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o Implement imaxabs(), imaxdiv(), llabs(), lldiv().

Browse Source 
o Update abs(3), div(3), labs(3), ldiv(3) to reflect standards
  conformance and add additional references.

Reviewed by:	bde, wollman
This commit is contained in:
Mike Barcroft 2001-11-15 02:05:03 +00:00
parent f209c33139
commit 7a4a63270f
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=86368
15 changed files with 465 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
include/inttypes.h
View File

@ -42,8 +42,8 @@ typedef struct {
intmax_t rem; /* Remainder. */
} imaxdiv_t;
intmax_t imaxabs(intmax_t);
imaxdiv_t imaxdiv(intmax_t, intmax_t);
intmax_t imaxabs(intmax_t) __pure2;
imaxdiv_t imaxdiv(intmax_t, intmax_t) __pure2;
/* XXX: The following functions are missing the restrict type qualifier. */
intmax_t strtoimax(const char *, char **, int);

13
include/stdlib.h
View File

@ -68,6 +68,13 @@ typedef struct {
long rem; /* remainder */
} ldiv_t;
#ifdef __LONG_LONG_SUPPORTED
typedef struct {
long long quot;
long long rem;
} lldiv_t;
#endif
#ifndef NULL
#define NULL 0
#endif
@ -118,6 +125,12 @@ int wctomb __P((char *, wchar_t));
int mbtowc __P((wchar_t *, const char *, size_t));
size_t wcstombs __P((char *, const wchar_t *, size_t));
#ifdef __LONG_LONG_SUPPORTED
long long
llabs __P((long long)) __pure2;
lldiv_t lldiv __P((long long, long long)) __pure2;
#endif
#if !defined(_ANSI_SOURCE) && !defined(_POSIX_SOURCE)
extern char *_malloc_options;
extern void (*_malloc_message)__P((char *p1, char *p2, char *p3, char *p4));

10
lib/libc/stdlib/Makefile.inc
View File

@ -5,8 +5,9 @@
.PATH: ${.CURDIR}/../libc/${MACHINE_ARCH}/stdlib ${.CURDIR}/../libc/stdlib
MISRCS+=abort.c abs.c atexit.c atof.c atoi.c atol.c bsearch.c calloc.c div.c \
exit.c getenv.c getopt.c getsubopt.c hcreate.c heapsort.c labs.c \
ldiv.c malloc.c merge.c putenv.c qsort.c radixsort.c rand.c random.c \
exit.c getenv.c getopt.c getsubopt.c hcreate.c heapsort.c \
imaxabs.c imaxdiv.c labs.c ldiv.c llabs.c lldiv.c \
malloc.c merge.c putenv.c qsort.c radixsort.c rand.c random.c \
reallocf.c realpath.c setenv.c strfmon.c strhash.c strtol.c \
strtoll.c strtoq.c strtoul.c strtoull.c strtouq.c system.c \
tdelete.c tfind.c tsearch.c twalk.c
@ -27,8 +28,9 @@ SRCS+= strtod.c
.if ${LIB} == "c"
MAN+= abort.3 abs.3 alloca.3 atexit.3 atof.3 atoi.3 atol.3 bsearch.3 \
div.3 exit.3 getenv.3 getopt.3 getsubopt.3 hcreate.3 labs.3 \
ldiv.3 malloc.3 memory.3 qsort.3 radixsort.3 rand.3 random.3 \
div.3 exit.3 getenv.3 getopt.3 getsubopt.3 hcreate.3 \
imaxabs.3 imaxdiv.3 labs.3 ldiv.3 llabs.3 lldiv.3 \
malloc.3 memory.3 qsort.3 radixsort.3 rand.3 random.3 \
realpath.3 strfmon.3 strtod.3 strtol.3 strtoul.3 system.3 tsearch.3
MLINKS+=getenv.3 putenv.3 getenv.3 setenv.3 getenv.3 unsetenv.3

6
lib/libc/stdlib/abs.3
View File

@ -36,7 +36,7 @@
.\" @(#)abs.3 8.1 (Berkeley) 6/4/93
.\" $FreeBSD$
.\"
.Dd June 4, 1993
.Dd November 14, 2001
.Dt ABS 3
.Os
.Sh NAME
@ -66,12 +66,14 @@ the absolute value.
.Xr fabs 3 ,
.Xr floor 3 ,
.Xr hypot 3 ,
.Xr imaxabs 3 ,
.Xr labs 3 ,
.Xr llabs 3 ,
.Xr math 3
.Sh STANDARDS
The
.Fn abs
function conforms to
.St -isoC .
.St -isoC-99 .
.Sh BUGS
The absolute value of the most negative integer remains negative.

