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annotate dowa/d_math.c @ 268:f7b1188d5fb1

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author MrJuneJune <me@mrjunejune.com>
date Fri, 07 Aug 2026 13:02:41 -0700
parents 655ea0b661fd
children
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rev   line source
92
655ea0b661fd [Seobeo] Added few endpoints for handling files. [Dowa] Added few functions for random number and generating uuids
June Park <parkjune1995@gmail.com>
parents:
diff changeset
1 #include "dowa.h"
655ea0b661fd [Seobeo] Added few endpoints for handling files. [Dowa] Added few functions for random number and generating uuids
June Park <parkjune1995@gmail.com>
parents:
diff changeset
2
655ea0b661fd [Seobeo] Added few endpoints for handling files. [Dowa] Added few functions for random number and generating uuids
June Park <parkjune1995@gmail.com>
parents:
diff changeset
3 /* Thank you Eskil */
655ea0b661fd [Seobeo] Added few endpoints for handling files. [Dowa] Added few functions for random number and generating uuids
June Park <parkjune1995@gmail.com>
parents:
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4 uint32 Dowa_Math_Random_Uint32(uint32 seed_number)
655ea0b661fd [Seobeo] Added few endpoints for handling files. [Dowa] Added few functions for random number and generating uuids
June Park <parkjune1995@gmail.com>
parents:
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5 {
655ea0b661fd [Seobeo] Added few endpoints for handling files. [Dowa] Added few functions for random number and generating uuids
June Park <parkjune1995@gmail.com>
parents:
diff changeset
6 seed_number ^= seed_number << 13;
655ea0b661fd [Seobeo] Added few endpoints for handling files. [Dowa] Added few functions for random number and generating uuids
June Park <parkjune1995@gmail.com>
parents:
diff changeset
7 seed_number ^= seed_number >> 17;
655ea0b661fd [Seobeo] Added few endpoints for handling files. [Dowa] Added few functions for random number and generating uuids
June Park <parkjune1995@gmail.com>
parents:
diff changeset
8 seed_number ^= seed_number << 5;
655ea0b661fd [Seobeo] Added few endpoints for handling files. [Dowa] Added few functions for random number and generating uuids
June Park <parkjune1995@gmail.com>
parents:
diff changeset
9 return seed_number & 0x7fffffff;
655ea0b661fd [Seobeo] Added few endpoints for handling files. [Dowa] Added few functions for random number and generating uuids
June Park <parkjune1995@gmail.com>
parents:
diff changeset
10
655ea0b661fd [Seobeo] Added few endpoints for handling files. [Dowa] Added few functions for random number and generating uuids
June Park <parkjune1995@gmail.com>
parents:
diff changeset
11 //seed_number = (seed_number << 13) ^ seed_number;
655ea0b661fd [Seobeo] Added few endpoints for handling files. [Dowa] Added few functions for random number and generating uuids
June Park <parkjune1995@gmail.com>
parents:
diff changeset
12 //return ((seed_number * (seed_number * seed_number * 15731 + 789221) + 1376312589) & 0x7fffffff);
655ea0b661fd [Seobeo] Added few endpoints for handling files. [Dowa] Added few functions for random number and generating uuids
June Park <parkjune1995@gmail.com>
parents:
diff changeset
13 }