cdesktopenv/cde/programs/dtcalc/functions.c

1990 lines
52 KiB
C

/*
* CDE - Common Desktop Environment
*
* Copyright (c) 1993-2012, The Open Group. All rights reserved.
*
* These libraries and programs are free software; you can
* redistribute them and/or modify them under the terms of the GNU
* Lesser General Public License as published by the Free Software
* Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* These libraries and programs are distributed in the hope that
* they will be useful, but WITHOUT ANY WARRANTY; without even the
* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
* PURPOSE. See the GNU Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with these librararies and programs; if not, write
* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
* Floor, Boston, MA 02110-1301 USA
*/
/* $XConsortium: functions.c /main/6 1996/09/25 09:36:28 mustafa $ */
/* *
* functions.c *
* Contains the many of the functions (i.e. do_*) which actually do *
* (at least start) the calculations. *
* *
* (c) Copyright 1993, 1994 Hewlett-Packard Company *
* (c) Copyright 1993, 1994 International Business Machines Corp. *
* (c) Copyright 1993, 1994 Sun Microsystems, Inc. *
* (c) Copyright 1993, 1994 Novell, Inc. *
*/
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <string.h>
#include <math.h>
#include "calctool.h"
extern char *base_str[] ; /* Strings for each base value. */
extern char *dtype_str[] ; /* Strings for each display mode value. */
extern char *mode_str[] ; /* Strings for each mode value. */
extern char *ttype_str[] ; /* Strings for each trig type value. */
extern char *vstrs[] ; /* Various strings. */
extern struct button buttons[] ; /* Calculator button values. */
extern struct button mode_buttons[] ; /* Special "mode" buttons. */
extern struct menu_entry menu_entries[] ; /* All the menu strings. */
extern Vars v ; /* Calctool variables and options. */
double mods[] = { 1.0, 1.0e-1, 1.0e-2, 1.0e-3, 1.0e-4,
1.0e-5, 1.0e-6, 1.0e-7, 1.0e-8, 1.0e-9,
1.0e-10, 1.0e-11, 1.0e-12, 1.0e-13, 1.0e-14,
1.0e-15, 1.0e-16, 1.0e-17, 1.0e-18, 1.0e-19 };
void
do_accuracy() /* Set display accuracy. */
{
int i ;
for (i = ACC_START; i <= ACC_END; i++)
if (v->current == menu_entries[i].val)
{
v->accuracy = char_val(v->current) ;
make_registers(MEM) ;
make_registers(FIN) ;
return ;
}
}
void
do_ascii() /* Convert ASCII value. */
{
int val ;
show_ascii_frame() ;
}
void
do_base() /* Change the current base setting. */
{
if (v->current == BASE_BIN) v->base = BIN ;
else if (v->current == BASE_OCT) v->base = OCT ;
else if (v->current == BASE_DEC) v->base = DEC ;
else if (v->current == BASE_HEX) v->base = HEX ;
else return ;
set_base(v->base) ;
}
void
set_base(base)
enum base_type base ;
{
grey_buttons(v->base) ;
show_display(v->MPdisp_val) ;
set_option_menu((int) BASEITEM, (int)v->base);
v->pending = 0 ;
if (v->rstate) make_registers(MEM) ;
if (v->frstate) make_registers(FIN) ;
}
void
do_business() /* Perform special business mode calculations. */
{
Boolean need_show = TRUE;
char *display_number = NULL;
int MPbv[MP_SIZE], MP1[MP_SIZE], MP2[MP_SIZE], MP3[MP_SIZE], MP4[MP_SIZE] ;
int MP5[MP_SIZE];
int i, len, val, val2, accSav ;
double result, w;
if (IS_KEY(v->current, KEY_CTRM))
{
/* Cterm - FMEM1 = int (periodic interest rate).
* FMEM2 = Pv (present value).
* FMEM4 = Fv (future value).
*
* RESULT = log(FMEM4 / FMEM2) / log(1 + FMEM1)
*/
if(v->MPfvals[1] == 0.0 || v->MPfvals[2] == 0.0 || v->MPfvals[4] == 0.0)
{
char *errorMsg, *tmp;
/* want to undraw the button first */
draw_button(19, 0, 4, 3, FALSE);
errorMsg = GETMESSAGE(5, 7, "Can't calculate 'Compound Term'\nwithout a non zero interest rate,\na non zero Present value, and\na non zero Future value.\n");
tmp = XtNewString(errorMsg);
ErrorDialog(tmp);
XtFree(tmp);
}
else
{
v->error = False;
result = log(v->MPfvals[4] / v->MPfvals[2]) / log(1.0 + (v->MPfvals[1] / 1200));
if(!v->error)
{
mpcdm(&result, v->MPdisp_val) ;
make_registers(FIN) ;
v->funstate = 1;
}
}
}
else if (IS_KEY(v->current, KEY_DDB))
{
/* Ddb - MEM0 = cost (amount paid for asset).
* MEM1 = salvage (value of asset at end of its life).
* MEM2 = life (useful life of the asset).
* MEM3 = period (time period for depreciation allowance).
*
* bv = 0.0 ;
* for (i = 0; i < MEM3; i++)
* {
* VAL = ((MEM0 - bv) * 2) / MEM2
* bv += VAL
* }
* RESULT = VAL
*/
i = 0 ;
mpcim(&i, MPbv) ;
mpcmi(v->MPmvals[3], &len) ;
for (i = 0; i < len; i++)
{
mpsub(v->MPmvals[0], MPbv, MP1) ;
val = 2 ;
mpmuli(MP1, &val, MP2) ;
mpdiv(MP2, v->MPmvals[2], v->MPdisp_val) ;
mpstr(MPbv, MP1) ;
mpadd(MP1, v->MPdisp_val, MPbv) ;
}
}
else if (IS_KEY(v->current, KEY_FV))
{
/* Fv - FMEM3 = pmt (periodic payment).
* FMEM1 = int (periodic interest rate).
* FMEM2 = Pv (present value).
* FMEM0 = n (number of periods).
*
*/
if(v->MPfvals[0] == 0.0 || v->MPfvals[1] == 0.0 ||
(v->MPfvals[2] == 0.0 && v->MPfvals[3] == 0.0) || v->funstate == 0)
{
if(v->funstate == 1)
{
v->funstate = 0;
doerr(GETMESSAGE(5, 2, "ERROR: No Solution"));
return;
}
else
/* set FV register */
mpcmd(v->MPdisp_val, &(v->MPfvals[4]));
}
else
{
if ((w = 1.0 + v->MPfvals[1] / (v->MPfvals[5] * 100.0)) == 1.0)
result = -(v->MPfvals[2] + v->MPfvals[0] * v->MPfvals[3]);
else
result = -(v->MPfvals[2] * pow(w, v->MPfvals[0]) +
v->MPfvals[3] * (pow(w, v->MPfvals[0]) - 1.0) *
pow(w, 0.0) / (w - 1.0));
mpcdm(&result, v->MPdisp_val) ;
}
if(strcmp(v->display, GETMESSAGE(3, 364, "Error")) != 0)
mpcmd(v->MPdisp_val, &(v->MPfvals[4]));
make_registers(FIN) ;
v->funstate = 1;
}
else if (IS_KEY(v->current, KEY_PMT))
{
/* Pmt - FMEM0 = prin (principal).
* FMEM1 = int (periodic interest rate).
* FMEM2 = n (term).
