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47 lines
982 B
47 lines
982 B
12 years ago
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/*
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* Utilities
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*/
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#ifndef __DUK_UTIL_H
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#define __DUK_UTIL_H 1
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#include "duk_bittypes.h"
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#define DUK_UTIL_MIN_HASH_PRIME 17 /* must match genhashsizes.py */
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#define DUK_UTIL_GET_HASH_PROBE_STEP(hash) (duk_util_probe_steps[(hash) & 0x1f])
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/*
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* Bitstream decoder
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*/
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struct duk_bitdecoder_ctx {
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duk_u8 *data;
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duk_u32 offset;
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duk_u32 length;
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duk_u32 currval;
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duk_u32 currbits;
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};
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/*
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* Prototypes
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*/
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/* Note: assumes that duk_util_probe_steps size is 32 */
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extern duk_u8 duk_util_probe_steps[32];
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duk_u32 duk_util_hashbytes(duk_u8 *data, duk_u32 len, duk_u32 seed);
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duk_u32 duk_util_get_hash_prime(duk_u32 size);
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duk_u32 duk_bd_decode(duk_bitdecoder_ctx *ctx, int bits);
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int duk_bd_decode_flag(duk_bitdecoder_ctx *ctx);
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void duk_util_base64_encode(const unsigned char *src, unsigned char *dst, size_t len);
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duk_u32 duk_util_tinyrandom_get_bits(duk_hthread *thr, int n);
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double duk_util_tinyrandom_get_double(duk_hthread *thr);
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#endif /* __DUK_UTIL_H */
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