diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/cmd/gc/const.c | 17 |
1 files changed, 11 insertions, 6 deletions
diff --git a/src/cmd/gc/const.c b/src/cmd/gc/const.c index 5dbacece7e..33acec6fc4 100644 --- a/src/cmd/gc/const.c +++ b/src/cmd/gc/const.c @@ -13,16 +13,20 @@ static Val copyval(Val); /* * truncate float literal fv to 32-bit or 64-bit precision - * according to type. + * according to type; return truncated value. */ -void -truncfltlit(Mpflt *fv, Type *t) +Mpflt* +truncfltlit(Mpflt *oldv, Type *t) { double d; float f; + Mpflt *fv; if(t == T) - return; + return oldv; + + fv = mal(sizeof *fv); + *fv = *oldv; // convert large precision literal floating // into limited precision (float64 or float32) @@ -41,6 +45,7 @@ truncfltlit(Mpflt *fv, Type *t) mpmovecflt(fv, d); break; } + return fv; } /* @@ -154,7 +159,7 @@ convlit1(Node *n, Type *t, int explicit) else if(ct != CTFLT) goto bad; overflow(n->val, t); - truncfltlit(n->val.u.fval, t); + n->val.u.fval = truncfltlit(n->val.u.fval, t); } else if(et == TSTRING && ct == CTINT && explicit) n->val = tostr(n->val); else @@ -607,7 +612,7 @@ ret: // truncate precision for non-ideal float. if(v.ctype == CTFLT && n->type->etype != TIDEAL) - truncfltlit(v.u.fval, n->type); + n->val.u.fval = truncfltlit(v.u.fval, n->type); return; settrue: |