mirror of
https://github.com/freebsd/freebsd-src
synced 2024-07-22 02:37:15 +00:00
Implement cproj{,f,l}().
This commit is contained in:
David Schultz
parent
419859bd08
commit
5e9470f1d5
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=181377
|
|
@ -56,6 +56,10 @@ double complex conj(double complex) __pure2;
|
|||
float complex conjf(float complex) __pure2;
|
||||
long double complex
|
||||
conjl(long double complex) __pure2;
|
||||
float complex cprojf(float complex) __pure2;
|
||||
double complex cproj(double complex) __pure2;
|
||||
long double complex
|
||||
cprojl(long double complex) __pure2;
|
||||
double creal(double complex) __pure2;
|
||||
float crealf(float complex) __pure2;
|
||||
long double creall(long double complex) __pure2;
|
||||
|
|
|
|||
|
|
@ -87,7 +87,8 @@ COMMON_SRCS+= s_copysignl.c s_fabsl.c s_llrintl.c s_lrintl.c s_modfl.c
|
|||
COMMON_SRCS+= e_acosl.c e_asinl.c e_atan2l.c e_fmodl.c \
|
||||
e_hypotl.c e_remainderl.c e_sqrtl.c \
|
||||
invtrig.c k_cosl.c k_sinl.c k_tanl.c \
|
||||
s_atanl.c s_ceill.c s_cosl.c s_csqrtl.c s_exp2l.c s_floorl.c s_fmal.c \
|
||||
s_atanl.c s_ceill.c s_cosl.c s_cprojl.c s_csqrtl.c s_exp2l.c \
|
||||
s_floorl.c s_fmal.c \
|
||||
s_frexpl.c s_logbl.c s_nanl.c s_nextafterl.c s_nexttoward.c \
|
||||
s_remquol.c s_rintl.c s_scalbnl.c \
|
||||
s_sinl.c s_tanl.c s_truncl.c w_cabsl.c
|
||||
|
|
@ -95,7 +96,7 @@ COMMON_SRCS+= e_acosl.c e_asinl.c e_atan2l.c e_fmodl.c \
|
|||
|
||||
# C99 complex functions
|
||||
COMMON_SRCS+= s_cimag.c s_cimagf.c s_cimagl.c s_conj.c s_conjf.c s_conjl.c \
|
||||
s_creal.c s_crealf.c s_creall.c
|
||||
s_cproj.c s_cprojf.c s_creal.c s_crealf.c s_creall.c
|
||||
|
||||
# FreeBSD's C library supplies these functions:
|
||||
#COMMON_SRCS+= s_fabs.c s_frexp.c s_isnan.c s_ldexp.c s_modf.c
|
||||
|
|
@ -131,6 +132,7 @@ MLINKS+=atan2.3 atan2f.3 atan2.3 atan2l.3 \
|
|||
MLINKS+=ceil.3 ceilf.3 ceil.3 ceill.3
|
||||
MLINKS+=cimag.3 cimagf.3 cimag.3 cimagl.3 \
|
||||
cimag.3 conj.3 cimag.3 conjf.3 cimag.3 conjl.3 \
|
||||
cimag.3 cproj.3 cimag.3 cprojf.3 cimag.3 cprojl.3 \
|
||||
cimag.3 creal.3 cimag.3 crealf.3 cimag.3 creall.3
|
||||
MLINKS+=copysign.3 copysignf.3 copysign.3 copysignl.3
|
||||
MLINKS+=cos.3 cosf.3 cos.3 cosl.3
|
||||
|
|
|
|||
|
|
@ -214,4 +214,7 @@ FBSD_1.1 {
|
|||
atan2l;
|
||||
atanl;
|
||||
cargl;
|
||||
cproj;
|
||||
cprojf;
|
||||
cprojl;
|
||||
};
|
||||
|
|
|
|||
|
|
@ -24,12 +24,13 @@
|
|||
.\"
|
||||
.\" $FreeBSD$
|
||||
.\"
|
||||
.Dd August 7, 2004
|
||||
.Dd August 7, 2008
|
||||
.Dt CIMAG 3
|
||||
.Os
|
||||
.Sh NAME
|
||||
.Nm cimag , cimagf , cimagl ,
|
||||
.Nm conj , conjf , conjl ,
|
||||
.Nm cproj , cprojf , cprojl ,
|
||||
.Nm creal , crealf , creall
|
||||
.Nd "functions to manipulate complex numbers"
|
||||
.Sh LIBRARY
|
||||
|
|
@ -48,6 +49,12 @@
|
|||
.Fn conjf "float complex z"
|
||||
.Ft "long double complex"
|
||||
.Fn conjl "long double complex z"
|
||||
.Ft "double complex"
|
||||
.Fn cproj "double complex z"
|
||||
.Ft "float complex"
|
||||
.Fn cprojf "float complex z"
|
||||
.Ft "long double complex"
|
||||
.Fn cprojl "long double complex z"
|
||||
.Ft double
|
||||
.Fn creal "double complex z"
|
||||
.Ft float
|
||||
|
|
@ -63,6 +70,10 @@ denote the complex number
|
|||
.Fa z .