*
* RESULT = FMEM0 * (FMEM1 / (1 - pow(FMEM1 + 1, -1 * FMEM2)))
*/
if(v->MPfvals[0] == 0.0 || v->MPfvals[1] == 0.0 ||
(v->MPfvals[2] == 0.0 && v->MPfvals[4] == 0.0) || v->funstate == 0)
{
if(v->funstate == 1)
{
v->funstate = 0;
doerr(GETMESSAGE(5, 2, "ERROR: No Solution"));
return;
}
else
/* set Payment register */
mpcmd(v->MPdisp_val, &(v->MPfvals[3]));
}
else
{
if ((w = 1.0 + v->MPfvals[1] / (v->MPfvals[5] * 100.0)) == 1.0)
result = -(v->MPfvals[4] + v->MPfvals[2]) / v->MPfvals[0];
else
result = -(v->MPfvals[2] * pow(w, v->MPfvals[0]) +
v->MPfvals[4]) * (w - 1.0) /
((pow(w, v->MPfvals[0]) - 1.0) * pow(w, 0.0));
mpcdm(&result, v->MPdisp_val) ;
}
if(strcmp(v->display, GETMESSAGE(3, 364, "Error")) != 0)
mpcmd(v->MPdisp_val, &(v->MPfvals[3]));
make_registers(FIN) ;
v->funstate = 1;
}
else if (IS_KEY(v->current, KEY_PV))
{
/* Pv - FMEM0 = pmt (periodic payment).
* FMEM1 = int (periodic interest rate).
* FMEM2 = n (term).
*
* RESULT = FMEM0 * (1 - pow(1 + FMEM1, -1 * FMEM2)) / FMEM1
*/
if(v->MPfvals[0] == 0.0 || v->MPfvals[1] == 0.0 || v->MPfvals[3] == 0.0 || v->funstate == 0)
{
if(v->funstate == 1)
{
v->funstate = 0;
doerr(GETMESSAGE(5, 2, "ERROR: No Solution"));
return;
}
else
/* set PV register */
mpcmd(v->MPdisp_val, &(v->MPfvals[2]));
}
else
{
if ((w = 1.0 + v->MPfvals[1] / (v->MPfvals[5] * 100.0)) == 1.0)
result = -(v->MPfvals[4] + v->MPfvals[0] * v->MPfvals[3]);
else
result = -(v->MPfvals[4] / pow(w, v->MPfvals[0]) +
v->MPfvals[3] * (pow(w, v->MPfvals[0]) - 1.0) *
pow(w, 0.0 - v->MPfvals[0]) / (w - 1.0));
mpcdm(&result, v->MPdisp_val) ;
}
if(strcmp(v->display, GETMESSAGE(3, 364, "Error")) != 0)
mpcmd(v->MPdisp_val, &(v->MPfvals[2]));
make_registers(FIN) ;
v->funstate = 1;
}
else if (IS_KEY(v->current, KEY_RATE))
{
/* Rate - MEM0 = fv (future value).
* MEM1 = pv (present value).
* MEM2 = n (term).
*
* RESULT = pow(MEM0 / MEM1, 1 / MEM2) - 1
*/
if(v->MPfvals[0] == 0.0 || (v->MPfvals[2] == 0.0 && v->MPfvals[3] == 0.0)
|| (v->MPfvals[3] == 0.0 && v->MPfvals[4] == 0.0)
|| v->funstate == 0)
{
if(v->funstate == 1)
{
v->funstate = 0;
doerr(GETMESSAGE(5, 2, "ERROR: No Solution"));
return;
}
else
{
accSav = v->accuracy;
v->accuracy = 2;
display_number = make_number(v->MPdisp_val, FALSE);
MPstr_to_num(display_number, DEC, v->MPdisp_val);
/* set RATE register */
mpcmd(v->MPdisp_val, &(v->MPfvals[1]));
v->accuracy = accSav;
}
}
else
{
compute_i(&(v->MPfvals[1]));
mpcdm(&(v->MPfvals[1]), v->MPdisp_val);
accSav = v->accuracy;
v->accuracy = 2;
display_number = make_number(v->MPdisp_val, FALSE);
MPstr_to_num(display_number, DEC, v->MPdisp_val);
v->accuracy = accSav;
}
if(!v->error)
make_registers(FIN) ;
v->funstate = 1;
STRCPY(v->display, display_number);
set_item(DISPLAYITEM, v->display);
need_show = FALSE;
}
else if (IS_KEY(v->current, KEY_SLN))
{
/* Sln - MEM0 = cost (cost of the asset).
* MEM1 = salvage (salvage value of the asset).
* MEM2 = life (useful life of the asset).
*
* RESULT = (MEM0 - MEM1) / MEM2
*/
mpsub(v->MPmvals[0], v->MPmvals[1], MP1) ;
mpdiv(MP1, v->MPmvals[2], v->MPdisp_val) ;
}
else if (IS_KEY(v->current, KEY_SYD))
{
/* Syd - MEM0 = cost (cost of the asset).
* MEM1 = salvage (salvage value of the asset).
* MEM2 = life (useful life of the asset).
* MEM3 = period (period for which depreciation is computed).
*
* RESULT = ((MEM0 - MEM1) * (MEM2 - MEM3 + 1)) /
* (MEM2 * (MEM2 + 1) / 2)
*/
mpsub(v->MPmvals[2], v->MPmvals[3], MP2) ;
val = 1 ;
mpaddi(MP2, &val, MP3) ;
mpaddi(v->MPmvals[2], &val, MP2) ;
mpmul(v->MPmvals[2], MP2, MP4) ;
val = 2 ;
mpcim(&val, MP2) ;
mpdiv(MP4, MP2, MP1) ;
mpdiv(MP3, MP1, MP2) ;
mpsub(v->MPmvals[0], v->MPmvals[1], MP1) ;
mpmul(MP1, MP2, v->MPdisp_val) ;
}
else if (IS_KEY(v->current, KEY_TERM))
{
/* Term - FMEM0 = pmt (periodic payment).
* FMEM1 = fv (future value).
* FMEM2 = int (periodic interest rate).
