| 1 | #include <malloc.h> |
| 2 | #include <stdio.h> |
| 3 | #include <string.h> |
| 4 | |
| 5 | #include "format.h" |
| 6 | |
| 7 | /* global variables */ |
| 8 | |
| 9 | #define DEFAULT_FORMAT "=> %.6g\n" |
| 10 | char *format = NULL; |
| 11 | char *minform = NULL; |
| 12 | |
| 13 | /* print function */ |
| 14 | |
| 15 | void set_format (char *prompt, int precision) |
| 16 | { |
| 17 | char buffer[128] = {0}; |
| 18 | free_format (); |
| 19 | sprintf (buffer, "%s%%.%dg\n", prompt, precision); |
| 20 | format = strdup (buffer); |
| 21 | sprintf (buffer, "%%.%dg", precision); |
| 22 | minform = strdup (buffer); |
| 23 | } |
| 24 | |
| 25 | void free_format () |
| 26 | { |
| 27 | if (format) { |
| 28 | free (format); |
| 29 | format = NULL; |
| 30 | } |
| 31 | if (minform) { |
| 32 | free (minform); |
| 33 | minform = NULL; |
| 34 | } |
| 35 | } |
| 36 | |
| 37 | double print (double value) |
| 38 | { |
| 39 | fprintf (stdout, format ? format : DEFAULT_FORMAT, value); |
| 40 | fflush (stdout); |
| 41 | return value; |
| 42 | } |
| 43 | |
| 44 | /* vim: set ts=4 sw=4 et: */ |