mirror of
https://github.com/reactos/reactos.git
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295eaf4e32
- Added support for average of squares and mean of squares into statistical functions. - pop() and push() functions in RPN engines now work with nodes instead of stack units. - Moved the POW and SQR operations near the operators. CORE-12766 - Fix number of digits for IEEE-754 constants. - Show all available digits in exp notation. CORE-14871 - Update help correspondingly.
128 lines
3.7 KiB
C
128 lines
3.7 KiB
C
/*
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* ReactOS Calc (Utility functions for IEEE-754 engine)
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*
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* Copyright 2007-2017, Carlo Bramini
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "calc.h"
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void prepare_rpn_result_2(calc_number_t *rpn, TCHAR *buffer, int size, int base)
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{
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calc_number_t tmp;
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int width;
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switch (base) {
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case IDC_RADIO_HEX:
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_stprintf(buffer, _T("%I64X"), rpn->i);
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break;
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case IDC_RADIO_DEC:
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/*
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* Modified from 17 to 16 for fixing this bug:
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* 14+14+6.3+6.3= 40.5999999 instead of 40.6
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* So, it's probably better to leave the least
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* significant digit out of the display.
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*/
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#define MAX_LD_WIDTH 16
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/* calculate the width of integer number */
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width = (rpn->f==0) ? 1 : (int)log10(fabs(rpn->f))+1;
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if (calc.sci_out == TRUE || width > MAX_LD_WIDTH || width < -MAX_LD_WIDTH)
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_stprintf(buffer, _T("%#.*e"), MAX_LD_WIDTH-1, rpn->f);
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else {
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TCHAR *ptr, *dst;
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ptr = buffer + _stprintf(buffer, _T("%#*.*f"), width, ((MAX_LD_WIDTH-width-1)>=0) ? MAX_LD_WIDTH-width-1 : 0, rpn->f);
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/* format string ensures there is a '.': */
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dst = _tcschr(buffer, _T('.'));
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while (--ptr > dst)
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if (*ptr != _T('0'))
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break;
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/* put the string terminator for removing the final '0' (if any) */
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ptr[1] = _T('\0');
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/* check if the number finishes with '.' */
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if (ptr == dst)
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/* remove the dot (it will be re-added later) */
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ptr[0] = _T('\0');
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}
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#undef MAX_LD_WIDTH
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break;
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case IDC_RADIO_OCT:
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_stprintf(buffer, _T("%I64o"), rpn->i);
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break;
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case IDC_RADIO_BIN:
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if (rpn->i == 0) {
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buffer[0] = _T('0');
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buffer[1] = _T('\0');
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break;
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}
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tmp = *rpn;
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buffer[0] = _T('\0');
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while (tmp.u) {
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memmove(buffer+1, buffer, (size-1)*sizeof(TCHAR));
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if (tmp.u & 1)
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buffer[0] = _T('1');
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else
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buffer[0] = _T('0');
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tmp.u >>= 1;
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}
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break;
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}
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}
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void convert_text2number_2(calc_number_t *a)
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{
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TCHAR *ptr;
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switch (calc.base) {
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case IDC_RADIO_HEX:
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_stscanf(calc.buffer, _T("%I64X"), &(a->i));
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break;
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case IDC_RADIO_DEC:
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_stscanf(calc.buffer, _T("%lf"), &(a->f));
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break;
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case IDC_RADIO_OCT:
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_stscanf(calc.buffer, _T("%I64o"), &(a->i));
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break;
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case IDC_RADIO_BIN:
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ptr = calc.buffer;
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a->i = 0;
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while (*ptr != _T('\0')) {
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a->i <<= 1;
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if (*ptr++ == _T('1'))
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a->i |= 1;
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}
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break;
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}
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}
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void convert_real_integer(unsigned int base)
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{
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switch (base) {
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case IDC_RADIO_DEC:
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calc.code.f = (double)calc.code.i;
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break;
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case IDC_RADIO_OCT:
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case IDC_RADIO_BIN:
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case IDC_RADIO_HEX:
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if (calc.base == IDC_RADIO_DEC) {
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calc.code.i = (__int64)calc.code.f;
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apply_int_mask(&calc.code);
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}
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break;
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}
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}
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