*
* RESULT = log(1 + (FMEM1 * FMEM2 / FMEM0)) / log(1 + FMEM2)
*/
if(v->MPfvals[1] == 0.0 || (v->MPfvals[2] == 0.0 && v->MPfvals[4] == 0)
|| v->MPfvals[3] == 0.0 || v->funstate == 0)
{
if(v->funstate == 1)
{
v->funstate = 0;
doerr(GETMESSAGE(5, 2, "ERROR: No Solution"));
return;
}
else
/* set Term register */
mpcmd(v->MPdisp_val, &(v->MPfvals[0]));
}
else
{
if ((w = 1.0 + v->MPfvals[1] / (v->MPfvals[5] * 100.0)) == 1.0)
result = -(v->MPfvals[4] + v->MPfvals[2]) / v->MPfvals[3];
else
{
double wdb = pow(w, 0.0);
result = log((v->MPfvals[3] * wdb / (w - 1.0) - v->MPfvals[4]) /
(v->MPfvals[2] * pow(w, 0.0) + v->MPfvals[3] * wdb /
(w - 1.0))) / log(w);
}
if(strcmp(v->display, GETMESSAGE(3, 364, "Error")) != 0)
mpcdm(&result, v->MPdisp_val) ;
}
if(strcmp(v->display, GETMESSAGE(3, 364, "Error")) != 0)
mpcmd(v->MPdisp_val, &(v->MPfvals[0]));
make_registers(FIN) ;
v->funstate = 1;
}
else if (IS_KEY(v->current, KEY_PYR))
{
mpcmd(v->MPdisp_val, &(v->MPfvals[5]));
result = do_round(v->MPfvals[5], 0);
if (result < 1.0)
v->MPfvals[5] = 1.0;
else
v->MPfvals[5] = result;
make_registers(FIN) ;
v->funstate = 1;
}
else if (IS_KEY(v->current, KEY_FCLR))
{
int zero = 0;
mpcim(&zero, MP1) ;
/* clear Term register */
mpcmd(MP1, &(v->MPfvals[0])) ;
/* clear %/YR register */
mpcmd(MP1, &(v->MPfvals[1])) ;
/* clear PV register */
mpcmd(MP1, &(v->MPfvals[2])) ;
/* clear Payment register */
mpcmd(MP1, &(v->MPfvals[3])) ;
/* clear FV register */
mpcmd(MP1, &(v->MPfvals[4])) ;
zero = 12;
mpcim(&zero, MP1) ;
mpcmd(MP1, &(v->MPfvals[5])) ;
make_registers(FIN);
}
if (need_show == TRUE)
show_display(v->MPdisp_val) ;
return;
}
void
do_calc() /* Perform arithmetic calculation and display result. */
{
double dval, dres ;
int MP1[MP_SIZE] ;
/* the financial state is false - last key was not a fin. key */
v->funstate = 0;
if (!(v->opsptr && !v->show_paren)) /* Don't do if processing parens. */
if (IS_KEY(v->current, KEY_EQ) && IS_KEY(v->old_cal_value, KEY_EQ))
if (v->new_input)
mpstr(v->MPdisp_val, v->MPresult) ;
else
mpstr(v->MPlast_input, v->MPdisp_val) ;
if (!IS_KEY(v->current, KEY_EQ) && IS_KEY(v->old_cal_value, KEY_EQ))
v->cur_op = '?' ;
if (IS_KEY(v->cur_op, KEY_COS) || /* Cos */
IS_KEY(v->cur_op, KEY_SIN) || /* Sin */
IS_KEY(v->cur_op, KEY_TAN) || /* Tan */
v->cur_op == '?') /* Undefined */
mpstr(v->MPdisp_val, v->MPresult) ;
else if (IS_KEY(v->cur_op, KEY_ADD)) /* Addition */
mpadd(v->MPresult, v->MPdisp_val, v->MPresult) ;
else if (IS_KEY(v->cur_op, KEY_SUB)) /* Subtraction. */
mpsub(v->MPresult, v->MPdisp_val, v->MPresult) ;
else if (v->cur_op == '*' ||
IS_KEY(v->cur_op, KEY_MUL)) /* Multiplication */
mpmul(v->MPresult, v->MPdisp_val, v->MPresult) ;
else if (IS_KEY(v->cur_op, KEY_DIV)) /* Division. */
mpdiv(v->MPresult, v->MPdisp_val, v->MPresult) ;
else if (IS_KEY(v->cur_op, KEY_PER)) /* % */
{
mpmul(v->MPresult, v->MPdisp_val, v->MPresult) ;
MPstr_to_num("0.01", DEC, MP1) ;
mpmul(v->MPresult, MP1, v->MPresult) ;
}
else if (IS_KEY(v->cur_op, KEY_YTOX)) /* y^x */
mppwr2(v->MPresult, v->MPdisp_val, v->MPresult) ;
else if (IS_KEY(v->cur_op, KEY_AND)) /* And */
{
mpcmd(v->MPresult, &dres) ;
mpcmd(v->MPdisp_val, &dval) ;
dres = setbool((BOOLEAN)(ibool(dres) & ibool(dval))) ;
mpcdm(&dres, v->MPresult) ;
}
else if (IS_KEY(v->cur_op, KEY_OR)) /* Or */
{
mpcmd(v->MPresult, &dres) ;
mpcmd(v->MPdisp_val, &dval) ;
dres = setbool((BOOLEAN)(ibool(dres) | ibool(dval))) ;
mpcdm(&dres, v->MPresult) ;
}
else if (IS_KEY(v->cur_op, KEY_XOR)) /* Xor */
{
mpcmd(v->MPresult, &dres) ;
mpcmd(v->MPdisp_val, &dval) ;
dres = setbool((BOOLEAN)(ibool(dres) ^ ibool(dval))) ;
mpcdm(&dres, v->MPresult) ;
}
else if (IS_KEY(v->cur_op, KEY_XNOR)) /* Xnor */
{
mpcmd(v->MPresult, &dres) ;
mpcmd(v->MPdisp_val, &dval) ;
dres = setbool((BOOLEAN)(~ibool(dres) ^ ibool(dval))) ;
mpcdm(&dres, v->MPresult) ;
}
else if (IS_KEY(v->cur_op, KEY_EQ)) /* do nothing. */ ; /* Equals */
show_display(v->MPresult) ;
if (!(IS_KEY(v->current, KEY_EQ) && IS_KEY(v->old_cal_value, KEY_EQ)))
mpstr(v->MPdisp_val, v->MPlast_input) ;
mpstr(v->MPresult, v->MPdisp_val) ;
v->cur_op = v->current ;
v->old_cal_value = v->current ;
v->new_input = v->key_exp = 0 ;
}
void
do_clear() /* Clear the calculator display and re-initialise. */
{
clear_display() ;
if (v->error) set_item(DISPLAYITEM, "") ;
initialise() ;
}
void
do_constant()
{
if (v->current >= '0' && v->current <= '9')
{
mpstr(v->MPcon_vals[char_val(v->current)], v->MPdisp_val) ;
show_display(v->MPdisp_val) ;
}
}
void
do_delete() /* Remove the last numeric character typed. */
{
if (strlen(v->display))
v->display[strlen(v->display)-1] = '\0' ;
/* If we were entering a scientific number, and we have backspaced over
* the exponent sign, then this reverts to entering a fixed point number.
*/
if (v->key_exp && !(strchr(v->display, '+')))
{
v->key_exp = 0 ;
v->display[strlen(v->display)-1] = '\0' ;
set_item(OPITEM, "") ;
}
/* If we've backspaced over the numeric point, clear the pointed flag. */
if (v->pointed && !(strchr(v->display, '.'))) v->pointed = 0 ;
if(strcmp(v->display, "") == 0)
do_clear();
set_item(DISPLAYITEM, v->display) ;
MPstr_to_num(v->display, v->base, v->MPdisp_val) ;
}
void
do_exchange() /* Exchange display with memory register. */
{
int i, MPtemp[MP_SIZE] ;
for (i = MEM_START; i <= MEM_END; i++)
if (v->current == menu_entries[i].val)
{
mpstr(v->MPdisp_val, MPtemp) ;
mpstr(v->MPmvals[char_val(v->current)], v->MPdisp_val) ;
mpstr(MPtemp, v->MPmvals[char_val(v->current)]) ;
make_registers(MEM) ;
return ;
}
}
void
do_expno() /* Get exponential number. */
{
/* the financial state is false - last key was not a fin. key */
v->funstate = 0;
v->pointed = (strchr(v->display, '.') != NULL) ;
if (!v->new_input)
{
STRCPY(v->display, "1.0 +") ;
v->new_input = v->pointed = 1 ;
}
else if (!v->pointed)
{
STRNCAT(v->display, ". +", 3) ;
v->pointed = 1 ;
}
else if (!v->key_exp) STRNCAT(v->display, " +", 2) ;
v->toclear = 0 ;
v->key_exp = 1 ;
v->exp_posn = strchr(v->display, '+') ;
set_item(DISPLAYITEM, v->display) ;
MPstr_to_num(v->display, v->base, v->MPdisp_val) ;
}
void
do_factorial(MPval, MPres) /* Calculate the factorial of MPval. */
int *MPval, *MPres ;
{
double val ;
int i, MPa[MP_SIZE], MP1[MP_SIZE], MP2[MP_SIZE] ;
/* NOTE: do_factorial, on each iteration of the loop, will attempt to
* convert the current result to a double. If v->error is set,
* then we've overflowed. This is to provide the same look&feel
* as V3.
*
* XXX: Needs to be improved. Shouldn't need to convert to a double in
* order to check this.
