179 #define ADD(to, from1, from2, carry)  /* assume carry <= 1 */           \  argument
182           dec1 a=(from1)+(from2)+(carry);                               \
189 #define ADD2(to, from1, from2, carry)                                   \  argument
192           dec2 a=((dec2)(from1))+(from2)+(carry);                       \
203 #define SUB(to, from1, from2, carry) /* to=from1-from2 */               \  argument
206           dec1 a=(from1)-(from2)-(carry);                               \
212 #define SUB2(to, from1, from2, carry) /* to=from1-from2 */              \  argument
215           dec1 a=(from1)-(from2)-(carry);                               \
1879 int decimal_result_size(decimal_t *from1, decimal_t *from2, char op, int param)  in decimal_result_size()  argument
1883     return ROUND_UP(MY_MAX(from1->intg, from2->intg)) +  in decimal_result_size()
1884            ROUND_UP(MY_MAX(from1->frac, from2->frac));  in decimal_result_size()
1886     return ROUND_UP(MY_MAX(from1->intg, from2->intg)+1) +  in decimal_result_size()
1887            ROUND_UP(MY_MAX(from1->frac, from2->frac));  in decimal_result_size()
1889     return ROUND_UP(from1->intg+from2->intg)+  in decimal_result_size()
1890            ROUND_UP(from1->frac)+ROUND_UP(from2->frac);  in decimal_result_size()
1892     return ROUND_UP(from1->intg+from2->intg+1+from1->frac+from2->frac+param);  in decimal_result_size()
1898 static int do_add(const decimal_t *from1, const decimal_t *from2, decimal_t *to)  in do_add()  argument
1900   int intg1=ROUND_UP(from1->intg), intg2=ROUND_UP(from2->intg),  in do_add()
1901       frac1=ROUND_UP(from1->frac), frac2=ROUND_UP(from2->frac),  in do_add()
1909     intg2 > intg1 ? from2->buf[0] :  in do_add()
1910     from1->buf[0] + from2->buf[0] ;  in do_add()
1927   to->frac= MY_MAX(from1->frac, from2->frac);  in do_add()
1943     buf2=from2->buf+intg2+frac2;  in do_add()
1948     buf1=from2->buf+intg2+frac2;  in do_add()
1949     stop=from2->buf+intg2+frac1;  in do_add()
1951     stop2=from2->buf+(intg2 > intg1 ? intg2-intg1 : 0);  in do_add()
1965                         ((stop=from2->buf)+intg2-intg1) ;  in do_add()
1980 static int do_sub(const decimal_t *from1, const decimal_t *from2, decimal_t *to)  in do_sub()  argument
1982   int intg1=ROUND_UP(from1->intg), intg2=ROUND_UP(from2->intg),  in do_sub()
1983       frac1=ROUND_UP(from1->frac), frac2=ROUND_UP(from2->frac);  in do_sub()
1989   start2=buf2=from2->buf; stop2=buf2+intg2;  in do_sub()
2049     swap_variables(const decimal_t *, from1, from2);  in do_sub()
2059   to->frac= MY_MAX(from1->frac, from2->frac);  in do_sub()
2122 int decimal_add(const decimal_t *from1, const decimal_t *from2, decimal_t *to)  in decimal_add()  argument
2124   if (likely(from1->sign == from2->sign))  in decimal_add()
2125     return do_add(from1, from2, to);  in decimal_add()
2126   return do_sub(from1, from2, to);  in decimal_add()
2129 int decimal_sub(const decimal_t *from1, const decimal_t *from2, decimal_t *to)  in decimal_sub()  argument
2131   if (likely(from1->sign == from2->sign))  in decimal_sub()
2132     return do_sub(from1, from2, to);  in decimal_sub()
2133   return do_add(from1, from2, to);  in decimal_sub()
2136 int decimal_cmp(const decimal_t *from1, const decimal_t *from2)  in decimal_cmp()  argument
2138   if (likely(from1->sign == from2->sign))  in decimal_cmp()
2139     return do_sub(from1, from2, 0);  in decimal_cmp()
2140   return from1->sign > from2->sign ? -1 : 1;  in decimal_cmp()
2174 int decimal_mul(const decimal_t *from1, const decimal_t *from2, decimal_t *to)  in decimal_mul()  argument
2176   int intg1=ROUND_UP(from1->intg), intg2=ROUND_UP(from2->intg),  in decimal_mul()
2177       frac1=ROUND_UP(from1->frac), frac2=ROUND_UP(from2->frac),  in decimal_mul()
2178       intg0=ROUND_UP(from1->intg+from2->intg),  in decimal_mul()
2180   dec1 *buf1=from1->buf+intg1, *buf2=from2->buf+intg2, *buf0,  in decimal_mul()
2188   to->sign= from1->sign != from2->sign;  in decimal_mul()
2189   to->frac= from1->frac + from2->frac;              /* store size in digits */  in decimal_mul()
2299 static int do_div_mod(const decimal_t *from1, const decimal_t *from2,  in do_div_mod()  argument
2303       frac2=ROUND_UP(from2->frac)*DIG_PER_DEC1, prec2=from2->intg+frac2,  in do_div_mod()
2305   dec1 *buf0, *buf1=from1->buf, *buf2=from2->buf, *tmp1,  in do_div_mod()
2343   if ((scale_incr-= frac1 - from1->frac + frac2 - from2->frac) < 0)  in do_div_mod()
2362     to->frac= MY_MAX(from1->frac, from2->frac);  in do_div_mod()
2379     to->sign=from1->sign != from2->sign;  in do_div_mod()
2527       DBUG_ASSERT(intg0 <= ROUND_UP(from2->intg));  in do_div_mod()
2529       to->intg= MY_MIN(intg0 * DIG_PER_DEC1, from2->intg);  in do_div_mod()
2568 decimal_div(const decimal_t *from1, const decimal_t *from2, decimal_t *to,  in decimal_div()  argument
2571   return do_div_mod(from1, from2, to, 0, scale_incr);  in decimal_div()
2601 int decimal_mod(const decimal_t *from1, const decimal_t *from2, decimal_t *to)  in decimal_mod()  argument
2603   return do_div_mod(from1, from2, 0, to, 0);  in decimal_mod()