| 1 | #include <malloc.h> |
| 2 | #include <stdio.h> |
| 3 | #include <string.h> |
| 4 | |
| 5 | #include "format.h" |
| 6 | |
| 7 | /* global variables */ |
| 8 | |
| 9 | int _ibase = 10; |
| 10 | int _obase = 10; |
| 11 | |
| 12 | #define DEFAULT_FORMAT "=> %.6g\n" |
| 13 | char *_format = NULL; |
| 14 | #define DEFAULT_MINFORM "%.6g" |
| 15 | char *_minform = NULL; |
| 16 | |
| 17 | int _precision = 6; |
| 18 | |
| 19 | #define DEFAULT_PROMPT "=> " |
| 20 | char *_prompt = NULL; |
| 21 | |
| 22 | /* print function */ |
| 23 | |
| 24 | void set_precision (int precision) |
| 25 | { |
| 26 | _precision = precision; |
| 27 | } |
| 28 | |
| 29 | int get_precision () |
| 30 | { |
| 31 | return _precision; |
| 32 | } |
| 33 | |
| 34 | void set_prompt (char *prompt) |
| 35 | { |
| 36 | if (_prompt) { |
| 37 | free (_prompt); |
| 38 | } |
| 39 | _prompt = strdup (prompt); |
| 40 | } |
| 41 | |
| 42 | void set_format () |
| 43 | { |
| 44 | char buffer[128] = {0}; |
| 45 | sprintf (buffer, "%s%%.%dg\n", _prompt ? _prompt : DEFAULT_PROMPT, _precision); |
| 46 | if (_format) { |
| 47 | free (_format); |
| 48 | } |
| 49 | _format = strdup (buffer); |
| 50 | sprintf (buffer, "%%.%dg", _precision); |
| 51 | if (_minform) { |
| 52 | free (_minform); |
| 53 | } |
| 54 | _minform = strdup (buffer); |
| 55 | } |
| 56 | |
| 57 | void free_format () |
| 58 | { |
| 59 | if (_format) { |
| 60 | free (_format); |
| 61 | _format = NULL; |
| 62 | } |
| 63 | if (_minform) { |
| 64 | free (_minform); |
| 65 | _minform = NULL; |
| 66 | } |
| 67 | if (_prompt) { |
| 68 | free (_prompt); |
| 69 | _prompt = NULL; |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | void set_base (int in, int out) |
| 74 | { |
| 75 | _ibase = in; |
| 76 | _obase = out; |
| 77 | } |
| 78 | |
| 79 | char *show_base () |
| 80 | { |
| 81 | static char str[16] = {0}; |
| 82 | sprintf (str, "%d/%d", _ibase, _obase); |
| 83 | return str; |
| 84 | } |
| 85 | |
| 86 | int get_ibase () |
| 87 | { |
| 88 | return _ibase; |
| 89 | } |
| 90 | |
| 91 | /* multi base integer to ascii function */ |
| 92 | |
| 93 | char *mbitoa (unsigned long value) |
| 94 | { |
| 95 | static char str[8 * sizeof (long) + 1]; |
| 96 | |
| 97 | /* decompose */ |
| 98 | char buffer[8 * sizeof (long) + 1] = {0}; |
| 99 | int size = 0; |
| 100 | do { |
| 101 | char x = value % _obase; |
| 102 | buffer[size++] = (x > 9) ? 'a' + x - 10 : '0' + x; |
| 103 | value /= _obase; |
| 104 | } while (value != 0); |
| 105 | |
| 106 | /* revert */ |
| 107 | int i; |
| 108 | for (i = 0; i < size; i++) { |
| 109 | str[i] = buffer [size - i - 1]; |
| 110 | } |
| 111 | str[size] = '\0'; |
| 112 | |
| 113 | return str; |
| 114 | } |
| 115 | |
| 116 | double print (double value) |
| 117 | { |
| 118 | if (_obase == 10) { |
| 119 | printf (_format ? _format : DEFAULT_FORMAT, value); |
| 120 | } else { |
| 121 | printf ("%s%s\n", (_prompt) ? _prompt : DEFAULT_PROMPT, mbitoa ((unsigned int)value)); |
| 122 | } |
| 123 | return value; |
| 124 | } |
| 125 | |
| 126 | double printl (double value) |
| 127 | { |
| 128 | if (_obase == 10) { |
| 129 | printf (_minform ? _minform : DEFAULT_MINFORM, value); |
| 130 | } else { |
| 131 | printf ("%s", mbitoa ((unsigned int)value)); |
| 132 | } |
| 133 | return value; |
| 134 | } |
| 135 | |
| 136 | /* vim: set ts=4 sw=4 et: */ |