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separate out set_exponent function

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Jeff Wang 2019-03-27 05:17:32 -04:00
parent 14251c91cb
commit a742bb2059
1 changed files with 11 additions and 11 deletions
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22
src/decn/decn.c
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@ -52,6 +52,15 @@ int16_t get_exponent(const dec80* x){
} }
} }
void set_exponent(dec80* acc, int16_t exponent, uint8_t num_is_neg){
if (num_is_neg){
exponent |= 0x8000;
} else {
exponent &= 0x7fff;
}
acc->exponent = exponent;
}
static void zero_remaining_dec80(dec80* dest, uint8_t digit100){ static void zero_remaining_dec80(dec80* dest, uint8_t digit100){
for ( ; digit100 < DEC80_NUM_LSU; digit100++){ for ( ; digit100 < DEC80_NUM_LSU; digit100++){
@ -259,12 +268,7 @@ void build_dec80(dec80* dest, const char* signif_str, int16_t exponent){
} }
exponent = new_exponent; exponent = new_exponent;
//set negative bit //set negative bit
if (IS_NEG(curr_sign)){ set_exponent(dest, exponent, IS_NEG(curr_sign));
exponent |= 0x8000;
} else {
exponent &= 0x7fff;
}
dest->exponent = exponent;
#ifdef DEBUG #ifdef DEBUG
printf(" num_lr_points (%d), new_exp (%d), sign (%d), exp (%d)\n", printf(" num_lr_points (%d), new_exp (%d), sign (%d), exp (%d)\n",
num_lr_points, new_exponent, curr_sign, exponent); num_lr_points, new_exponent, curr_sign, exponent);
@ -581,11 +585,7 @@ void add_decn(dec80* acc, const dec80* x){
curr_exp+=2; curr_exp+=2;
} }
//track sign //track sign
if (rel){ //is_neg set_exponent(acc, curr_exp, rel); //rel==is_neg?
acc->exponent = curr_exp | 0x8000;
} else {
acc->exponent = curr_exp | 0x7fff;
}
} }
} }