x7fffffff) diff --git a/lib/libc/amd64/gen/infinity.c b/lib/libc/amd64/gen/infinity.c index 547927b..464b402 100644 --- a/lib/libc/amd64/gen/infinity.c +++ b/lib/libc/amd64/gen/infinity.c @@ -9,3 +9,6 @@ __FBSDID("$FreeBSD$"); /* bytes for +Infinity on a 387 */ const union __infinity_un __infinity = { { 0, 0, 0, 0, 0, 0, 0xf0, 0x7f } }; + +/* bytes for NaN */ +const union __nan_un __nan = { { 0, 0, 0xc0, 0xff } }; diff --git a/lib/libc/gen/Makefile.inc b/lib/libc/gen/Makefile.inc index 2953554..93be60b 100644 --- a/lib/libc/gen/Makefile.inc +++ b/lib/libc/gen/Makefile.inc @@ -9,7 +9,7 @@ SRCS+= __xuname.c _pthread_stubs.c _rand48.c _spinlock_stub.c _thread_init.c \ clock.c closedir.c confstr.c \ crypt.c ctermid.c daemon.c devname.c dirname.c disklabel.c \ dlfcn.c dlfunc.c drand48.c erand48.c err.c errlst.c errno.c \ - exec.c fmtcheck.c fmtmsg.c fnmatch.c fstab.c ftok.c fts.c \ + exec.c fmtcheck.c fmtmsg.c fnmatch.c fpclassify.c fstab.c ftok.c fts.c \ getbootfile.c getbsize.c \ getcap.c getcwd.c getdomainname.c getgrent.c getgrouplist.c \ gethostname.c getloadavg.c getlogin.c getmntinfo.c getnetgrent.c \ @@ -40,7 +40,8 @@ MAN+= alarm.3 arc4random.3 \ basename.3 check_utility_compat.3 clock.3 \ confstr.3 ctermid.3 daemon.3 \ devname.3 directory.3 dirname.3 dladdr.3 dllockinit.3 dlopen.3 \ - err.3 exec.3 fmtcheck.3 fmtmsg.3 fnmatch.3 frexp.3 ftok.3 fts.3 \ + err.3 exec.3 fmtcheck.3 fmtmsg.3 fnmatch.3 fpclassify.3 frexp.3 \ + ftok.3 fts.3 \ getbootfile.3 getbsize.3 getcap.3 getcontext.3 getcwd.3 \ getdiskbyname.3 getdomainname.3 getfsent.3 \ getgrent.3 getgrouplist.3 gethostname.3 getloadavg.3 \ diff --git a/lib/libc/gen/fpclassify.3 b/lib/libc/gen/fpclassify.3 new file mode 100644 index 0000000..3ed831f --- /dev/null +++ b/lib/libc/gen/fpclassify.3 @@ -0,0 +1,81 @@ +.\" 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. +.\" +.\" $FreeBSD$ +.\" +.Dd February 8, 2003 +.Dt FPCLASSIFY 3 +.Os +.Sh NAME +.Nm fpclassify +.Nd "classify a floating-point number" +.Sh LIBRARY +.Lb libc +.Sh SYNOPSIS +.In math.h +.Ft int +.Fn fpclassify "real-floating x" +.Sh DESCRIPTION +The +.Fn fpclassify +macro takes an argument of +.Va x +and returns one of the following manifest constants. +.Bl -tag -width ".Dv FP_SUBNORMAL" +.It Dv FP_INFINITE +Indicates that +.Va x +is an infinite number. +.It Dv FP_NAN +Indicates that +.Va x +is not a number (NaN). +.It Dv FP_NORMAL +Indicates that +.Va x +is a normalized number. +.It Dv FP_SUBNORMAL +Indicates that +.Va x +is a denormalized number. +.It Dv FP_ZERO +Indicates that +.Va x +is zero (0 or -0). +.El +.Sh SEE ALSO +.Xr math 3 +.Sh STANDARDS +The +.Fn fpclassify +macro conforms to +.St -isoC-99 . +.Sh HISTORY +The +.Fn fpclassify +macro was added in +.Fx 5.1 . +.Sh BUGS +By default, the DEC Alpha architecture does not support IEEE rounding. +See compiler documentation for additional details. diff --git a/lib/libc/gen/fpclassify.c b/lib/libc/gen/fpclassify.c new file mode 100644 index 0000000..26cb910 --- /dev/null +++ b/lib/libc/gen/fpclassify.c @@ -0,0 +1,93 @@ +/*- + * Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org> + * Copyright (c) 2002, 2003 David Schultz <dschultz@uclink.Berkeley.EDU> + * 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. + * + * $FreeBSD$ + */ + +#include <sys/endian.h> + +#include <math.h> +#include <stdint.h> + +#include "fpmath.h" + +int +__fpclassifyf(float f) +{ + union IEEEf2bits u; + + u.f = f; + if (u.bits.exp == 0) { + if (u.bits.man == 0) + return (FP_ZERO); + return (FP_SUBNORMAL); + } + if (u.bits.exp == 255) { + if (u.bits.man == 0) + return (FP_INFINITE); + return (FP_NAN); + } + return (FP_NORMAL); +} + +int +__fpclassifyd(double d) +{ + union IEEEd2bits u; + + u.d = d; + if (u.bits.exp == 0) { + if ((u.bits.manl | u.bits.manh) == 0) + return (FP_ZERO); + return (FP_SUBNORMAL); + } + if (u.bits.exp == 2047) { + if ((u.bits.manl | u.bits.manh) == 0) + return (FP_INFINITE); + return (FP_NAN); + } + return (FP_NORMAL); +} + +int +__fpclassifyl(long double e) +{ + union IEEEl2bits u; + + u.e = e; + if (u.bits.exp == 0) { + if ((u.bits.manl | u.bits.manh) == 0) + return (FP_ZERO); + return (FP_SUBNORMAL); + } + mask_nbit_l(u); /* Mask normalization bit if applicable. */ + if (u.bits.exp == 32767) { + if ((u.bits.manl | u.bits.manh) == 0) + return (FP_INFINITE); + return (FP_NAN); + } + return (FP_NORMAL); +} diff --git a/lib/libc/i386/_fpmath.h b/lib/libc/i386/_fpmath.h new file mode 100644 index 0000000..d78e601 --- /dev/null +++ b/lib/libc/i386/_fpmath.h @@ -0,0 +1,40 @@ +/*- + * Copyright (c) 2002, 2003 David Schultz <dschultz@uclink.Berkeley.EDU> + * 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. + * + * $FreeBSD$ + */ + +union IEEEl2bits { + long double e; + struct { + unsigned int manl :32; + unsigned int manh :32; + unsigned int exp :15; + unsigned int sign :1; + unsigned int junk :16; + } bits; +}; + +#define mask_nbit_l(u) ((u).bits.manh &= 0x7fffffff) diff --git a/lib/libc/i386/gen/infinity.c b/lib/libc/i386/gen/infinity.c index 547927b..464b402 100644 --- a/lib/libc/i386/gen/infinity.c +++ b/lib/libc/i386/gen/infinity.c @@ -9,3 +9,6 @@ __FBSDID("$FreeBSD$"); /* bytes for +Infinity on a 387 */ const union __infinity_un __infinity = { { 0, 0, 0, 0, 0, 0, 0xf0, 0x7f } }; + +/* bytes for NaN */ +const union __nan_un __nan = { { 0, 0, 0xc0, 0xff } }; diff --git a/lib/libc/ia64/_fpmath.h b/lib/libc/ia64/_fpmath.h new file mode 100644 index 0000000..80ea88a --- /dev/null +++ b/lib/libc/ia64/_fpmath.h @@ -0,0 +1,40 @@ +/*- + * Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org> + * Copyright (c) 2002, 2003 David Schultz <dschultz@uclink.Berkeley.EDU> + * 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. + * + * $FreeBSD$ + */ + +union IEEEl2bits { + long double e; + struct { + unsigned long manl :64; + unsigned long manh :48; + unsigned int exp :15; + unsigned int sign :1; + } bits; +}; + +#define mask_nbit_l(u) ((u).bits.manl &= 0x7fffffffffffffff) diff --git a/lib/libc/ia64/gen/infinity.c b/lib/libc/ia64/gen/infinity.c index 681d811..ac7fc38 100644 --- a/lib/libc/ia64/gen/infinity.c +++ b/lib/libc/ia64/gen/infinity.c @@ -34,3 +34,6 @@ __FBSDID("$FreeBSD$"); /* bytes for +Infinity on an ia64 (IEEE double format) */ const union __infinity_un __infinity = { { 0, 0, 0, 0, 0, 0, 0xf0, 0x7f } }; + +/* bytes for NaN */ +const union __nan_un __nan = { { 0, 0, 0xc0, 0xff } }; diff --git a/lib/libc/include/fpmath.h b/lib/libc/include/fpmath.h new file mode 100644 index 0000000..fcfbbcf --- /dev/null +++ b/lib/libc/include/fpmath.h @@ -0,0 +1,63 @@ +/*- + * Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org> + * Copyright (c) 2002 David Schultz <dschultz@uclink.Berkeley.EDU> + * 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. + * + * $FreeBSD$ + */ + +#include <sys/endian.h> +#include "_fpmath.h" + +union IEEEf2bits { + float f; + struct { +#if _BYTE_ORDER == _LITTLE_ENDIAN + unsigned int man :23; + unsigned int exp :8; + unsigned int sign :1; +#else /* _BIG_ENDIAN */ + unsigned int sign :1; + unsigned int exp :8; + unsigned int man :23; +#endif + } bits; +}; + +union IEEEd2bits { + double d; + struct { +#if _BYTE_ORDER == _LITTLE_ENDIAN + unsigned int manl :32; + unsigned int manh :20; + unsigned int exp :11; + unsigned int sign :1; +#else /* _BIG_ENDIAN */ + unsigned int sign :1; + unsigned int exp :11; + unsigned int manh :20; + unsigned int manl :32; +#endif + } bits; +}; diff --git a/lib/libc/powerpc/_fpmath.h b/lib/libc/powerpc/_fpmath.h new file mode 100644 index 0000000..af2e959 --- /dev/null +++ b/lib/libc/powerpc/_fpmath.h @@ -0,0 +1,40 @@ +/*- + * Copyright (c) 2003 David Schultz <dschultz@uclink.Berkeley.EDU> + * 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. + * + * $FreeBSD$ + */ + +union IEEEl2bits { + long double e; + struct { + unsigned int sign :1; + unsigned int exp :15; + unsigned long manh :48; + unsigned long manl :64; + } bits; +}; + +/* XXX does powerpc have a normalization bit? */ +#define mask_nbit_l(u) ((void)0) diff --git a/lib/libc/powerpc/gen/infinity.c b/lib/libc/powerpc/gen/infinity.c index 428f24d..cf1695e 100644 --- a/lib/libc/powerpc/gen/infinity.c +++ b/lib/libc/powerpc/gen/infinity.c @@ -12,3 +12,6 @@ __FBSDID("$FreeBSD$"); /* bytes for +Infinity on powerpc */ const union __infinity_un __infinity = { { 0x7f, 0xf0, 0, 0, 0, 0, 0, 0 } }; + +/* bytes for NaN */ +const union __nan_un __nan = { { 0xff, 0xc0, 0, 0 } }; diff --git a/lib/libc/sparc64/_fpmath.h b/lib/libc/sparc64/_fpmath.h new file mode 100644 index 0000000..e461b75 --- /dev/null +++ b/lib/libc/sparc64/_fpmath.h @@ -0,0 +1,40 @@ +/*- + * Copyright (c) 2003 Mike Barcroft <mike@FreeBSD.org> + * Copyright (c) 2002, 2003 David Schultz <dschultz@uclink.Berkeley.EDU> + * 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. + * + * $FreeBSD$ + */ + +union IEEEl2bits { + long double e; + struct { + unsigned int sign :1; + unsigned int exp :15; + unsigned long manh :48; + unsigned long manl :64; + } bits; +}; + +#define mask_nbit_l(u) ((void)0) diff --git a/lib/libc/sparc64/gen/infinity.c b/lib/libc/sparc64/gen/infinity.c index 4a04c1c..6d0d934 100644 --- a/lib/libc/sparc64/gen/infinity.c +++ b/lib/libc/sparc64/gen/infinity.c @@ -12,3 +12,6 @@ __FBSDID("$FreeBSD$"); /* bytes for +Infinity on a sparc */ const union __infinity_un __infinity = { { 0x7f, 0xf0, 0, 0, 0, 0, 0, 0 } }; + +/* bytes for NaN */ +const union __nan_un __nan = { { 0xff, 0xc0, 0, 0 } }; diff --git a/lib/msun/src/math.h b/lib/msun/src/math.h index 655b182..abeca6e 100644 --- a/lib/msun/src/math.h +++ b/lib/msun/src/math.h @@ -17,6 +17,8 @@ #ifndef _MATH_H_ #define _MATH_H_ +#include <sys/_types.h> + /* * ANSI/POSIX */ @@ -24,7 +26,33 @@ extern const union __infinity_un { unsigned char __uc[8]; double __ud; } __infinity; + +extern const union __nan_un { + unsigned char __uc[sizeof(float)]; + float __uf; +} __nan; + +#define FP_ILOGB0 (-0x7fffffff - 1) /* INT_MIN */ +#define FP_ILOGBNAN 0x7fffffff /* INT_MAX */ #define HUGE_VAL (__infinity.__ud) +#define HUGE_VALF (float)HUGE_VAL +#define HUGE_VALL (long double)HUGE_VAL +#define INFINITY HUGE_VALF +#define NAN (__nan.__uf) + +/* Symbolic constants to classify floating point numbers. */ +#define FP_INFINITE 1 +#define FP_NAN 2 +#define FP_NORMAL 3 +#define FP_SUBNORMAL 4 +#define FP_ZERO 5 +#define fpclassify(x) \ + ((sizeof (x) == sizeof (float)) ? __fpclassifyf(x) \ + : (sizeof (x) == sizeof (double)) ? __fpclassifyd(x) \ + : __fpclassifyl(x)) + +typedef __double_t double_t; +typedef __float_t float_t; /* * XOPEN/SVID @@ -116,6 +144,10 @@ __BEGIN_DECLS /* * ANSI/POSIX */ +int __fpclassifyd(double); +int __fpclassifyf(float); +int __fpclassifyl(long double); + double acos(double); double asin(double); double atan(double); |