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#include <stdio.h>
#include <stdint.h>
void bitprint( uint16_t u )
{
for( int i = 15; i >= 0; i-- )
printf("%c", (u&(1<<i))?'1':'0');
printf("\n");
}
void bitprint( uint32_t u )
{
for( int i = 31; i >= 0; i-- )
printf("%c", (u&(1<<i))?'1':'0');
printf("\n");
}
void utoutf16( uint32_t in, uint16_t &outHi, uint16_t &outLo )
{
outHi = (((in-0x10000)>>10)&0x3FF)| 0xD800u;
outLo = ((in-0x10000)&0x3FF)| 0xDC00u;
printf("0x%X == 0x%X, 0x%X\n", in, outHi, outLo );
}
int32_t utf16tou( uint16_t hi, uint16_t lo )
{
return (((uint32_t)hi&0x3FF)<<10 | lo&0x3FF)+0x10000;
}
int main()
{
bitprint( 0xD800u );
bitprint( 0xDC00u );
uint16_t hi, lo;
utoutf16( 0x1D11E, hi, lo ); // Cat face with wry smile
utoutf16( 0x10FFFD, hi, lo ); // Cat face with wry smile
utoutf16( 0x1F63C, hi, lo ); // Cat face with wry smile
bitprint( hi );
bitprint( lo );
printf("0x%X\n", utf16tou( hi, lo ) );
return 0;
}
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