| /* |
| =========================================================================== |
| File: BASOP.H v.1.1 - 05.Jul.2000 |
| =========================================================================== |
| |
| ITU-T STL BASIC OPERATORS |
| |
| GLOBAL FUNCTION PROTOTYPES |
| |
| History: |
| 26.Jan.00 v1.0 Incorporated to the STL from updated G.723.1/G.729 |
| basic operator library (based on basic_op.h) and |
| G.723.1's basop.h. |
| 05.Jul.00 v1.1 Added 32-bit shiftless mult/mac/msub operators |
| ============================================================================ |
| */ |
| |
| #ifndef BASOP_H_DEFINED |
| #define BASOP_H_DEFINED 110 |
| |
| /*___________________________________________________________________________ |
| | | |
| | Constants and Globals | |
| | | |
| | $Id $ |
| |___________________________________________________________________________| |
| */ |
| |
| extern Flag Overflow; |
| extern Flag Carry; |
| |
| #define MAX_32 (Word32)0x7fffffffL |
| #define MIN_32 (Word32)0x80000000L |
| |
| #define MAX_16 (Word16)0x7fff |
| #define MIN_16 (Word16)0x8000 |
| |
| #define UMAX_32 (Word32)0xffffffffL |
| #define UMIN_32 (Word32)0x00000000L |
| |
| /*___________________________________________________________________________ |
| | | |
| | Prototypes for basic arithmetic operators | |
| |___________________________________________________________________________| |
| */ |
| |
| Word16 add (Word16 var1, Word16 var2); /* Short add, 1 */ |
| Word16 sub (Word16 var1, Word16 var2); /* Short sub, 1 */ |
| Word16 abs_s (Word16 var1); /* Short abs, 1 */ |
| Word16 shl (Word16 var1, Word16 var2); /* Short shift left, 1 */ |
| Word16 shr (Word16 var1, Word16 var2); /* Short shift right, 1 */ |
| Word16 mult (Word16 var1, Word16 var2); /* Short mult, 1 */ |
| Word32 L_mult (Word16 var1, Word16 var2); /* Long mult, 1 */ |
| Word16 negate (Word16 var1); /* Short negate, 1 */ |
| Word16 extract_h (Word32 L_var1); /* Extract high, 1 */ |
| Word16 extract_l (Word32 L_var1); /* Extract low, 1 */ |
| Word16 itu_round (Word32 L_var1); /* Round, 1 */ |
| Word32 L_mac (Word32 L_var3, Word16 var1, Word16 var2); /* Mac, 1 */ |
| Word32 L_msu (Word32 L_var3, Word16 var1, Word16 var2); /* Msu, 1 */ |
| Word32 L_macNs (Word32 L_var3, Word16 var1, Word16 var2); /* Mac without |
| sat, 1 */ |
| Word32 L_msuNs (Word32 L_var3, Word16 var1, Word16 var2); /* Msu without |
| sat, 1 */ |
| Word32 L_add (Word32 L_var1, Word32 L_var2); /* Long add, 2 */ |
| Word32 L_sub (Word32 L_var1, Word32 L_var2); /* Long sub, 2 */ |
| Word32 L_add_c (Word32 L_var1, Word32 L_var2); /* Long add with c, 2 */ |
| Word32 L_sub_c (Word32 L_var1, Word32 L_var2); /* Long sub with c, 2 */ |
| Word32 L_negate (Word32 L_var1); /* Long negate, 2 */ |
| Word16 mult_r (Word16 var1, Word16 var2); /* Mult with round, 2 */ |
| Word32 L_shl (Word32 L_var1, Word16 var2); /* Long shift left, 2 */ |
| Word32 L_shr (Word32 L_var1, Word16 var2); /* Long shift right, 2*/ |
| Word16 shr_r (Word16 var1, Word16 var2); /* Shift right with |
| round, 2 */ |
| Word16 mac_r (Word32 L_var3, Word16 var1, Word16 var2); /* Mac with |
| rounding,2 */ |
| Word16 msu_r (Word32 L_var3, Word16 var1, Word16 var2); /* Msu with |
| rounding,2 */ |
| Word32 L_deposit_h (Word16 var1); /* 16 bit var1 -> MSB, 2 */ |
| Word32 L_deposit_l (Word16 var1); /* 16 bit var1 -> LSB, 2 */ |
| |
| Word32 L_shr_r (Word32 L_var1, Word16 var2); /* Long shift right with |
| round, 3 */ |
| Word32 L_abs (Word32 L_var1); /* Long abs, 3 */ |
| Word32 L_sat (Word32 L_var1); /* Long saturation, 4 */ |
| Word16 norm_s (Word16 var1); /* Short norm, 15 */ |
| Word16 div_s (Word16 var1, Word16 var2); /* Short division, 18 */ |
| Word16 norm_l (Word32 L_var1); /* Long norm, 30 */ |
| |
| /* |
| Additional G.723.1 operators |
| */ |
| Word32 L_mls( Word32, Word16 ) ; /* Weight FFS; currently assigned 1 */ |
| Word16 div_l( Word32, Word16 ) ; /* Weight FFS; currently assigned 1 */ |
| Word16 i_mult(Word16 a, Word16 b); /* Weight FFS; currently assigned 1 */ |
| |
| /* |
| New shiftless operators, not used in G.729/G.723.1 |
| */ |
| Word32 L_mult0(Word16 v1, Word16 v2); /* 32-bit Multiply w/o shift 1 */ |
| Word32 L_mac0(Word32 L_v3, Word16 v1, Word16 v2); /* 32-bit Mac w/o shift 1 */ |
| Word32 L_msu0(Word32 L_v3, Word16 v1, Word16 v2); /* 32-bit Msu w/o shift 1 */ |
| |
| /* |
| Additional G.722.1 operators |
| */ |
| UWord32 LU_shl (UWord32 L_var1, Word16 var2); |
| UWord32 LU_shr (UWord32 L_var1, Word16 var2); |
| #endif /* BASOP_H_DEFINED */ |
| |
| |
| /* ************************* END OF BASIC_OP.H ************************* */ |