1 /* Copyright (C) 2003 Jean-Marc Valin */ 2 /** 3 @file fixed_c5x.h 4 @brief Fixed-point operations for the TI C5x DSP family 5 */ 6 /* 7 Redistribution and use in source and binary forms, with or without 8 modification, are permitted provided that the following conditions 9 are met: 10 11 - Redistributions of source code must retain the above copyright 12 notice, this list of conditions and the following disclaimer. 13 14 - Redistributions in binary form must reproduce the above copyright 15 notice, this list of conditions and the following disclaimer in the 16 documentation and/or other materials provided with the distribution. 17 18 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 22 OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 23 EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 24 PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 25 PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 26 LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 27 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 28 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef FIXED_C5X_H 32 #define FIXED_C5X_H 33 34 #include "dsplib.h" 35 36 #undef IMUL32 37 static OPUS_INLINE long IMUL32(long i, long j) 38 { 39 long ac0, ac1; 40 ac0 = _lmpy(i>>16,j); 41 ac1 = ac0 + _lmpy(i,j>>16); 42 return _lmpyu(i,j) + (ac1<<16); 43 } 44 45 #undef MAX16 46 #define MAX16(a,b) _max(a,b) 47 48 #undef MIN16 49 #define MIN16(a,b) _min(a,b) 50 51 #undef MAX32 52 #define MAX32(a,b) _lmax(a,b) 53 54 #undef MIN32 55 #define MIN32(a,b) _lmin(a,b) 56 57 #undef VSHR32 58 #define VSHR32(a, shift) _lshl(a,-(shift)) 59 60 #undef MULT16_16_Q15 61 #define MULT16_16_Q15(a,b) (_smpy(a,b)) 62 63 #undef MULT16_16SU 64 #define MULT16_16SU(a,b) _lmpysu(a,b) 65 66 #undef MULT_16_16 67 #define MULT_16_16(a,b) _lmpy(a,b) 68 69 /* FIXME: This is technically incorrect and is bound to cause problems. Is there any cleaner solution? */ 70 #undef MULT16_32_Q15 71 #define MULT16_32_Q15(a,b) ADD32(SHL(MULT16_16((a),SHR((b),16)),1), SHR(MULT16_16SU((a),(b)),15)) 72 73 #define celt_ilog2(x) (30 - _lnorm(x)) 74 #define OVERRIDE_CELT_ILOG2 75 76 #define celt_maxabs16(x, len) MAX32(EXTEND32(maxval((DATA *)x, len)),-EXTEND32(minval((DATA *)x, len))) 77 #define OVERRIDE_CELT_MAXABS16 78 79 #endif /* FIXED_C5X_H */ 80
