scp_decimal (Group project, 4 members)

My part of the project

My part was to make

• Makefile
• tests (generated with C#) for all the functions, except converting
• scp_div, scp_truncate functions
• comparison functions

So for my code you can check files

• Makefile
• tests
• scp_div
• scp_truncate
• comparison functions

Score:

The final score is 97% (max is 100%)

Functional tests failed for the function scp_from_float_to_decimal.

Task

Development of Decimal type (96-bit).

Example:

typedef struct 
{
    int bits[4];
} scp_decimal;

Arithmetic Functions

int scp_add(scp_decimal value_1, scp_decimal value_2, scp_decimal *result)
int scp_sub(scp_decimal value_1, scp_decimal value_2, scp_decimal *result)
int scp_mul(scp_decimal value_1, scp_decimal value_2, scp_decimal *result)
int scp_div(scp_decimal value_1, scp_decimal value_2, scp_decimal *result)

The functions return the error code:

• 0 - OK
• 1 - the number is too large or equal to infinity
• 2 - the number is too small or equal to negative infinity
• 3 - division by 0

Comparison Functions

int scp_is_less(scp_decimal, scp_decimal)             
int scp_is_less_or_equal(scp_decimal, scp_decimal)    
int scp_is_greater(scp_decimal, scp_decimal)          
int scp_is_greater_or_equal(scp_decimal, scp_decimal) 
int scp_is_equal(scp_decimal, scp_decimal)            
int scp_is_not_equal(scp_decimal, scp_decimal)        

Return value:

• 0 - FALSE
• 1 - TRUE

Convertors and parsers

int scp_from_int_to_decimal(int src, scp_decimal *dst)     
int scp_from_float_to_decimal(float src, scp_decimal *dst) 
int scp_from_decimal_to_int(scp_decimal src, int *dst)     
int scp_from_decimal_to_float(scp_decimal src, float *dst) 

Return value - code error:

• 0 - OK
• 1 - convertation error

Another functions

int scp_floor(scp_decimal value, scp_decimal *result)    
int scp_round(scp_decimal value, scp_decimal *result)    
int scp_truncate(scp_decimal value, scp_decimal *result) 
int scp_negate(scp_decimal value, scp_decimal *result)   

Return value - code error:

• 0 - OK
• 1 - calculation error