upstream/mercurial-mirror Files · mercurial/bitmanipulation.h

setdiscovery: don't use dagutil to compute heads...

setdiscovery: don't use dagutil to compute heads This is a relatively trivial operation to perform. We don't need to use dagutil. This brings us one step closer to eliminating dagutil. We still need to populate the heads on revlogdag because later functionality relies on it. Differential Revision: https://phab.mercurial-scm.org/D4310

Augie Fackler - - Load All Authors

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      #ifndef _HG_BITMANIPULATION_H_

      #define _HG_BITMANIPULATION_H_

      #include <string.h>

      #include "compat.h"

      static inline uint32_t getbe32(const char *c)

      {

      	const unsigned char *d = (const unsigned char *)c;

      	return ((((uint32_t)d[0]) << 24) | (((uint32_t)d[1]) << 16) |

      	        (((uint32_t)d[2]) << 8) | (d[3]));

      }

      static inline int16_t getbeint16(const char *c)

      {

      	const unsigned char *d = (const unsigned char *)c;

      	return ((d[0] << 8) | (d[1]));

      }

      static inline uint16_t getbeuint16(const char *c)

      {

      	const unsigned char *d = (const unsigned char *)c;

      	return ((d[0] << 8) | (d[1]));

      }

      static inline void putbe32(uint32_t x, char *c)

      {

      	c[0] = (x >> 24) & 0xff;

      	c[1] = (x >> 16) & 0xff;

      	c[2] = (x >> 8) & 0xff;

      	c[3] = (x)&0xff;

      }

      static inline double getbefloat64(const char *c)

      {

      	const unsigned char *d = (const unsigned char *)c;

      	double ret;

      	int i;

      	uint64_t t = 0;

      	for (i = 0; i < 8; i++) {

      		t = (t << 8) + d[i];

      	}

      	memcpy(&ret, &t, sizeof(t));

      	return ret;

      }

      #endif

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				#ifndef _HG_BITMANIPULATION_H_
				#define _HG_BITMANIPULATION_H_

				#include <string.h>

				#include "compat.h"

				static inline uint32_t getbe32(const char *c)
				{
				const unsigned char d = (const unsigned char )c;

				return ((((uint32_t)d[0]) << 24) \| (((uint32_t)d[1]) << 16) \|
				(((uint32_t)d[2]) << 8) \| (d[3]));
				}

				static inline int16_t getbeint16(const char *c)
				{
				const unsigned char d = (const unsigned char )c;

				return ((d[0] << 8) \| (d[1]));
				}

				static inline uint16_t getbeuint16(const char *c)
				{
				const unsigned char d = (const unsigned char )c;

				return ((d[0] << 8) \| (d[1]));
				}

				static inline void putbe32(uint32_t x, char *c)
				{
				c[0] = (x >> 24) & 0xff;
				c[1] = (x >> 16) & 0xff;
				c[2] = (x >> 8) & 0xff;
				c[3] = (x)&0xff;
				}

				static inline double getbefloat64(const char *c)
				{
				const unsigned char d = (const unsigned char )c;
				double ret;
				int i;
				uint64_t t = 0;
				for (i = 0; i < 8; i++) {
				t = (t << 8) + d[i];
				}
				memcpy(&ret, &t, sizeof(t));
				return ret;
				}

				#endif