shenleiandClaude Opus 5.5
a46093104c
- extension/src/{port,platform,codepage} -> src/; native_render -> src/host
(+ dxt, shaders/); libgr2 -> src/gr2; extension/third_party -> third_party
- extension/tests -> tests/port, libgr2/tests -> tests/gr2
- android-native -> android (build.sh, push-client.sh moved in)
- script -> scripts; tools/40250 -> tools/server; oracle -> tools/granny-oracle;
perf tools -> tools/perf
- all build trees under build/ (native, release, android, port-gate)
- xrender:: CMake aliases -> mt::; port-map ledger impl paths rewritten
No code changes. ctest 15/15, port_gate macos+android PASS, port_map check 0 errors.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
50 lines
1.1 KiB
C++
50 lines
1.1 KiB
C++
#include "StdAfx.h"
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#include "Random.h" // PORT: the POSIX-safe names (Random.h) must be in scope for the definitions
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#include <assert.h>
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static unsigned long randseed = 1;
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void srandom(unsigned long seed)
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{
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randseed = seed;
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}
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/*
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* Pseudo-random number generator for randomizing the profiling clock,
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* and whatever else we might use it for. The result is uniform on
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* [0, 2^31 - 1].
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*/
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unsigned long random()
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{
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long x, hi, lo, t;
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/*
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* Compute x[n + 1] = (7^5 * x[n]) mod (2^31 - 1).
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* From "Random number generators: good ones are hard to find",
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* Park and Miller, Communications of the ACM, vol. 31, no. 10,
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* October 1988, p. 1195.
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*/
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x = randseed;
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hi = x / 127773;
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lo = x % 127773;
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t = 16807 * lo - 2836 * hi;
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if (t <= 0)
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t += 0x7fffffff;
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randseed = t;
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return (t);
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}
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float frandom(float flLow, float flHigh)
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{
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float fl = float(random()) / float(2147483648.0f); // float in [0,1)
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return (fl * (flHigh - flLow)) + flLow; // float in [low,high)
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}
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long random_range(long from, long to)
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{
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assert(from <= to);
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return ((random() % (to - from + 1)) + from);
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}
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