Mercurial > mm7

comparison OurMath.h @ 2040:98a727563cc3

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Слияние
author Ritor1
date Fri, 22 Nov 2013 13:54:38 +0600
parents 7a9477135943
children 8e9be4fa33a8
comparison
equal deleted inserted replaced
2039:6971834a0d81 2040:98a727563cc3
1 #pragma once
2
3 #include <cassert>
4 #include <limits>
5
6 /* 186 */
7 #pragma pack(push, 1)
8 struct stru193_math
9 {
10 stru193_math();
11 int Cos(int angle);
12 unsigned int Atan2(int x, int y);
13 int Sin(int angle);
14
15 int pTanTable[520];
16 int pCosTable[520];
17 int pInvCosTable[520];
18 static const unsigned int uIntegerPi = 1024;
19 static const unsigned int uIntegerHalfPi = 512;
20 static const unsigned int uIntegerDoublePi = 2048;
21 static const unsigned int uDoublePiMask = 2047;
22 static const unsigned int uPiMask = 1023;
23 static const unsigned int uHalfPiMask = 511;
24 };
25 #pragma pack(pop)
26
27 __int64 fixpoint_mul(int, int);
28 __int64 fixpoint_dot(int x1, int x2, int y1, int y2, int z1, int z2);
29 __int64 fixpoint_div(int, int);
30 __int64 fixpoint_sub_unknown(int, int);
31 int fixpoint_from_float(float value);
32 int fixpoint_from_int(int lhv, int rhv);
33
34 template <typename FloatType>
35 inline int bankersRounding(
36 const FloatType& value
37 ) {
38 assert("Method unsupported for this type" && false);
39 return value;
40 }
41
42 template<> inline int bankersRounding<float>(const float& inValue)
43 {
44 union Cast
45 {
46 double d;
47 long l;
48 };
49 volatile Cast c;
50 c.d = inValue + 6755399441055744.0;
51 return c.l;
52 }
53
54 #pragma push_macro("max")
55 #undef max
56 template<> inline int bankersRounding<double>(const double& inValue)
57 {
58 double maxValue = std::numeric_limits<int>::max();
59 assert(maxValue - 6755399441055744.0 >= inValue);
60 union Cast
61 {
62 double d;
63 long l;
64 };
65 volatile Cast c;
66 c.d = inValue + 6755399441055744.0;
67 return c.l;
68 }
69 #pragma pop_macro("max")
70
71 extern struct stru193_math *stru_5C6E00;