8
lib/libc/stdlib/div.3
View File

@ -34,7 +34,7 @@
.\" @(#)div.3 8.1 (Berkeley) 6/4/93
.\" $FreeBSD$
.\"
.Dd June 4, 1993
.Dd November 14, 2001
.Dt DIV 3
.Os
.Sh NAME
@ -61,10 +61,12 @@ members named
and
.Fa rem .
.Sh SEE ALSO
.Xr ldiv 3
.Xr imaxdiv 3 ,
.Xr ldiv 3 ,
.Xr lldiv 3
.Sh STANDARDS
The
.Fn div
function
conforms to
.St -isoC .
.St -isoC-99 .

62
lib/libc/stdlib/imaxabs.3 Normal file
View File

@ -0,0 +1,62 @@
.\" Copyright (c) 2001 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 November 14, 2001
.Dt IMAXABS 3
.Os
.Sh NAME
.Nm imaxabs
.Nd returns absolute value
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In inttypes.h
.Ft "intmax_t"
.Fn imaxabs "intmax_t j"
.Sh DESCRIPTION
The
.Fn imaxabs
function returns the absolute value of
.Fa j .
.Sh SEE ALSO
.Xr abs 3 ,
.Xr fabs 3 ,
.Xr hypot 3 ,
.Xr labs 3 ,
.Xr llabs 3 ,
.Xr math 3
.Sh STANDARDS
The
.Fm imaxabs
function conforms to
.St -isoC-99 .
.Sh HISTORY
The
.Fn imaxabs
function first appeared in
.Fx 5.0 .
.Sh BUGS
The absolute value of the most negative integer remains negative.

36
lib/libc/stdlib/imaxabs.c Normal file
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@ -0,0 +1,36 @@
/*-
* Copyright (c) 2001 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <inttypes.h>
intmax_t
imaxabs(intmax_t j)
{
return (j < 0 ? -j : j);
}

71
lib/libc/stdlib/imaxdiv.3 Normal file
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@ -0,0 +1,71 @@
.\" Copyright (c) 2001 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 November 14, 2001
.Dt IMAXDIV 3
.Os
.Sh NAME
.Nm imaxdiv
.Nd returns quotient and remainder
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In inttypes.h
.Ft "imaxdiv_t"
.Fn imaxabs "intmax_t numer" "intmax_t denom"
.Sh DESCRIPTION
The
.Fn imaxdiv
function computes the value of
.Fa numer
divided by
.Fa denom
and returns the stored result in the form of the imaxdiv_t type.
.Pp
The imaxdiv_t type is defined as:
.Pp
.Bd -literal -offset indent -compact
typedef struct {
intmax_t quot; /* Quotient. */
intmax_t rem; /* Remainder. */
} imaxdiv_t;
.Ed
.Pp
.Sh SEE ALSO
.Xr div 3 ,
.Xr ldiv 3 ,
.Xr lldiv 3 ,
.Xr math 3
.Sh STANDARDS
The
.Fn imaxdiv
function conforms to
.St -isoC-99 .
.Sh HISTORY
The
.Fn imaxdiv
function first appeared in
.Fx 5.0 .