*/
mpstr(MPval, MPa) ;
mpcmim(MPval, MP1) ;
i = 0 ;
mpcim(&i, MP2) ;
if (mpeq(MPval, MP1) && mpge(MPval, MP2)) /* Only positive integers. */
{
i = 1 ;
if (mpeq(MP1, MP2)) /* Special case for 0! */
{
mpcim(&i, MPres) ;
return ;
}
mpcim(&i, MPa) ;
mpcmi(MP1, &i) ;
if (!i) matherr((struct exception *) NULL) ;
else
while (i > 0)
{
mpmuli(MPa, &i, MPa) ;
mpcmd(MPa, &val) ;
if (v->error) break ;
i-- ;
}
}
else matherr((struct exception *) NULL) ;
mpstr(MPa, MPres) ;
}
void
do_frame() /* Exit dtcalc. */
{
exit(0) ;
}
void
do_function() /* Perform a user defined function. */
{
enum fcp_type scurwin ;
int fno, scolumn, srow ;
srow = v->row ;
scolumn = v->column ;
scurwin = v->curwin ;
v->pending = 0 ;
if (v->current >= '0' && v->current <= '9')
{
fno = char_val(v->current) ;
if(strcmp(v->fun_vals[fno], "") != 0)
process_str(v->fun_vals[fno], M_FUN) ;
}
v->curwin = scurwin ;
v->row = srow ;
v->column = scolumn ;
}
void
do_immed()
{
double dval, dval2 ;
int i, MP1[MP_SIZE], MP2[MP_SIZE] ;
/* the financial state is false - last key was not a fin. key */
v->funstate = 0;
if (IS_KEY(v->current, KEY_HYP)) /* Hyp */
{
v->hyperbolic = !v->hyperbolic ;
set_item(HYPITEM, (v->hyperbolic) ? vstrs[(int) V_HYP]
: " ") ;
}
else if (IS_KEY(v->current, KEY_INV)) /* Inv */
{
v->inverse = !v->inverse ;
set_item(INVITEM, (v->inverse) ? vstrs[(int) V_INV]
: " ") ;
}
else if (IS_KEY(v->current, KEY_32)) /* &32 */
{
mpcmd(v->MPdisp_val, &dval) ;
dval2 = ibool2(dval);
if(dval2 == 0)
doerr(GETMESSAGE(5, 6, "ERR:Num too large for operation"));
else
{
dval = setbool((BOOLEAN)dval2) ;
mpcdm(&dval, v->MPdisp_val) ;
}
}
else if (IS_KEY(v->current, KEY_16)) /* &16 */
{
mpcmd(v->MPdisp_val, &dval) ;
dval2 = ibool2(dval);
if(dval2 == 0)
doerr(GETMESSAGE(5, 6, "ERR:Num too large for operation"));
else
{
dval = setbool((BOOLEAN)(ibool(dval2) & 0xffff)) ;
mpcdm(&dval, v->MPdisp_val) ;
}
}
else if (IS_KEY(v->current, KEY_ETOX)) /* e^x */
{
mpstr(v->MPdisp_val, MP1) ;
mpexp(MP1, v->MPdisp_val) ;
}
else if (IS_KEY(v->current, KEY_TTOX)) /* 10^x */
{
i = 10 ;
mpcim(&i, MP1) ;
mppwr2(MP1, v->MPdisp_val, v->MPdisp_val) ;
}
else if (IS_KEY(v->current, KEY_LN)) /* Ln */
{
mpstr(v->MPdisp_val, MP1) ;
mpln(MP1, v->MPdisp_val) ;
}
else if (IS_KEY(v->current, KEY_LOG)) /* Log */
{
mplog10(v->MPdisp_val, v->MPdisp_val) ;
}
else if (IS_KEY(v->current, KEY_RAND)) /* Rand */
{
dval = drand48() ;
mpcdm(&dval, v->MPdisp_val) ;
}
else if (IS_KEY(v->current, KEY_SQRT)) /* Sqrt */
{
mpstr(v->MPdisp_val, MP1) ;
mpsqrt(MP1, v->MPdisp_val) ;
}
else if (IS_KEY(v->current, KEY_NOT)) /* Not */
{
mpcmd(v->MPdisp_val, &dval) ;
dval = setbool((BOOLEAN)~ibool(dval)) ;
mpcdm(&dval, v->MPdisp_val) ;
}
else if (IS_KEY(v->current, KEY_REC)) /* 1/x */
{
i = 1 ;
mpcim(&i, MP1) ;
mpstr(v->MPdisp_val, MP2) ;
mpdiv(MP1, MP2, v->MPdisp_val) ;
}
else if (IS_KEY(v->current, KEY_FACT)) /* x! */
{
do_factorial(v->MPdisp_val, MP1) ;
mpstr(MP1, v->MPdisp_val) ;
}
else if (IS_KEY(v->current, KEY_SQR)) /* x^2 */
{
mpstr(v->MPdisp_val, MP1) ;
mpmul(MP1, MP1, v->MPdisp_val) ;
}
else if (IS_KEY(v->current, KEY_CHS)) /* +/- */
{
if (v->key_exp)
{
if (*v->exp_posn == '+') *v->exp_posn = '-' ;
else *v->exp_posn = '+' ;
set_item(DISPLAYITEM, v->display) ;
MPstr_to_num(v->display, v->base, v->MPdisp_val) ;
v->key_exp = 0 ;
}
else
{
mpneg(v->MPdisp_val, v->MPdisp_val) ;
mpstr(v->MPdisp_val, v->MPlast_input) ;
}
}
show_display(v->MPdisp_val) ;
}
void
do_keys() /* Display/undisplay the dtcalc key values. */
{
v->tstate = !v->tstate ;
redraw_buttons() ;
}
void
do_mode() /* Set special calculator mode. */
{
if (v->current == MODE_FIN) v->modetype = FINANCIAL ;
else if (v->current == MODE_LOG) v->modetype = LOGICAL ;
else if (v->current == MODE_SCI) v->modetype = SCIENTIFIC ;
make_modewin() ;
v->curwin = FCP_KEY ;
}
void
do_none() /* Null routine for empty buttons. */
{
}
void
do_number()
{
char nextchar ;
int len, n ;
static int maxvals[4] = { 1, 7, 9, 15 } ;
/* the financial state is false - last key was not a fin. key */
v->funstate = 0;
nextchar = v->current ;
n = v->current - '0' ;
if (v->base == HEX && v->current >= 'a' && v->current <= 'f')
{
nextchar -= 32 ; /* Convert to uppercase hex digit. */
n = v->current - 'a' + 10 ;
}
if (n > maxvals[(int) v->base])
{
beep() ;
return ;
}
if (v->toclear)
{
SPRINTF(v->display, "%c", nextchar) ;
v->toclear = 0 ;
}
else
{
len = strlen(v->display) ;
if (len < MAX_DIGITS)
{
v->display[len] = nextchar ;
v->display[len+1] = '\0' ;
}
else
beep() ;
}
set_item(DISPLAYITEM, v->display) ;
MPstr_to_num(v->display, v->base, v->MPdisp_val) ;
v->new_input = 1 ;
}
void
do_numtype() /* Set number type (engineering, fixed or scientific). */
{
if (v->current == DISP_ENG) v->dtype = ENG ;
else if (v->current == DISP_FIX) v->dtype = FIX ;
else if (v->current == DISP_SCI) v->dtype = SCI ;
else return ;
set_numtype(v->dtype);
}
set_numtype( dtype )
enum num_type dtype ;
{
v->pending = 0 ;
show_display(v->MPdisp_val) ;
set_option_menu((int) NUMITEM, (int)v->dtype);
if (v->rstate) make_registers(MEM) ;
if (v->frstate) make_registers(FIN) ;
}
void
do_paren()
{
char *ptr ;
double tmpdb;
/* the financial state is false - last key was not a fin. key */
v->funstate = 0;
/* Check to see if this is the first outstanding parenthesis. If so, and
* their is a current operation already defined, then add the current
* operation to the parenthesis expression being displayed.
