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authorDave Burke <daveburke@google.com>2012-04-17 09:51:45 -0700
committerDave Burke <daveburke@google.com>2012-04-17 23:04:43 -0700
commit9bf37cc9712506b2483650c82d3c41152337ef7e (patch)
tree77db44e2bae06e3d144b255628be2b7a55c581d3 /libFDK/include/arm/cplx_mul.h
parenta37315fe10ee143d6d0b28c19d41a476a23e63ea (diff)
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License boilerplate update to follow. Change-Id: I2810460c11a58b6d148d84673cc031f3685e79b5
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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
+