45
lib/libc/stdlib/imaxdiv.c Normal file
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@ -0,0 +1,45 @@
/*-
* Copyright (c) 2001 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <inttypes.h>
/* See comments in div.c for implementation details. */
imaxdiv_t
imaxdiv(intmax_t numer, intmax_t denom)
{
imaxdiv_t retval;
retval.quot = numer / denom;
retval.rem = numer % denom;
if (numer >= 0 && retval.rem < 0) {
retval.quot++;
retval.rem -= denom;
}
return (retval);
}

4
lib/libc/stdlib/labs.3
View File

@ -36,7 +36,7 @@
.\" @(#)labs.3 8.1 (Berkeley) 6/4/93
.\" $FreeBSD$
.\"
.Dd June 4, 1993
.Dd November 14, 2001
.Dt LABS 3
.Os
.Sh NAME
@ -58,6 +58,8 @@ returns the absolute value of the long integer
.Xr abs 3 ,
.Xr cabs 3 ,
.Xr floor 3 ,
.Xr imaxabs 3 ,
.Xr llabs 3 ,
.Xr math 3
.Sh STANDARDS
The

6
lib/libc/stdlib/ldiv.3
View File

@ -36,7 +36,7 @@
.\" @(#)ldiv.3 8.1 (Berkeley) 6/4/93
.\" $FreeBSD$
.\"
.Dd June 4, 1993
.Dd November 14, 2001
.Dt LDIV 3
.Os
.Sh NAME
@ -64,10 +64,12 @@ and
.Ar rem .
.Sh SEE ALSO
.Xr div 3 ,
.Xr imaxdiv 3 ,
.Xr lldiv 3 ,
.Xr math 3
.Sh STANDARDS
The
.Fn ldiv
function
conforms to
.St -isoC .
.St -isoC-99 .

62
lib/libc/stdlib/llabs.3 Normal file
View File

@ -0,0 +1,62 @@
.\" Copyright (c) 2001 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 November 14, 2001
.Dt LLABS 3
.Os
.Sh NAME
.Nm llabs
.Nd returns absolute value
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In stdlib.h
.Ft "long long"
.Fn llabs "long long j"
.Sh DESCRIPTION
The
.Fn llabs
function returns the absolute value of
.Fa j .
.Sh SEE ALSO
.Xr abs 3 ,
.Xr fabs 3 ,
.Xr hypot 3 ,
.Xr imaxabs 3 ,
.Xr labs 3 ,
.Xr math 3
.Sh STANDARDS
The
.Fm llabs
function conforms to
.St -isoC-99 .
.Sh HISTORY
The
.Fn llabs
function first appeared in
.Fx 5.0 .
.Sh BUGS
The absolute value of the most negative integer remains negative.

36
lib/libc/stdlib/llabs.c Normal file
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@ -0,0 +1,36 @@
/*-
* Copyright (c) 2001 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <stdlib.h>
long long
llabs(long long j)
{
return (j < 0 ? -j : j);
}

71
lib/libc/stdlib/lldiv.3 Normal file
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@ -0,0 +1,71 @@
.\" Copyright (c) 2001 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 November 14, 2001
.Dt LLDIV 3
.Os
.Sh NAME
.Nm lldiv
.Nd returns quotient and remainder
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In stdlib.h
.Ft "lldiv_t"
.Fn llabs "long long numer" "long long denom"
.Sh DESCRIPTION
The
.Fn lldiv
function computes the value of
.Fa numer
divided by
.Fa denom
and returns the stored result in the form of the lldiv_t type.
.Pp
The lldiv_t type is defined as:
.Pp
.Bd -literal -offset indent -compact
typedef struct {
long long quot; /* Quotient. */
long long rem; /* Remainder. */
} lldiv_t;
.Ed
.Pp
.Sh SEE ALSO
.Xr div 3 ,
.Xr imaxdiv 3 ,
.Xr ldiv 3 ,
.Xr math 3
.Sh STANDARDS
The
.Fn lldiv
function conforms to
.St -isoC-99 .
.Sh HISTORY
The
.Fn lldiv
function first appeared in
.Fx 5.0 .

45
lib/libc/stdlib/lldiv.c Normal file
View File

@ -0,0 +1,45 @@
/*-
* Copyright (c) 2001 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <stdlib.h>
/* See comments in div.c for implementation details. */
lldiv_t
lldiv(long long numer, long long denom)
{
lldiv_t retval;
retval.quot = numer / denom;
retval.rem = numer % denom;
if (numer >= 0 && retval.rem < 0) {
retval.quot++;
retval.rem -= denom;
}
return (retval);
}