LGram16
dd97ddec92
Move git root from Client/ to src/ to track all source code: - Client: Game client source (moved to Client/Client/) - Server: Game server source - GameTools: Development tools - CryptoSource: Encryption utilities - database: Database scripts - Script: Game scripts - rylCoder_16.02.2008_src: Legacy coder tools - GMFont, Game: Additional resources 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
84 lines
3.3 KiB
C++
84 lines
3.3 KiB
C++
// FastMath.cpp: implementation of the CFastMath class.
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//
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//////////////////////////////////////////////////////////////////////
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#include "stdafx.h"
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#include "Math.h"
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///////////////////////////////////////////////////////////////////////////////////////////////
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// utility functions
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// 0 -0x7FFFFFFF.
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unsigned long Math::Random::ComplexRandom(int nExtent)
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{
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if (nExtent < 1)
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{
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return 1;
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}
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static unsigned long x = 1;
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static unsigned long c = 0;
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static unsigned long a = 2083801278UL;
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#define addto(rh,rl,ah,al) (rl) = ((rl) + (al)) & 0xFFFFFFFFUL; \
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(rh) = ((rh) + (ah) + (((rl) < (al)) ? 1 : 0)) & 0xFFFFFFFFUL
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unsigned long xl = (x & 0xFFFFUL);
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unsigned long xh = (x >> 16) & 0xFFFFUL;
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unsigned long al = (a & 0xFFFFUL);
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unsigned long ah = (a >> 16) & 0xFFFFUL;
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unsigned long tmp;
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x = c;
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c = 0;
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tmp = xl * al;
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addto(c, x, 0, tmp);
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tmp = xl * ah;
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addto(c, x, (tmp >> 16), (tmp & 0xFFFFUL) << 16);
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tmp = xh * ah;
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addto(c, x, tmp, 1);
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tmp = xh * al;
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addto(c, x, (tmp >> 16), (tmp & 0xFFFFUL) << 16);
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return (x % nExtent); // return x & 0x7FFFFFFFUL;
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}
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// This table only works on Little Endian(Byte Order) machine.
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const unsigned short Math::Convert::m_FastHeToBi[0x100] =
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{
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0x3030, 0x3130, 0x3230, 0x3330, 0x3430, 0x3530, 0x3630, 0x3730,
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0x3830, 0x3930, 0x4130, 0x4230, 0x4330, 0x4430, 0x4530, 0x4630,
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0x3031, 0x3131, 0x3231, 0x3331, 0x3431, 0x3531, 0x3631, 0x3731,
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0x3831, 0x3931, 0x4131, 0x4231, 0x4331, 0x4431, 0x4531, 0x4631,
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0x3032, 0x3132, 0x3232, 0x3332, 0x3432, 0x3532, 0x3632, 0x3732,
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0x3832, 0x3932, 0x4132, 0x4232, 0x4332, 0x4432, 0x4532, 0x4632,
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0x3033, 0x3133, 0x3233, 0x3333, 0x3433, 0x3533, 0x3633, 0x3733,
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0x3833, 0x3933, 0x4133, 0x4233, 0x4333, 0x4433, 0x4533, 0x4633,
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0x3034, 0x3134, 0x3234, 0x3334, 0x3434, 0x3534, 0x3634, 0x3734,
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0x3834, 0x3934, 0x4134, 0x4234, 0x4334, 0x4434, 0x4534, 0x4634,
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0x3035, 0x3135, 0x3235, 0x3335, 0x3435, 0x3535, 0x3635, 0x3735,
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0x3835, 0x3935, 0x4135, 0x4235, 0x4335, 0x4435, 0x4535, 0x4635,
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0x3036, 0x3136, 0x3236, 0x3336, 0x3436, 0x3536, 0x3636, 0x3736,
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0x3836, 0x3936, 0x4136, 0x4236, 0x4336, 0x4436, 0x4536, 0x4636,
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0x3037, 0x3137, 0x3237, 0x3337, 0x3437, 0x3537, 0x3637, 0x3737,
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0x3837, 0x3937, 0x4137, 0x4237, 0x4337, 0x4437, 0x4537, 0x4637,
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0x3038, 0x3138, 0x3238, 0x3338, 0x3438, 0x3538, 0x3638, 0x3738,
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0x3838, 0x3938, 0x4138, 0x4238, 0x4338, 0x4438, 0x4538, 0x4638,
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0x3039, 0x3139, 0x3239, 0x3339, 0x3439, 0x3539, 0x3639, 0x3739,
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0x3839, 0x3939, 0x4139, 0x4239, 0x4339, 0x4439, 0x4539, 0x4639,
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0x3041, 0x3141, 0x3241, 0x3341, 0x3441, 0x3541, 0x3641, 0x3741,
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0x3841, 0x3941, 0x4141, 0x4241, 0x4341, 0x4441, 0x4541, 0x4641,
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0x3042, 0x3142, 0x3242, 0x3342, 0x3442, 0x3542, 0x3642, 0x3742,
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0x3842, 0x3942, 0x4142, 0x4242, 0x4342, 0x4442, 0x4542, 0x4642,
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0x3043, 0x3143, 0x3243, 0x3343, 0x3443, 0x3543, 0x3643, 0x3743,
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0x3843, 0x3943, 0x4143, 0x4243, 0x4343, 0x4443, 0x4543, 0x4643,
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0x3044, 0x3144, 0x3244, 0x3344, 0x3444, 0x3544, 0x3644, 0x3744,
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0x3844, 0x3944, 0x4144, 0x4244, 0x4344, 0x4444, 0x4544, 0x4644,
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0x3045, 0x3145, 0x3245, 0x3345, 0x3445, 0x3545, 0x3645, 0x3745,
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0x3845, 0x3945, 0x4145, 0x4245, 0x4345, 0x4445, 0x4545, 0x4645,
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0x3046, 0x3146, 0x3246, 0x3346, 0x3446, 0x3546, 0x3646, 0x3746,
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0x3846, 0x3946, 0x4146, 0x4246, 0x4346, 0x4446, 0x4546, 0x4646,
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};
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