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annotate libgsmefr/basic_op.h @ 107:41f1ae68d253

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amr2efr & efr2amr cosmetic: cleaner approach to bit reshuffling
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 27 Nov 2022 21:02:07 +0000
parents 38326102fc43
children 1c514150c033
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38326102fc43 libgsmefr: beginning to integrate code from ETSI
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1 /*___________________________________________________________________________
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2 | |
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3 | Constants and Globals |
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4 |___________________________________________________________________________|
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5 */
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6 extern __thread Flag Overflow;
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7 extern __thread Flag Carry;
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8
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9 #define MAX_32 (Word32)0x7fffffffL
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10 #define MIN_32 (Word32)0x80000000L
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12 #define MAX_16 (Word16)0x7fff
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13 #define MIN_16 (Word16)0x8000
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15 /*___________________________________________________________________________
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16 | |
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17 | Prototypes for basic arithmetic operators |
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18 |___________________________________________________________________________|
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19 */
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20
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21 Word16 add (Word16 var1, Word16 var2); /* Short add, 1 */
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22 Word16 sub (Word16 var1, Word16 var2); /* Short sub, 1 */
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23 Word16 abs_s (Word16 var1); /* Short abs, 1 */
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24 Word16 shl (Word16 var1, Word16 var2); /* Short shift left, 1 */
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25 Word16 shr (Word16 var1, Word16 var2); /* Short shift right, 1 */
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26 Word16 mult (Word16 var1, Word16 var2); /* Short mult, 1 */
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27 Word32 L_mult (Word16 var1, Word16 var2); /* Long mult, 1 */
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28 Word16 negate (Word16 var1); /* Short negate, 1 */
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29 Word16 extract_h (Word32 L_var1); /* Extract high, 1 */
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30 Word16 extract_l (Word32 L_var1); /* Extract low, 1 */
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31 Word16 round (Word32 L_var1); /* Round, 1 */
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32 Word32 L_mac (Word32 L_var3, Word16 var1, Word16 var2); /* Mac, 1 */
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33 Word32 L_msu (Word32 L_var3, Word16 var1, Word16 var2); /* Msu, 1 */
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34 Word32 L_macNs (Word32 L_var3, Word16 var1, Word16 var2); /* Mac without
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35 sat, 1 */
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36 Word32 L_msuNs (Word32 L_var3, Word16 var1, Word16 var2); /* Msu without
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37 sat, 1 */
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38 Word32 L_add (Word32 L_var1, Word32 L_var2); /* Long add, 2 */
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39 Word32 L_sub (Word32 L_var1, Word32 L_var2); /* Long sub, 2 */
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40 Word32 L_add_c (Word32 L_var1, Word32 L_var2); /* Long add with c, 2 */
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41 Word32 L_sub_c (Word32 L_var1, Word32 L_var2); /* Long sub with c, 2 */
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42 Word32 L_negate (Word32 L_var1); /* Long negate, 2 */
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43 Word16 mult_r (Word16 var1, Word16 var2); /* Mult with round, 2 */
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44 Word32 L_shl (Word32 L_var1, Word16 var2); /* Long shift left, 2 */
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45 Word32 L_shr (Word32 L_var1, Word16 var2); /* Long shift right, 2*/
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46 Word16 shr_r (Word16 var1, Word16 var2); /* Shift right with
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47 round, 2 */
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48 Word16 mac_r (Word32 L_var3, Word16 var1, Word16 var2); /* Mac with
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49 rounding,2 */
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50 Word16 msu_r (Word32 L_var3, Word16 var1, Word16 var2); /* Msu with
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51 rounding,2 */
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52 Word32 L_deposit_h (Word16 var1); /* 16 bit var1 -> MSB, 2 */
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53 Word32 L_deposit_l (Word16 var1); /* 16 bit var1 -> LSB, 2 */
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55 Word32 L_shr_r (Word32 L_var1, Word16 var2); /* Long shift right with
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56 round, 3 */
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57 Word32 L_abs (Word32 L_var1); /* Long abs, 3 */
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58 Word32 L_sat (Word32 L_var1); /* Long saturation, 4 */
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59 Word16 norm_s (Word16 var1); /* Short norm, 15 */
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60 Word16 div_s (Word16 var1, Word16 var2); /* Short division, 18 */
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61 Word16 norm_l (Word32 L_var1); /* Long norm, 30 */
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