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/*************************** Fraunhofer IIS FDK Tools **********************
(C) Copyright Fraunhofer IIS (2006)
All Rights Reserved
Please be advised that this software and/or program delivery is
Confidential Information of Fraunhofer and subject to and covered by the
Fraunhofer IIS Software Evaluation Agreement
between Google Inc. and Fraunhofer
effective and in full force since March 1, 2012.
You may use this software and/or program only under the terms and
conditions described in the above mentioned Fraunhofer IIS Software
Evaluation Agreement. Any other and/or further use requires a separate agreement.
$Id$
Author(s):
Description: fixed point intrinsics
This software and/or program is protected by copyright law and international
treaties. Any reproduction or distribution of this software and/or program,
or any portion of it, may result in severe civil and criminal penalties, and
will be prosecuted to the maximum extent possible under law.
******************************************************************************/
#if defined(__arm__) && defined(__GNUC__) /* cppp replaced: elif */
#if defined(__ARM_ARCH_5TE__) || defined(__ARM_ARCH_6__)
#define FUNCTION_cplxMultDiv2_32x16
#define FUNCTION_cplxMultDiv2_32x16X2
//#define FUNCTION_cplxMult_32x16
//#define FUNCTION_cplxMult_32x16X2
#endif
#define FUNCTION_cplxMultDiv2_32x32X2
//#define FUNCTION_cplxMult_32x32X2
#ifdef FUNCTION_cplxMultDiv2_32x16
inline void cplxMultDiv2( FIXP_DBL *c_Re,
FIXP_DBL *c_Im,
const FIXP_DBL a_Re,
const FIXP_DBL a_Im,
const FIXP_SPK wpk )
{
LONG tmp1,tmp2;
const LONG w = wpk.w;
asm("smulwt %0, %3, %4;\n"
"rsb %1,%0,#0;\n"
"smlawb %0, %2, %4, %1;\n"
"smulwt %1, %2, %4;\n"
"smlawb %1, %3, %4, %1;\n"
: "=&r"(tmp1), "=&r"(tmp2)
: "r"(a_Re), "r"(a_Im), "r"(w)
);
*c_Re = tmp1;
*c_Im = tmp2;
}
#endif /* FUNCTION_cplxMultDiv2_32x16 */
#ifdef FUNCTION_cplxMultDiv2_32x16X2
inline void cplxMultDiv2( FIXP_DBL *c_Re,
FIXP_DBL *c_Im,
const FIXP_DBL a_Re,
const FIXP_DBL a_Im,
const FIXP_SGL b_Re,
const FIXP_SGL b_Im)
{
LONG tmp1, tmp2;
asm("smulwb %0, %3, %5;\n" /* %7 = -a_Im * b_Im */
"rsb %1,%0,#0;\n"
"smlawb %0, %2, %4, %1;\n" /* tmp1 = a_Re * b_Re - a_Im * b_Im */
"smulwb %1, %2, %5;\n" /* %7 = a_Re * b_Im */
"smlawb %1, %3, %4, %1;\n" /* tmp2 = a_Im * b_Re + a_Re * b_Im */
: "=&r"(tmp1), "=&r"(tmp2)
: "r"(a_Re), "r"(a_Im), "r"(b_Re), "r"(b_Im)
);
*c_Re = tmp1;
*c_Im = tmp2;
}
#endif /* FUNCTION_cplxMultDiv2_32x16X2 */
#ifdef FUNCTION_cplxMultAddDiv2_32x16X2
inline void cplxMultAddDiv2( FIXP_DBL *c_Re,
FIXP_DBL *c_Im,
const FIXP_DBL a_Re,
const FIXP_DBL a_Im,
const FIXP_SGL b_Re,
const FIXP_SGL b_Im)
{
LONG tmp1, tmp2;
asm("smulwb %0, %3, %5;\n"
"rsb %1,%0,#0;\n"
"smlawb %0, %2, %4, %1;\n"
"smulwb %1, %2, %5;\n"
"smlawb %1, %3, %4, %1;\n"
: "=&r"(tmp1), "=&r"(tmp2)
: "r"(a_Re), "r"(a_Im), "r"(b_Re), "r"(b_Im)
);
*c_Re += tmp1;
*c_Im += tmp2;
}
#endif /* FUNCTION_cplxMultAddDiv2_32x16X2 */
#ifdef FUNCTION_cplxMultDiv2_32x32X2
inline void cplxMultDiv2( FIXP_DBL *c_Re,
FIXP_DBL *c_Im,
const FIXP_DBL a_Re,
const FIXP_DBL a_Im,
const FIXP_DBL b_Re,
const FIXP_DBL b_Im)
{
LONG tmp1, tmp2;
#ifdef __ARM_ARCH_6__
asm(
"smmul %0, %2, %4;\n" /* tmp1 = a_Re * b_Re */
"smmls %0, %3, %5, %0;\n" /* tmp1 -= a_Im * b_Im */
"smmul %1, %2, %5;\n" /* tmp2 = a_Re * b_Im */
"smmla %1, %3, %4, %1;\n" /* tmp2 += a_Im * b_Re */
: "=&r"(tmp1), "=&r"(tmp2)
: "r"(a_Re), "r"(a_Im), "r"(b_Re), "r"(b_Im)
: "r0"
);
#else
LONG discard;
asm(
"smull %2, %0, %7, %6;\n" /* tmp1 = -a_Im * b_Im */
"smlal %2, %0, %3, %5;\n" /* tmp1 += a_Re * b_Re */
"smull %2, %1, %3, %6;\n" /* tmp2 = a_Re * b_Im */
"smlal %2, %1, %4, %5;\n" /* tmp2 += a_Im * b_Re */
: "=&r"(tmp1), "=&r"(tmp2), "=&r"(discard)
: "r"(a_Re), "r"(a_Im), "r"(b_Re), "r"(b_Im), "r"(-a_Im)
);
#endif
*c_Re = tmp1;
*c_Im = tmp2;
}
#endif /* FUNCTION_cplxMultDiv2_32x32X2 */
#endif
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