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f4f4caab0e
I wanted a tiny scriptable meltdown proof way to run userspace programs and visualize how program execution impacts memory. It helps to explain how things like Actually Portable Executable works. It can show you how the GCC generated code is going about manipulating matrices and more. I didn't feel fully comfortable with Qemu and Bochs because I'm not smart enough to understand them. I wanted something like gVisor but with much stronger levels of assurances. I wanted a single binary that'll run, on all major operating systems with an embedded GPL barrier ZIP filesystem that is tiny enough to transpile to JavaScript and run in browsers too. https://justine.storage.googleapis.com/emulator625.mp4
30 lines
1.6 KiB
C
30 lines
1.6 KiB
C
#ifndef COSMOPOLITAN_LIBC_RAND_RAND_H_
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#define COSMOPOLITAN_LIBC_RAND_RAND_H_
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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COSMOPOLITAN_C_START_
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/*───────────────────────────────────────────────────────────────────────────│─╗
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│ cosmopolitan § random ─╬─│┼
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╚────────────────────────────────────────────────────────────────────────────│*/
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#define RAND_MAX __INT_MAX__ /* only applies to rand() */
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void srand(uint64_t) nothrow nocallback; /* seeds rand() only */
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int rand(void) nothrow nocallback; /* ≥0 unseeded lcg prng */
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uint32_t rand32(void) nothrow nocallback; /* random as possible rng */
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uint64_t rand64(void) nothrow nocallback; /* random as possible rng */
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double poz(double); /* verify our claims */
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double pochisq(double, int);
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void rt_init(int);
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void rt_add(void *, int);
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void rt_end(double *, double *, double *, double *, double *);
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void *rngset(void *, size_t, uint64_t (*)(void), size_t) paramsnonnull();
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char *strfry(char *);
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int getentropy(void *, size_t);
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ssize_t getrandom(void *, size_t, unsigned);
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int devrand(void *, size_t);
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int64_t winrandish(void);
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uint64_t rdrand(void);
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float randf(void);
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COSMOPOLITAN_C_END_
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_RAND_RAND_H_ */
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