* Increment parentheses count, and add the open paren to the expression.
*/
if (IS_KEY(v->current, KEY_LPAR))
{
if (v->noparens == 0)
{
/* if not in default state, put the operand between the display
value and the paren, else just put the paren */
if(!v->defState)
{
/* there is no paren, and there is no current operand ... Let's
make the current operand into a "x" */
if(v->cur_op == '?')
{
v->current = 'x';
do_calc();
}
/* if the current op is an '=' and the result in the display is
zero, we want to ignore the display */
if(v->cur_op == '=')
{
mpcmd(v->MPdisp_val, &tmpdb);
if(tmpdb == 0.0)
{
v->cur_op = '?';
STRCPY(v->display, "") ;
set_item(DISPLAYITEM, v->display) ;
}
else
{
v->current = 'x';
do_calc();
v->current = '(';
paren_disp(v->cur_op) ;
}
}
else
{
v->current = '(';
paren_disp(v->cur_op) ;
}
}
else
{
STRCPY(v->display, "") ;
set_item(DISPLAYITEM, v->display) ;
}
}
else
{
int len = strlen(v->display);
if(v->display[len - 1] >= '0' && v->display[len - 1] <= '9')
paren_disp(v->cur_op) ;
}
v->pending = v->current ;
v->noparens++ ;
}
/* If we haven't had any left brackets yet, and this is a right bracket,
* then just ignore it.
* Decrement the bracket count. If the count is zero, then process the
* parenthesis expression.
*/
else if (IS_KEY(v->current, KEY_RPAR))
{
if (!v->noparens) return ;
v->noparens-- ;
if (!v->noparens)
{
v->toclear = 1;
paren_disp(v->current) ;
ptr = v->display ;
while (*ptr != '(') ptr++ ;
while (*ptr != '\0') process_parens(*ptr++) ;
return ;
}
}
paren_disp(v->current) ;
}
void
do_pending()
{
/* the financial state is false - last key was not a fin. key */
v->funstate = 0;
/* Certain pending operations which are half completed, force the numeric
* keypad to be reshown (assuming they already aren't).
*
* Con, Exch, Fun, Sto, Rcl and Acc show buttons 0 - 9.
* < and > show buttons 0 - f.
*/
if (!v->ismenu)
{
if (IS_KEY(v->current, KEY_CON) || /* Con. */
IS_KEY(v->current, KEY_EXCH) || /* Exch. */
IS_KEY(v->current, KEY_FUN) || /* Fun. */
IS_KEY(v->current, KEY_STO) || /* Sto. */
IS_KEY(v->current, KEY_RCL) || /* Rcl. */
IS_KEY(v->current, KEY_ACC)) /* Acc. */
grey_buttons(DEC) ;
if (IS_KEY(v->current, KEY_LSFT) ||
IS_KEY(v->current, KEY_RSFT))
grey_buttons(HEX) ;
}
if (IS_KEY(v->pending, KEY_BASE)) do_base() ; /* Base */
else if (IS_KEY(v->pending, KEY_DISP)) do_numtype() ; /* Disp */
else if (IS_KEY(v->pending, KEY_TRIG)) do_trigtype() ; /* Trig */
else if (IS_KEY(v->pending, KEY_CON)) do_constant() ; /* Con */
else if (IS_KEY(v->pending, KEY_EXCH)) do_exchange() ; /* Exch */
else if (IS_KEY(v->pending, KEY_FUN)) do_function() ; /* Fun */
else if (IS_KEY(v->pending, KEY_STO) || /* Sto */
IS_KEY(v->pending, KEY_RCL)) /* Rcl */
{
do_sto_rcl() ;
if (IS_KEY(v->pending_op, KEY_ADD) ||
IS_KEY(v->pending_op, KEY_SUB) ||
IS_KEY(v->pending_op, KEY_MUL) ||
IS_KEY(v->pending_op, KEY_DIV)) return ;
}
else if (IS_KEY(v->pending, KEY_LSFT) || /* < */
IS_KEY(v->pending, KEY_RSFT)) do_shift() ; /* > */
else if (IS_KEY(v->pending, KEY_ACC)) do_accuracy() ; /* Acc */
else if (IS_KEY(v->pending, KEY_MODE)) do_mode() ; /* Mode */
else if (IS_KEY(v->pending, KEY_LPAR)) /* ( */
{
do_paren() ;
return ;
}
else if (!v->pending)
{
save_pending_values(v->current) ;
v->pending_op = KEY_EQ ;
return ;
}
show_display(v->MPdisp_val) ;
if (v->error) set_item(OPITEM, vstrs[(int) V_CLR]) ;
else set_item(OPITEM, "") ; /* Redisplay pending op. (if any). */
v->pending = 0 ;
if (!v->ismenu)
grey_buttons(v->base) ; /* Just show numeric keys for current base. */
}
void
do_point() /* Handle numeric point. */
{
/* the financial state is false - last key was not a fin. key */
v->funstate = 0;
if (!v->pointed)
{
if (v->toclear)
{
STRCPY(v->display, ".") ;
v->toclear = 0 ;
}
else STRNCAT(v->display, ".", 1) ;
v->pointed = 1 ;
}
else
beep() ;
set_item(DISPLAYITEM, v->display) ;
MPstr_to_num(v->display, v->base, v->MPdisp_val) ;
}
void
do_portion()
{
int MP1[MP_SIZE] ;
/* the financial state is false - last key was not a fin. key */
v->funstate = 0;
if (IS_KEY(v->current, KEY_ABS)) /* Abs */
{
mpstr(v->MPdisp_val, MP1) ;
mpabs(MP1, v->MPdisp_val) ;
}
else if (IS_KEY(v->current, KEY_FRAC)) /* Frac */
{
mpstr(v->MPdisp_val, MP1) ;
mpcmf(MP1, v->MPdisp_val) ;
}
else if (IS_KEY(v->current, KEY_INT)) /* Int */
{
mpstr(v->MPdisp_val, MP1) ;
mpcmim(MP1, v->MPdisp_val) ;
}
show_display(v->MPdisp_val) ;
}
void
do_shift() /* Perform bitwise shift on display value. */
{
int i, MPtemp[MP_SIZE], shift ;
BOOLEAN temp ;
double dval ;
shift = char_val(v->current) ;
if(strcmp(v->snum, v->display) != 0)
{
MPstr_to_num(v->display, v->base, MPtemp) ;
mpcmd(MPtemp, &dval) ;
}
else
mpcmd(v->MPdisp_val, &dval) ;
temp = ibool(dval) ;
if (IS_KEY(v->pending, KEY_LSFT)) temp = temp << shift ;
else if (IS_KEY(v->pending, KEY_RSFT)) temp = temp >> shift ;
dval = setbool((BOOLEAN)temp) ;
mpcdm(&dval, v->MPdisp_val) ;
show_display(v->MPdisp_val) ;
mpstr(v->MPdisp_val, v->MPlast_input) ;
