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| Rev | Author | Line No. | Line |
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| 1 | pmbaty | 1 | /* |
| 2 | * This file is part of the DXX-Rebirth project <https://www.dxx-rebirth.com/>. |
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| 3 | * It is copyright by its individual contributors, as recorded in the |
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| 4 | * project's Git history. See COPYING.txt at the top level for license |
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| 5 | * terms and a link to the Git history. |
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| 6 | */ |
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| 7 | /* |
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| 8 | * |
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| 9 | * Descent random number stuff... |
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| 10 | * rand has different ranges on different machines... |
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| 11 | * |
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| 12 | */ |
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| 13 | |||
| 14 | #include <stdlib.h> |
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| 15 | #include "maths.h" |
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| 16 | |||
| 17 | namespace dcx { |
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| 18 | |||
| 19 | #ifdef NO_WATCOM_RAND |
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| 20 | |||
| 21 | void d_srand(unsigned int seed) |
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| 22 | { |
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| 23 | srand(seed); |
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| 24 | } |
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| 25 | |||
| 26 | int d_rand() |
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| 27 | { |
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| 28 | return rand() & 0x7fff; |
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| 29 | } |
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| 30 | |||
| 31 | #else |
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| 32 | |||
| 33 | static unsigned int d_rand_seed; |
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| 34 | |||
| 35 | int d_rand() |
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| 36 | { |
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| 37 | return ((d_rand_seed = d_rand_seed * 0x41c64e6d + 0x3039) >> 16) & 0x7fff; |
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| 38 | } |
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| 39 | |||
| 40 | void d_srand(unsigned int seed) |
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| 41 | { |
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| 42 | d_rand_seed = seed; |
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| 43 | } |
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| 44 | |||
| 45 | #endif |
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| 46 | |||
| 47 | } |