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Add missing functions for accessing big/little endian values

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There are functions for reading 8, 16, 24 and 32-bit big and little
endian values, but the corresponding functions for writing such values
are not always available. The 64-bit variants are also missing.
This commit is contained in:
Jef Driesen 2023-01-05 20:20:57 +01:00
parent 187f8d625b
commit 3ce34a0b6d
2 changed files with 130 additions and 27 deletions
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121
src/array.c
View File

@ -208,6 +208,32 @@ array_uint_le (const unsigned char data[], unsigned int n)
return value;
}
unsigned long long
array_uint64_be (const unsigned char data[])
{
return ((unsigned long long) data[0] << 56) |
((unsigned long long) data[1] << 48) |
((unsigned long long) data[2] << 40) |
((unsigned long long) data[3] << 32) |
((unsigned long long) data[4] << 24) |
((unsigned long long) data[5] << 16) |
((unsigned long long) data[6] << 8) |
((unsigned long long) data[7] << 0);
}
unsigned long long
array_uint64_le (const unsigned char data[])
{
return ((unsigned long long) data[0] << 0) |
((unsigned long long) data[1] << 8) |
((unsigned long long) data[2] << 16) |
((unsigned long long) data[3] << 24) |
((unsigned long long) data[4] << 32) |
((unsigned long long) data[5] << 40) |
((unsigned long long) data[6] << 48) |
((unsigned long long) data[7] << 56);
}
unsigned int
array_uint32_be (const unsigned char data[])
{
@ -237,17 +263,6 @@ array_uint32_word_be (const unsigned char data[])
((unsigned int) data[3] << 16);
}
void
array_uint32_le_set (unsigned char data[], const unsigned int input)
{
data[0] = input & 0xFF;
data[1] = (input >> 8) & 0xFF;
data[2] = (input >> 16) & 0xFF;
data[3] = (input >> 24) & 0xFF;
}
unsigned int
array_uint24_be (const unsigned char data[])
{
@ -256,16 +271,6 @@ array_uint24_be (const unsigned char data[])
((unsigned int) data[2] << 0);
}
void
array_uint24_be_set (unsigned char data[], const unsigned int input)
{
data[0] = (input >> 16) & 0xFF;
data[1] = (input >> 8) & 0xFF;
data[2] = input & 0xFF;
}
unsigned int
array_uint24_le (const unsigned char data[])
{
@ -289,6 +294,80 @@ array_uint16_le (const unsigned char data[])
((unsigned int) data[1] << 8);
}
void
array_uint64_be_set (unsigned char data[], const unsigned long long input)
{
data[0] = (input >> 56) & 0xFF;
data[1] = (input >> 48) & 0xFF;
data[2] = (input >> 40) & 0xFF;
data[3] = (input >> 32) & 0xFF;
data[4] = (input >> 24) & 0xFF;
data[5] = (input >> 16) & 0xFF;
data[6] = (input >> 8) & 0xFF;
data[7] = (input ) & 0xFF;
}
void
array_uint64_le_set (unsigned char data[], const unsigned long long input)
{
data[0] = (input ) & 0xFF;
data[1] = (input >> 8) & 0xFF;
data[2] = (input >> 16) & 0xFF;
data[3] = (input >> 24) & 0xFF;
data[4] = (input >> 32) & 0xFF;
data[5] = (input >> 40) & 0xFF;
data[6] = (input >> 48) & 0xFF;
data[7] = (input >> 56) & 0xFF;
}
void
array_uint32_be_set (unsigned char data[], const unsigned int input)
{
data[0] = (input >> 24) & 0xFF;
data[1] = (input >> 16) & 0xFF;
data[2] = (input >> 8) & 0xFF;
data[3] = (input ) & 0xFF;
}
void
array_uint32_le_set (unsigned char data[], const unsigned int input)
{
data[0] = (input ) & 0xFF;
data[1] = (input >> 8) & 0xFF;
data[2] = (input >> 16) & 0xFF;
data[3] = (input >> 24) & 0xFF;
}
void
array_uint24_be_set (unsigned char data[], const unsigned int input)
{
data[0] = (input >> 16) & 0xFF;
data[1] = (input >> 8) & 0xFF;
data[2] = (input ) & 0xFF;
}
void
array_uint24_le_set (unsigned char data[], const unsigned int input)
{
data[0] = (input ) & 0xFF;
data[1] = (input >> 8) & 0xFF;
data[2] = (input >> 16) & 0xFF;
}
void
array_uint16_be_set (unsigned char data[], const unsigned short input)
{
data[0] = (input >> 8) & 0xFF;
data[1] = (input ) & 0xFF;
}
void
array_uint16_le_set (unsigned char data[], const unsigned short input)
{
data[0] = (input ) & 0xFF;
data[1] = (input >> 8) & 0xFF;
}
unsigned char
bcd2dec (unsigned char value)
{

36
src/array.h
View File

@ -66,6 +66,12 @@ array_uint_be (const unsigned char data[], unsigned int n);
unsigned int
array_uint_le (const unsigned char data[], unsigned int n);
unsigned long long
array_uint64_be (const unsigned char data[]);
unsigned long long
array_uint64_le (const unsigned char data[]);
unsigned int
array_uint32_be (const unsigned char data[]);
@ -75,15 +81,9 @@ array_uint32_le (const unsigned char data[]);
unsigned int
array_uint32_word_be (const unsigned char data[]);
void
array_uint32_le_set (unsigned char data[], const unsigned int input);
unsigned int
array_uint24_be (const unsigned char data[]);
void
array_uint24_be_set (unsigned char data[], const unsigned int input);
unsigned int
array_uint24_le (const unsigned char data[]);
@ -93,6 +93,30 @@ array_uint16_be (const unsigned char data[]);
unsigned short
array_uint16_le (const unsigned char data[]);
void
array_uint64_be_set (unsigned char data[], const unsigned long long input);
void
array_uint64_le_set (unsigned char data[], const unsigned long long input);
void
array_uint32_be_set (unsigned char data[], const unsigned int input);
void
array_uint32_le_set (unsigned char data[], const unsigned int input);
void
array_uint24_be_set (unsigned char data[], const unsigned int input);
void
array_uint24_le_set (unsigned char data[], const unsigned int input);
void
array_uint16_be_set (unsigned char data[], const unsigned short input);
void
array_uint16_le_set (unsigned char data[], const unsigned short input);
unsigned char
bcd2dec (unsigned char value);