return ;
}
void
do_sto_rcl() /* Save/restore value to/from memory register. */
{
int i, MPn[MP_SIZE], n ;
for (i = MEM_START; i <= MEM_END; i++)
if (v->current == menu_entries[i].val)
{
if (IS_KEY(v->pending, KEY_RCL)) /* Rcl */
{
mpstr(v->MPmvals[char_val(v->current)], v->MPdisp_val) ;
v->new_input = 1 ;
}
else if (IS_KEY(v->pending, KEY_STO)) /* Sto */
{
n = char_val(v->current) ;
if (IS_KEY(v->pending_op, KEY_ADD)) /* + */
{
mpstr(v->MPmvals[n], MPn) ;
mpadd(MPn, v->MPdisp_val, v->MPmvals[n]) ;
}
else if (IS_KEY(v->pending_op, KEY_SUB)) /* - */
{
mpstr(v->MPmvals[n], MPn) ;
mpsub(MPn, v->MPdisp_val, v->MPmvals[n]) ;
}
else if (IS_KEY(v->pending_op, KEY_MUL)) /* x */
{
mpstr(v->MPmvals[n], MPn) ;
mpmul(MPn, v->MPdisp_val, v->MPmvals[n]) ;
}
else if (IS_KEY(v->pending_op, KEY_DIV)) /* / */
{
mpstr(v->MPmvals[n], MPn) ;
mpdiv(MPn, v->MPdisp_val, v->MPmvals[n]) ;
}
else mpstr(v->MPdisp_val, v->MPmvals[n]) ;
v->pending_op = 0 ;
make_registers(MEM) ;
}
return ;
}
if (IS_KEY(v->current, KEY_ADD) || IS_KEY(v->current, KEY_SUB) ||
IS_KEY(v->current, KEY_MUL) || IS_KEY(v->current, KEY_DIV))
v->pending_op = v->current ;
}
void
do_trig() /* Perform all trigonometric functions. */
{
int i, MPtemp[MP_SIZE], MP1[MP_SIZE], MP2[MP_SIZE] ;
double cval ;
int MPcos[MP_SIZE], MPsin[MP_SIZE] ;
if (!v->inverse)
{
if (!v->hyperbolic)
{
if (v->ttype == DEG)
{
mppi(MP1) ;
mpmul(v->MPdisp_val, MP1, MP2) ;
i = 180 ;
mpcim(&i, MP1) ;
mpdiv(MP2, MP1, MPtemp) ;
}
else if (v->ttype == GRAD)
{
mppi(MP1) ;
mpmul(v->MPdisp_val, MP1, MP2) ;
i = 200 ;
mpcim(&i, MP1) ;
mpdiv(MP2, MP1, MPtemp) ;
}
else mpstr(v->MPdisp_val, MPtemp) ;
}
else mpstr(v->MPdisp_val, MPtemp) ;
if (!v->hyperbolic)
{
if (IS_KEY(v->current, KEY_COS)) /* Cos */
mpcos(MPtemp, v->MPtresults[(int) RAD]) ;
else if (IS_KEY(v->current, KEY_SIN)) /* Sin */
mpsin(MPtemp, v->MPtresults[(int) RAD]) ;
else if (IS_KEY(v->current, KEY_TAN)) /* Tan */
{
mpsin(MPtemp, MPsin) ;
mpcos(MPtemp, MPcos) ;
mpcmd(MPcos, &cval) ;
if (cval == 0.0) doerr(vstrs[(int) V_ERROR]) ;
mpdiv(MPsin, MPcos, v->MPtresults[(int) RAD]) ;
}
}
else
{
if (IS_KEY(v->current, KEY_COS)) /* Cosh */
mpcosh(MPtemp, v->MPtresults[(int) RAD]) ;
else if (IS_KEY(v->current, KEY_SIN)) /* Sinh */
mpsinh(MPtemp, v->MPtresults[(int) RAD]) ;
else if (IS_KEY(v->current, KEY_TAN)) /* Tanh */
mptanh(MPtemp, v->MPtresults[(int) RAD]) ;
}
mpstr(v->MPtresults[(int) RAD], v->MPtresults[(int) DEG]) ;
mpstr(v->MPtresults[(int) RAD], v->MPtresults[(int) GRAD]) ;
}
else
{
if (!v->hyperbolic)
{
if (IS_KEY(v->current, KEY_COS)) /* Acos */
mpacos(v->MPdisp_val, v->MPdisp_val) ;
else if (IS_KEY(v->current, KEY_SIN)) /* Asin */
mpasin(v->MPdisp_val, v->MPdisp_val) ;
else if (IS_KEY(v->current, KEY_TAN)) /* Atan */
mpatan(v->MPdisp_val, v->MPdisp_val) ;
}
else
{
if (IS_KEY(v->current, KEY_COS)) /* Acosh */
mpacosh(v->MPdisp_val, v->MPdisp_val) ;
else if (IS_KEY(v->current, KEY_SIN)) /* Asinh */
mpasinh(v->MPdisp_val, v->MPdisp_val) ;
else if (IS_KEY(v->current, KEY_TAN)) /* Atanh */
mpatanh(v->MPdisp_val, v->MPdisp_val) ;
}
if (!v->hyperbolic)
{
i = 180 ;
mpcim(&i, MP1) ;
mpmul(v->MPdisp_val, MP1, MP2) ;
mppi(MP1) ;
mpdiv(MP2, MP1, v->MPtresults[(int) DEG]) ;
i = 200 ;
mpcim(&i, MP1) ;
mpmul(v->MPdisp_val, MP1, MP2) ;
mppi(MP1) ;
mpdiv(MP2, MP1, v->MPtresults[(int) GRAD]) ;
}
else
{
mpstr(v->MPdisp_val, v->MPtresults[(int) DEG]) ;
mpstr(v->MPdisp_val, v->MPtresults[(int) GRAD]) ;
}
mpstr(v->MPdisp_val, v->MPtresults[(int) RAD]) ;
}
show_display(v->MPtresults[(int) v->ttype]) ;
mpstr(v->MPtresults[(int) v->ttype], v->MPdisp_val) ;
v->cur_op = '?';
}
void
do_trigtype() /* Change the current trigonometric type. */
{
if (v->current == TRIG_DEG) v->ttype = DEG ;
else if (v->current == TRIG_GRA) v->ttype = GRAD ;
else if (v->current == TRIG_RAD) v->ttype = RAD ;
else return ;
if (IS_KEY(v->cur_op, KEY_COS) ||
IS_KEY(v->cur_op, KEY_SIN) ||
IS_KEY(v->cur_op, KEY_TAN))
{
mpstr(v->MPtresults[(int) v->ttype], v->MPdisp_val) ;
show_display(v->MPtresults[(int) v->ttype]) ;
}
set_option_menu((int) TTYPEITEM, (int)v->ttype);
v->pending = 0 ;
}
BOOLEAN
ibool(x)
double x ;
{
BOOLEAN p ;
if (x > 68719476736.00) return(0) ;
else if (x < -68719476736.00) return(0) ;
else
{
while (x < 0.0) x += 4294967296.00 ;
while (x >= 4294967296.00) x -= 4294967296.00 ;
p = x ;
return(p) ;
}
}
BOOLEAN
ibool2(x)
double x ;
{
BOOLEAN p ;
if (x > 9007199254740991.00 || x < -9007199254740991.00)
{
return(0) ;
}
else
{
while (x < 0.0) x += 4294967296.00 ;
while (x >= 4294967296.00) x -= 4294967296.00 ;
p = x ;
return(p) ;
}
}
/* The following MP routines were not in the Brent FORTRAN package. They are
* derived here, in terms of the existing routines.
*/
/* MP precision arc cosine.
*
* 1. If (x < -1.0 or x > 1.0) then report DOMAIN error and return 0.0.
*
* 2. If (x = 0.0) then acos(x) = PI/2.
*
* 3. If (x = 1.0) then acos(x) = 0.0
*
* 4. If (x = -1.0) then acos(x) = PI.
