39 lines
993 B
C
39 lines
993 B
C
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/*---------------------------------------------------------------------
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Copyright (c) 2008 - 2022, Charles Childers
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Portions are based on Ngaro, which was additionally copyright
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by the following:
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Copyright (c) 2009 - 2010, Luke Parrish
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Copyright (c) 2010, Marc Simpson
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Copyright (c) 2010, Jay Skeer
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Copyright (c) 2011, Kenneth Keating
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---------------------------------------------------------------------*/
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/* Random Number Generator --------------------------------------------*/
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#ifdef ENABLE_RNG
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void io_rng(NgaState *vm) {
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int64_t r = 0;
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char buffer[8];
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int i;
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ssize_t ignore;
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int fd = open("/dev/urandom", O_RDONLY);
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ignore = read(fd, buffer, 8);
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close(fd);
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for(i = 0; i < 8; ++i) {
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r = r << 8;
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r += ((int64_t)buffer[i] & 0xFF);
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}
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#ifndef BIT64
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stack_push(vm, (CELL)abs((CELL)r));
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#else
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stack_push(vm, (CELL)llabs((CELL)r));
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#endif
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}
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void query_rng(NgaState *vm) {
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stack_push(vm, 0);
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stack_push(vm, 10);
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}
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#endif
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