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Add sincosl() function to bionic. So that sincos optimization can - DO NOT MERGE

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be enabled.

Change-Id: I672cb319689aa4fb3f1f7cd868dda76842bebae9
This commit is contained in:
David 'Digit' Turner 2010-06-09 14:35:29 -07:00
parent 506b13d910
commit 410b2ae7fb
3 changed files with 55 additions and 0 deletions
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2
libc/docs/CHANGES.TXT
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@ -8,6 +8,8 @@ Differences between current and Android 2.2:
- <semaphore.h>: Use private futexes for semaphore implementation,
unless your set 'pshared' to non-0 when calling sem_init().
- <math.h>: Added sincos(), sincosf() and sincosl() (GLibc compatibility).
- <sys/sysinfo.h>: Added missing sysinfo() system call implementation
(the function was already declared in the header though).

7
libm/include/math.h
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@ -480,6 +480,13 @@ long double tgammal(long double);
#endif
long double truncl(long double);
/* BIONIC: GLibc compatibility - required by the ARM toolchain */
#ifdef _GNU_SOURCE
void sincos(double x, double *sin, double *cos);
void sincosf(float x, float *sin, float *cos);
void sincosl(long double x, long double *sin, long double *cos);
#endif
/* #endif */ /* __ISO_C_VISIBLE >= 1999 */
__END_DECLS

46
libm/sincos.c Normal file
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@ -0,0 +1,46 @@
/*-
* Copyright (c) 2010 The Android Open Source Project
* 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.
*
*/
#define _GNU_SOURCE 1
#include <math.h>
void sincos(double x, double *psin, double *pcos)
{
*psin = sin(x);
*pcos = cos(x);
}
void sincosf(float x, float *psin, float *pcos)
{
*psin = sinf(x);
*pcos = cosf(x);
}
void sincosl(long double x, long double *psin, long double *pcos)
{
*psin = sin(x);
*pcos = cos(x);
}