|
||||
.Pp
|
||||
The
|
||||
.Fn creal
|
||||
functions return the real part
|
||||
.Fa a ,
|
||||
and the
|
||||
.Fn cimag
|
||||
functions return the imaginary part
|
||||
.Fa b .
|
||||
|
|
@ -75,13 +86,23 @@ functions return the complex conjugate
|
|||
.Sm on
|
||||
.Pp
|
||||
The
|
||||
.Fn creal
|
||||
functions return the real part
|
||||
.Fa a .
|
||||
.Fn cproj
|
||||
functions return the projection onto the Riemann sphere.
|
||||
If
|
||||
.Fa z
|
||||
contains an infinite component, then the result is
|
||||
.Fa \*(If \*(Pm 0 Ns * Ns Em i ,
|
||||
where the (zero) imaginary part of the result has the same sign as
|
||||
.Fa b .
|
||||
Otherwise, the result is
|
||||
.Fa z .
|
||||
.Pp
|
||||
These functions do not signal any floating point exceptions.
|
||||
.Sh STANDARDS
|
||||
The
|
||||
.Fn cimag ,
|
||||
.Fn conj
|
||||
.Fn conj ,
|
||||
.Fn cproj ,
|
||||
and
|
||||
.Fn creal
|
||||
functions conform to
|
||||
|
|
@ -94,3 +115,7 @@ and
|
|||
.Fn creal
|
||||
functions first appeared in
|
||||
.Fx 5.3 .
|
||||
The
|
||||
.Fn cproj
|
||||
functions appeared in
|
||||
.Fx 8.0.
|
||||
|
|
|
|||
47
lib/msun/src/s_cproj.c
Normal file
47
lib/msun/src/s_cproj.c
Normal file
|
|
@ -0,0 +1,47 @@
|
|||
/*-
|
||||
* Copyright (c) 2008 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.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__FBSDID("$FreeBSD$");
|
||||
|
||||
#include <complex.h>
|
||||
#include <math.h>
|
||||
|
||||
#include "math_private.h"
|
||||
|
||||
double complex
|
||||
cproj(double complex z)
|
||||
{
|
||||
|
||||
if (!isinf(creal(z)) && !isinf(cimag(z)))
|
||||
return (z);
|
||||
else
|
||||
return (cpack(INFINITY, copysign(0.0, cimag(z))));
|
||||
}
|
||||
|
||||
#if LDBL_MANT_DIG == 53
|
||||
__weak_reference(cproj, cprojl);
|
||||
#endif
|
||||
43
lib/msun/src/s_cprojf.c
Normal file
43
lib/msun/src/s_cprojf.c
Normal file
|
|
@ -0,0 +1,43 @@
|
|||
/*-
|
||||
* Copyright (c) 2008 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.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__FBSDID("$FreeBSD$");
|
||||
|
||||
#include <complex.h>
|
||||
#include <math.h>
|
||||
|
||||
#include "math_private.h"
|
||||
|
||||
float complex
|
||||
cprojf(float complex z)
|
||||
{
|
||||
|
||||
if (!isinf(crealf(z)) && !isinf(cimagf(z)))
|
||||
return (z);
|
||||
else
|
||||
return (cpackf(INFINITY, copysignf(0.0, cimagf(z))));
|
||||
}
|
||||
43
lib/msun/src/s_cprojl.c
Normal file
43
lib/msun/src/s_cprojl.c
Normal file
|
|
@ -0,0 +1,43 @@
|
|||
/*-
|
||||
* Copyright (c) 2008 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.
|
||||
*/
|
||||
|
||||
#include <sys/cdefs.h>
|
||||
__FBSDID("$FreeBSD$");
|
||||
|
||||
#include <complex.h>
|
||||
#include <math.h>
|
||||
|
||||
#include "math_private.h"
|
||||
|
||||
long double complex
|
||||
cprojl(long double complex z)
|
||||
{
|
||||
|
||||
if (!isinf(creall(z)) && !isinf(cimagl(z)))
|
||||
return (z);
|
||||
else
|
||||
return (cpackl(INFINITY, copysignl(0.0, cimagl(z))));
|
||||
}
|
||||
Loading…
Reference in a new issue