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comparison libgsmhr1/mathhalf.h @ 500:66fb1fd032e6

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libgsmhr1/mathhalf.[ch]: import original
author Mychaela Falconia <falcon@freecalypso.org>
date Wed, 19 Jun 2024 00:51:26 +0000
parents
children 597b39aef484
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499:446a4a2955ba 500:66fb1fd032e6
1 #ifndef __MATHHALF
2 #define __MATHHALF
3
4 #include "typedefs.h"
5
6 /*_________________________________________________________________________
7 | |
8 | Function Prototypes |
9 |_________________________________________________________________________|
10 */
11
12 /* addition */
13 /************/
14
15 Shortword add(Shortword var1, Shortword var2); /* 1 ops */
16 Shortword sub(Shortword var1, Shortword var2); /* 1 ops */
17 Longword L_add(Longword L_var1, Longword L_var2); /* 2 ops */
18 Longword L_sub(Longword L_var1, Longword L_var2); /* 2 ops */
19
20 /* multiplication */
21 /******************/
22
23 Shortword mult(Shortword var1, Shortword var2); /* 1 ops */
24 Longword L_mult(Shortword var1, Shortword var2); /* 1 ops */
25 Shortword mult_r(Shortword var1, Shortword var2); /* 2 ops */
26
27
28 /* arithmetic shifts */
29 /*********************/
30
31 Shortword shr(Shortword var1, Shortword var2); /* 1 ops */
32 Shortword shl(Shortword var1, Shortword var2); /* 1 ops */
33 Longword L_shr(Longword L_var1, Shortword var2); /* 2 ops */
34 Longword L_shl(Longword L_var1, Shortword var2); /* 2 ops */
35 Shortword shift_r(Shortword var, Shortword var2); /* 2 ops */
36 Longword L_shift_r(Longword L_var, Shortword var2); /* 3 ops */
37
38 /* absolute value */
39 /*******************/
40
41 Shortword abs_s(Shortword var1); /* 1 ops */
42 Longword L_abs(Longword var1); /* 3 ops */
43
44
45 /* multiply accumulate */
46 /************************/
47
48 Longword L_mac(Longword L_var3,
49 Shortword var1, Shortword var2); /* 1 op */
50 Shortword mac_r(Longword L_var3,
51 Shortword var1, Shortword var2); /* 2 op */
52 Longword L_msu(Longword L_var3,
53 Shortword var1, Shortword var2); /* 1 op */
54 Shortword msu_r(Longword L_var3,
55 Shortword var1, Shortword var2); /* 2 op */
56
57 /* negation */
58 /*************/
59
60 Shortword negate(Shortword var1); /* 1 ops */
61 Longword L_negate(Longword L_var1); /* 2 ops */
62
63
64 /* Accumulator manipulation */
65 /****************************/
66
67 Longword L_deposit_l(Shortword var1); /* 1 ops */
68 Longword L_deposit_h(Shortword var1); /* 1 ops */
69 Shortword extract_l(Longword L_var1); /* 1 ops */
70 Shortword extract_h(Longword L_var1); /* 1 ops */
71
72 /* Round */
73 /*********/
74
75 Shortword round(Longword L_var1); /* 1 ops */
76
77 /* Normalization */
78 /*****************/
79
80 Shortword norm_l(Longword L_var1); /* 30 ops */
81 Shortword norm_s(Shortword var1); /* 15 ops */
82
83 /* Division */
84 /************/
85 Shortword divide_s(Shortword var1, Shortword var2); /* 18 ops */
86
87 /* Non-saturating instructions */
88 /*******************************/
89 Longword L_add_c(Longword L_Var1, Longword L_Var2); /* 2 ops */
90 Longword L_sub_c(Longword L_Var1, Longword L_Var2); /* 2 ops */
91 Longword L_sat(Longword L_var1); /* 4 ops */
92 Longword L_macNs(Longword L_var3,
93 Shortword var1, Shortword var2); /* 1 ops */
94 Longword L_msuNs(Longword L_var3,
95 Shortword var1, Shortword var2); /* 1 ops */
96
97 #endif