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/**
* @file u64.cpp
* @brief Utilities to deal with U64s.
*
* Copyright (c) 2001-$CurrentYear$, Linden Research, Inc.
* $License$
*/
#include "linden_common.h"
#include "u64.h"
U64 str_to_U64(const char *str)
{
U64 result = 0;
char *aptr = strpbrk(str,"0123456789");
if (!aptr)
{
llwarns << "str_to_U64: Bad string to U64 conversion attempt: format\n" << llendl;
}
else
{
while ((*aptr >= '0') && (*aptr <= '9'))
{
result = result*10 + (*aptr++ - '0');
}
}
return (result);
}
char* U64_to_str(U64 value, char* result, S32 result_size)
{
U32 part1,part2,part3;
part3 = (U32)(value % (U64)10000000);
value /= 10000000;
part2 = (U32)(value % (U64)10000000);
value /= 10000000;
part1 = (U32)(value % (U64)10000000);
// three cases to avoid leading zeroes unless necessary
if (part1)
{
snprintf(
result,
result_size,
"%u%07u%07u",
part1,part2,part3); /* Flawfinder: ignore */
}
else if (part2)
{
snprintf(
result,
result_size,
"%u%07u",
part2,part3); /* Flawfinder: ignore */
}
else
{
snprintf(
result,
result_size,
"%u",
part3); /* Flawfinder: ignore */
}
return (result);
}
F64 U64_to_F64(const U64 value)
{
S64 top_bits = (S64)(value >> 1);
F64 result = (F64)top_bits;
result *= 2.f;
result += (U32)(value & 0x01);
return result;
}
U64 llstrtou64(const char* str, char** end, S32 base)
{
#ifdef LL_WINDOWS
return _strtoui64(str,end,base);
#else
return strtoull(str,end,base);
#endif
}
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