*
* 5. If (0.0 < x < 1.0) then acos(x) = atan(sqrt(1-(x**2)) / x)
*
* 6. If (-1.0 < x < 0.0) then acos(x) = atan(sqrt(1-(x**2)) / x) + PI
*/
void
mpacos(MPx, MPretval)
int *MPx, *MPretval ;
{
int MP0[MP_SIZE], MP1[MP_SIZE], MP2[MP_SIZE] ;
int MPn1[MP_SIZE], MPpi[MP_SIZE], MPy[MP_SIZE], val ;
mppi(MPpi) ;
val = 0 ;
mpcim(&val, MP0) ;
val = 1 ;
mpcim(&val, MP1) ;
val = -1 ;
mpcim(&val, MPn1) ;
if (mpgt(MPx, MP1) || mplt(MPx, MPn1))
{
doerr("acos DOMAIN error") ;
mpstr(MP0, MPretval) ;
}
else if (mpeq(MPx, MP0))
{
val = 2 ;
mpdivi(MPpi, &val, MPretval) ;
}
else if (mpeq(MPx, MP1)) mpstr(MP0, MPretval) ;
else if (mpeq(MPx, MPn1)) mpstr(MPpi, MPretval) ;
else
{
mpmul(MPx, MPx, MP2) ;
mpsub(MP1, MP2, MP2) ;
mpsqrt(MP2, MP2) ;
mpdiv(MP2, MPx, MP2) ;
mpatan(MP2, MPy) ;
if (mpgt(MPx, MP0)) mpstr(MPy, MPretval) ;
else mpadd(MPy, MPpi, MPretval) ;
}
}
/* MP precision hyperbolic arc cosine.
*
* 1. If (x < 1.0) then report DOMAIN error and return 0.0.
*
* 2. acosh(x) = log(x + sqrt(x**2 - 1))
*/
void
mpacosh(MPx, MPretval)
int *MPx, *MPretval ;
{
int MP1[MP_SIZE], val ;
val = 1 ;
mpcim(&val, MP1) ;
if (mplt(MPx, MP1))
{
doerr("acosh DOMAIN error") ;
val = 0 ;
mpcim(&val, MPretval) ;
}
else
{
mpmul(MPx, MPx, MP1) ;
val = -1 ;
mpaddi(MP1, &val, MP1) ;
mpsqrt(MP1, MP1) ;
mpadd(MPx, MP1, MP1) ;
mpln(MP1, MPretval) ;
}
}
/* MP precision hyperbolic arc sine.
*
* 1. asinh(x) = log(x + sqrt(x**2 + 1))
*/
void
mpasinh(MPx, MPretval)
int *MPx, *MPretval ;
{
int MP1[MP_SIZE], val ;
mpmul(MPx, MPx, MP1) ;
val = 1 ;
mpaddi(MP1, &val, MP1) ;
mpsqrt(MP1, MP1) ;
mpadd(MPx, MP1, MP1) ;
mpln(MP1, MPretval) ;
}
/* MP precision hyperbolic arc tangent.
*
* 1. If (x <= -1.0 or x >= 1.0) then report a DOMAIn error and return 0.0.
*
* 2. atanh(x) = 0.5 * log((1 + x) / (1 - x))
*/
void
mpatanh(MPx, MPretval)
int *MPx, *MPretval ;
{
int MP0[MP_SIZE], MP1[MP_SIZE], MP2[MP_SIZE] ;
int MP3[MP_SIZE], MPn1[MP_SIZE], val ;
val = 0 ;
mpcim(&val, MP0) ;
val = 1 ;
mpcim(&val, MP1) ;
val = -1 ;
mpcim(&val, MPn1) ;
if (mpge(MPx, MP1) || mple(MPx, MPn1))
{
doerr("atanh DOMAIN error") ;
mpstr(MP0, MPretval) ;
}
else
{
mpadd(MP1, MPx, MP2) ;
mpsub(MP1, MPx, MP3) ;
mpdiv(MP2, MP3, MP3) ;
mpln(MP3, MP3) ;
MPstr_to_num("0.5", DEC, MP1) ;
mpmul(MP1, MP3, MPretval) ;
}
}
/* MP precision common log.
*
* 1. log10(x) = log10(e) * log(x)
*/
void
mplog10(MPx, MPretval)
int *MPx, *MPretval ;
{
int MP1[MP_SIZE], MP2[MP_SIZE], n ;
n = 10 ;
mpcim(&n, MP1) ;
mpln(MP1, MP1) ;
mpln(MPx, MP2) ;
mpdiv(MP2, MP1, MPretval) ;
}
void
process_parens(current)
char current ;
{
int i ;
int last_lpar ; /* Position in stack of last left paren. */
int last_num ; /* Position is numeric stack to start processing. */
/* Check to see if this is the first outstanding parenthesis. If so, and
* their is a current operation already defined, then push the current
* result on the numeric stack, and note it on the op stack, with a -1,
* which has this special significance.
* Zeroise current display value (in case of invalid operands inside the
* parentheses.
* Add the current pending operation to the opstack.
* Increment parentheses count.
*/
if (IS_KEY(current, KEY_LPAR))
{
if (!v->noparens && v->cur_op != '?')
{
push_num(v->MPresult) ;
push_op(-1) ;
i = 0 ;
mpcim(&i, v->MPdisp_val) ;
push_op(v->cur_op) ;
}
v->noparens++ ; /* Count of left brackets outstanding. */
save_pending_values(current) ;
}
/* If we haven't had any left brackets yet, and this is a right bracket,
* then just ignore it.
* Decrement the bracket count.
* Add a equals to the op stack, to force a calculation to be performed
* for two op operands. This is ignored if the preceding element of the
* op stack was an immediate operation.
* Work out where the preceding left bracket is in the stack, and then
* process the stack from that point until this end, pushing the result
* on the numeric stack, and setting the new op stack pointer appropriately.
* If there are no brackets left unmatched, then clear the pending flag,
* clear the stack pointers and current operation, and show the display.
