inline void mp_sub434_p2()

in src/P434/AMD64/fp_x64.c [18:37]

• 15 lines of code
• 7 McCabe index (conditional complexity)

inline void mp_sub434_p2(const digit_t* a, const digit_t* b, digit_t* c)
{ // Multiprecision subtraction with correction with 2*p, c = a-b+2p.    
#if (OS_TARGET == OS_WIN) || defined(GENERIC_IMPLEMENTATION) || (TARGET == TARGET_ARM) || (TARGET == TARGET_ARM64 && NBITS_FIELD == 610)
    unsigned int i, borrow = 0;

    for (i = 0; i < NWORDS_FIELD; i++) {
        SUBC(borrow, a[i], b[i], borrow, c[i]); 
    }

    borrow = 0;
    for (i = 0; i < NWORDS_FIELD; i++) {
        ADDC(borrow, c[i], ((digit_t*)p434x2)[i], borrow, c[i]); 
    }
    
#elif (OS_TARGET == OS_NIX)                 
    
    mp_sub434_p2_asm(a, b, c);    

#endif
}