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cleaned up a bit, and made add_ext and sub_ext proper entry points,

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without preconditions on the arguments
This commit is contained in:
ceriel
1988-08-04 11:16:20 +00:00
parent 3d3b891371
commit 2d12b422e5
8 changed files with 122 additions and 125 deletions
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22
mach/proto/fp/adf4.c
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@@ -27,27 +27,7 @@ _float s1,s2;
}
extend((_double *)&s1,&e1,sizeof(SINGLE));
extend((_double *)&s2,&e2,sizeof(SINGLE));
/* if signs differ do subtraction */
/* result in e1 */
if (e1.sign ^ e2.sign) {
/* set sign of e1 to sign of largest */
swap = (e2.exp > e1.exp) ? 1 : (e2.exp < e1.exp) ? 0 :
(e2.m1 > e1.m1 ) ? 1 : 0;
/* adjust mantissas to equal powers */
sft_ext(&e1,&e2);
/* subtract the extended formats */
if (swap) {
sub_ext(&e2,&e1);
e1 = e2;
}
else
sub_ext(&e1,&e2);
}
else {
/* adjust mantissas to equal powers */
sft_ext(&e1,&e2);
add_ext(&e1,&e2);
}
add_ext(&e1,&e2);
compact(&e1,(_double *)&s1,sizeof(SINGLE));
return(s1);
}