*/
else if (IS_KEY(current, KEY_RPAR))
{
v->noparens-- ;
push_op('=') ;
last_lpar = v->opsptr - 1 ;
last_num = v->numsptr ;
while (!IS_KEY(v->opstack[last_lpar], KEY_LPAR))
{
if (v->opstack[last_lpar] == -1) last_num-- ;
last_lpar-- ;
}
process_stack(last_lpar + 1, last_num, v->opsptr - last_lpar - 1) ;
if (!v->noparens)
{
if (v->opsptr > 1)
{
push_op(KEY_EQ) ;
process_stack(0, 0, v->opsptr) ;
}
v->pending = v->opsptr = v->numsptr = 0 ;
v->cur_op = '?' ;
set_item(OPITEM, "") ;
if (v->error)
{
set_item(DISPLAYITEM, vstrs[(int) V_ERROR]) ;
set_item(OPITEM, vstrs[(int) V_CLR]) ;
STRCPY(v->display, vstrs[(int) V_ERROR]) ;
}
else
{
show_display(v->MPdisp_val) ;
mpstr(v->MPdisp_val, v->MPlast_input) ;
}
}
return ;
}
push_op(current) ;
}
void
push_num(MPval) /* Try to push value onto the numeric stack. */
int *MPval ;
{
if (v->numsptr < 0) return ;
if (v->numsptr >= MAXSTACK)
{
STRCPY(v->display, vstrs[(int) V_NUMSTACK]) ;
set_item(DISPLAYITEM, v->display) ;
v->error = 1 ;
beep() ;
set_item(OPITEM, vstrs[(int) V_CLR]) ;
}
else
{
if (v->MPnumstack[v->numsptr] == NULL)
v->MPnumstack[v->numsptr] =
(int *) LINT_CAST(calloc(1, sizeof(int) * MP_SIZE)) ;
mpstr(MPval, v->MPnumstack[v->numsptr++]) ;
}
}
void
push_op(val) /* Try to push value onto the operand stack. */
int val ;
{
if (v->opsptr < 0) return ;
if (v->opsptr >= MAXSTACK)
{
STRCPY(v->display, vstrs[(int) V_OPSTACK]) ;
set_item(DISPLAYITEM, v->display) ;
v->error = 1 ;
set_item(OPITEM, vstrs[(int) V_CLR]) ;
}
else v->opstack[v->opsptr++] = val ;
}
void
save_pending_values(val)
int val ;
{
int n ;
v->pending = val ;
for (n = 0; n < TITEMS; n++)
{
if (val == buttons[n].value)
v->pending_n = n ;
}
v->pending_win = v->curwin ;
if (v->pending_win == FCP_MODE)
v->pending_mode = v->modetype ;
}
double
setbool(p)
BOOLEAN p ;
{
BOOLEAN q ;
double val ;
q = p & 0x80000000 ;
p &= 0x7fffffff ;
val = p ;
if (q) val += 2147483648.0 ;
return(val) ;
}
double
do_round(result, ndigits)
double result;
int ndigits;
{
char buf2[40], buffer[100];
int temp;
if (isnan(result)) return result;
#if defined(_AIX) || defined(__aix) || defined(__osf__)
temp = finite(result);
if (!temp)
return (temp > 0) ? HUGE : -HUGE;
#else
#if defined(USL) || defined(__uxp__)
temp = finite(result);
if (!temp)
return (temp > 0) ? HUGE : -HUGE;
#else
if (temp = isinf(result)) return (temp > 0) ? HUGE : -HUGE;
#endif /* USL or __uxp__ */
#endif /* _AIX or __osf__ */
if (ndigits >= 0 && ndigits < MAX_DIGITS)
{
result += 0.5 * (result > 0 ? mods[ndigits] : -mods[ndigits]);
result -= fmod(result, mods[ndigits]);
}
sprintf(buf2, "%%.%dlg", MAX_DIGITS);
sprintf(buffer, buf2, result);
return atof(buffer);
}
BOOLEAN
try_compute_i(guess, result, method)
double guess;
double *result;
int method;
{
double sum_pos, sum_pos_prime, sum_neg, sum_neg_prime, w = guess;
double new_w;
int niter = 0;
for (;;)
{
double term, term_prime, f, f_prime, lsp, lsn;
sum_pos = sum_pos_prime = sum_neg = sum_neg_prime = 0;
if (v->MPfvals[2] != 0.0)
{
if (w == 1)
{
term = 1;
term_prime = v->MPfvals[0];
}
else
{
term = pow(w, v->MPfvals[0]);
term_prime = (v->MPfvals[0]) * pow(w, v->MPfvals[0] - 1.0);
}
if (v->MPfvals[2] > 0.0)
{
sum_pos += v->MPfvals[2] * term;
sum_pos_prime += v->MPfvals[2] * term_prime;
}
else
{
sum_neg -= v->MPfvals[2] * term;
sum_neg_prime -= v->MPfvals[2] * term_prime;
}
}
if (v->MPfvals[3] != 0.0)
{
if (w == 1.0)
{
term = v->MPfvals[0];
term_prime = v->MPfvals[0] * (v->MPfvals[0] - 1) / 2.0 +
v->MPfvals[0] * (0.0);
}
else
{
double wn = pow(w, v->MPfvals[0]);
double wdb = pow(w, 0.0);
term = (wn - 1.0) * wdb / (w - 1.0);
term_prime = (v->MPfvals[0] * pow(w,(0.0 + v->MPfvals[0] - .01))
+ (wn - 1.0) * (0.0) * pow(w, (0.0 - 1.0))) /
(w - 1.0) - (wn - 1.0) * wdb /
((w - 1.0) * (w - 1.0));
}
if (v->MPfvals[3] > 0.0)
{
sum_pos += v->MPfvals[3] * term;
sum_pos_prime += v->MPfvals[3] * term_prime;
}
else
{
sum_neg -= v->MPfvals[3] * term;
sum_neg_prime -= v->MPfvals[3] * term_prime;
}
}
if (v->MPfvals[4] != 0.0)
{
if (v->MPfvals[4] > 0.0) sum_pos += v->MPfvals[4];
else sum_neg -= v->MPfvals[4];
}
lsp = log(sum_pos);
lsn = log(sum_neg);
switch (method)
{
case 1:
f = lsp - lsn;
f_prime = sum_pos_prime / sum_pos - sum_neg_prime / sum_neg;
break;
case 2:
f = lsp / lsn - 1.0;
f_prime = (lsn * sum_pos_prime / sum_pos -
lsp * sum_neg_prime / sum_neg) /
(lsn * lsn);
break;
}
new_w = w - f / f_prime;
#if defined(_AIX) || defined(__aix) || defined (__osf__)
if (!(!isnan(new_w) && finite(new_w)))
return FALSE;
#else
#if defined(USL) || defined(__uxp__)
if (!(!isnan(new_w) && finite(new_w)))
return FALSE;
#else
if (!(!isnan(new_w) && !isinf(new_w)))
return FALSE;
#endif
#endif /* _AIX or __osf__ */
if (new_w == w || w != 0.0 && fabs((new_w - w) / w) < FIN_EPSILON)
break;
w = new_w;
if (niter++ >= MAX_FIN_ITER)
return FALSE;
}
*result = do_round((new_w - 1.0) * 100.0 * v->MPfvals[5], -1);
return TRUE;
}
compute_i(target)
double *target;
{
double p[3];
double first_period, last_period;
int nsc;
BOOLEAN success;
first_period = 1.0;
last_period = 0.0;
if (first_period < 0.0 || last_period < 0.0)
{
doerr(GETMESSAGE(5, 5, "ERROR:Invalid odd period values"));
return;
}
p[0] = v->MPfvals[2] + (first_period == 0.0 ? v->MPfvals[3] : 0);
p[1] = v->MPfvals[3];
p[2] = v->MPfvals[4] + (last_period == 0.0 ? v->MPfvals[3] : 0);
nsc = count_sign_changes(p, 3);
if (nsc == 0)
{
int MP1[MP_SIZE], MP2[MP_SIZE], MP3[MP_SIZE], MP4[MP_SIZE];
int MP5[MP_SIZE] ;
int val;
double temp;
temp = v->MPfvals[4]/v->MPfvals[2];
mpcdm(&temp, MP1);
val = 1 ;
mpcim(&val, MP2) ;
mpcdm(&(v->MPfvals[0]), MP4);
mpdiv(MP2, MP4, MP3) ;
mppwr2(MP1, MP3, MP5) ;
val = -1 ;
mpaddi(MP5, &val, MP1) ;
val = 1200 ;
mpmuli(MP1, &val, v->MPdisp_val) ;
mpcmd(v->MPdisp_val, target);
return;
}
else if (nsc > 1)
{
doerr(GETMESSAGE(5, 3, "ERROR: Multiple Solutions"));
return;
}
else if (v->MPfvals[0] <= 0)
{
doerr(GETMESSAGE(5, 4, "ERROR: Term <= 0"));
return;
}
success = try_compute_i((double)1.0, target, 1);
success = success || try_compute_i((double)1.0e-12, target, 1);
success = success || try_compute_i((double)1.0, target, 2);
success = success || try_compute_i((double)1.0e-12, target, 2);
if (!success)
doerr(GETMESSAGE(5, 1, "ERROR: Computation Failed"));
}
int
count_sign_changes(cf, count)
double *cf;
int count;
{
int i, curr_sign = 0, result = 0;
for (i = 0; i < count; i++)
{
if (cf[i] == 0.0) continue;
if (curr_sign == 1)
{
if (cf[i] > 0.0) continue;
curr_sign = -1;
result++;
}
else if (curr_sign == -1)
{
if (cf[i] < 0.0) continue;
curr_sign = 1;
result++;
}
else
{
if (cf[i] > 0.0) curr_sign = 1;
else curr_sign = -1;
}
}
return result;
}