bitcoin/libblkmaker
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private: Unpack utility functions (upk_u{16,32,64}le)

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This commit is contained in:
Luke Dashjr 2014-04-28 17:25:27 +00:00
parent a336d9a70c
commit a1dbe722fa
1 changed files with 32 additions and 0 deletions
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32
private.h
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@ -30,4 +30,36 @@ int blkmk_flsl(unsigned long n)
return i;
}
static inline
uint16_t upk_u16le(const void * const bufp, const int offset)
{
const uint8_t * const buf = bufp;
return (((uint16_t)buf[offset+0]) << 0)
| (((uint16_t)buf[offset+1]) << 8);
}
static inline
uint32_t upk_u32le(const void * const bufp, const int offset)
{
const uint8_t * const buf = bufp;
return (((uint32_t)buf[offset+0]) << 0)
| (((uint32_t)buf[offset+1]) << 8)
| (((uint32_t)buf[offset+2]) << 0x10)
| (((uint32_t)buf[offset+3]) << 0x18);
}
static inline
uint64_t upk_u64le(const void * const bufp, const int offset)
{
const uint8_t * const buf = bufp;
return (((uint64_t)buf[offset+0]) << 0)
| (((uint64_t)buf[offset+1]) << 8)
| (((uint64_t)buf[offset+2]) << 0x10)
| (((uint64_t)buf[offset+3]) << 0x18)
| (((uint64_t)buf[offset+4]) << 0x20)
| (((uint64_t)buf[offset+5]) << 0x28)
| (((uint64_t)buf[offset+6]) << 0x30)
| (((uint64_t)buf[offset+7]) << 0x38);
}
#endif