127 lines
3.0 KiB
C
127 lines
3.0 KiB
C
/*
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* $Id$
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*
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Copyright (c) 2016-2018 Chung, Hyung-Hwan. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "hcl-prv.h"
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static hcl_ooi_t equalize_scale (hcl_t* hcl, hcl_oop_fpdec_t x, hcl_oop_fpdec_t y)
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{
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hcl_ooi_t xs, ys;
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xs = HCL_OOP_TO_SMOOI(x->scale);
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ys = HCL_OOP_TO_SMOOI(y->scale);
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if (xs < ys)
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{
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/* TODO: don't change x or y. create new objects */
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x->scale = y->scale;
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hcl_pushtmp(hcl, &x);
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while (xs < ys)
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{
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x->value = hcl_mulints(hcl, x->value, HCL_SMOOI_TO_OOP(10));
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xs++;
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}
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hcl_poptmp(hcl);
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}
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else if (xs > ys)
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{
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y->scale = x->scale;
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hcl_pushtmp(hcl, &y);
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while (ys < xs)
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{
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y->value = hcl_mulints(hcl, y->value, HCL_SMOOI_TO_OOP(10));
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ys++;
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}
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hcl_poptmp(hcl);
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}
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return xs;
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}
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hcl_oop_t hcl_addnums (hcl_t* hcl, hcl_oop_t x, hcl_oop_t y)
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{
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if (HCL_IS_FPDEC(hcl, x))
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{
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if (HCL_IS_FPDEC(hcl, y))
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{
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hcl_oop_t v;
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hcl_ooi_t scale;
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/* TODO: error handling */
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hcl_pushtmp (hcl, &x);
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hcl_pushtmp (hcl, &y);
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scale = equalize_scale (hcl, x, y);
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v = hcl_addints(hcl, ((hcl_oop_fpdec_t)x)->value, ((hcl_oop_fpdec_t)y)->value);
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hcl_poptmps (hcl, 2);
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return hcl_makefpdec(hcl, v, scale);
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}
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else
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{
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}
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}
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else
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{
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if (HCL_IS_FPDEC(hcl, y))
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{
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}
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else
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{
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return hcl_addints(hcl, x, y);
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}
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}
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}
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hcl_oop_t hcl_subnums (hcl_t* hcl, hcl_oop_t x, hcl_oop_t y)
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{
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if (HCL_IS_FPDEC(hcl, x))
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{
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if (HCL_IS_FPDEC(hcl, y))
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{
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hcl_oop_t v;
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hcl_ooi_t scale;
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hcl_pushtmp (hcl, &x);
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hcl_pushtmp (hcl, &y);
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scale = equalize_scale (hcl, x, y);
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v = hcl_subints(hcl, ((hcl_oop_fpdec_t)x)->value, ((hcl_oop_fpdec_t)y)->value);
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hcl_poptmps (hcl, 2);
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return hcl_makefpdec(hcl, v, scale);
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}
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else
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{
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}
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}
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else
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{
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if (HCL_IS_FPDEC(hcl, y))
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{
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}
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else
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{
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return hcl_subints(hcl, x, y);
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}
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}
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}
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