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/*
* MIT License
*
* Copyright (c) 2023 Christian Chapman
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <string.h>
#include <math.h>
#include "watch_private_display.h"
#include "morsecalc_display.h"
// Display float on screen
void morsecalc_display_float(double d) {
// Special cases
if(d == 0) {
watch_display_string(" 0", 4);
return;
}
else if(isnan(d)) {
watch_display_string(" nan", 4);
return;
}
else if(d == (1.0)/(0.0)) {
watch_display_string(" inf", 4);
return;
}
else if(d == (-1.0)/(0.0)) {
watch_display_character('X', 1);
watch_display_string(" inf", 4);
return;
}
// Record number properties
// Sign
int is_negative = d<0;
if(is_negative) d = -d;
// Order of magnitude
int om = (int) floor(log(d)/log(10));
int om_is_negative = (om<0);
// Get the first 4 significant figures
int digits;
digits = round(d*pow(10.0, 3-om));
if(digits>9999) {
digits = 1000;
om++;
}
// Print signs
if(is_negative) {
// Xi; see https://joeycastillo.github.io/Sensor-Watch-Documentation/segmap
watch_set_pixel(0,11);
watch_set_pixel(2,12);
watch_set_pixel(2,11);
}
else watch_display_character(' ', 1);
if(om_is_negative) watch_set_pixel(1,9);
else watch_display_character(' ', 2);
// Print first 4 significant figures
watch_display_character('0'+(digits/1000)%10, 4);
watch_display_character('0'+(digits/100 )%10, 5);
watch_display_character('0'+(digits/10 )%10, 6);
watch_display_character('0'+(digits/1 )%10, 7);
// Prinat exponent
if(om_is_negative) om = -om; // Make exponent positive for display
if(om<=99) {
watch_display_character('0'+(om/10 )%10, 8);
watch_display_character('0'+(om/1 )%10, 9);
} else { // Over/underflow
if(om_is_negative) watch_display_string(" uf", 4);
else watch_display_string(" of", 4);
if(om<9999) { // Use main display to show order of magnitude
// (Should always succeed; max double is <2e308)
watch_display_character('0'+(om/1000)%10, 4);
watch_display_character('0'+(om/100 )%10, 5);
watch_display_character('0'+(om/10 )%10, 6);
watch_display_character('0'+(om/1 )%10, 7);
}
}
return;
}
// Print current input token
void morsecalc_display_token(morsecalc_state_t *mcs) {
watch_display_string(" ", 0); // Clear display
// Print morse code buffer
char c = MORSECODE_TREE[mcs->mc]; // Decode the morse code buffer's current contents
if('\0' == c) c = ' '; // Needed for watch_display_character
watch_display_character(c, 0); // Display current morse code char in mode position
unsigned int v = mcs->mc+1;
char bidx = 0; while (v >>= 1) bidx++;
watch_display_character('0'+bidx, 3); // Display buffer position in top right
// Print last 6 chars of current input line
uint8_t nlen = strlen(mcs->token); // number of characters in token
uint8_t nprint = min(nlen,6); // number of characters to print
watch_display_string(mcs->token+nlen-nprint, 10-nprint); // print right-aligned
return;
}
// Print stack or memory register contents.
void morsecalc_display_stack(morsecalc_state_t * mcs) {
watch_display_string(" ", 0); // Clear display
char c = MORSECODE_TREE[mcs->mc];
if('m' == c) { // Display memory
morsecalc_display_float(mcs->cs->mem);
watch_display_character(c, 0);
}
else {
// If the morse code buffer has a numeral in it, print that stack item
// Otherwise print top of stack
uint8_t idx = 0;
if(c >= '0' && c <= '9') idx = c - '0';
if(idx >= mcs->cs->s) watch_display_string(" empty", 4); // Stack empty
else morsecalc_display_float(mcs->cs->stack[mcs->cs->s-1-idx]); // Print stack item
watch_display_character('0'+idx, 0); // Print which stack item this is top center
}
watch_display_character('0'+(mcs->cs->s), 3); // Print the # of stack items top right
return;
}
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