#ifndef HG_BITMANIPULATION_H

#define HG_BITMANIPULATION_H

#include <string.h>

#include "compat.h"

/* Reads a 64 bit integer from big-endian bytes. Assumes that the data is long

 enough */

static inline uint64_t getbe64(const char *c)

{

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

	return ((((uint64_t)d[0]) << 56) | (((uint64_t)d[1]) << 48) |

	        (((uint64_t)d[2]) << 40) | (((uint64_t)d[3]) << 32) |

	        (((uint64_t)d[4]) << 24) | (((uint64_t)d[5]) << 16) |

	        (((uint64_t)d[6]) << 8) | (d[7]));

}

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]));

}

/* Writes a 64 bit integer to bytes in a big-endian format.

 Assumes that the buffer is long enough */

static inline void putbe64(uint64_t x, char *c)

{

	c[0] = (x >> 56) & 0xff;

	c[1] = (x >> 48) & 0xff;

	c[2] = (x >> 40) & 0xff;

	c[3] = (x >> 32) & 0xff;

	c[4] = (x >> 24) & 0xff;

	c[5] = (x >> 16) & 0xff;

	c[6] = (x >> 8) & 0xff;

	c[7] = (x)&0xff;

}

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