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POLY->ASCII: added inline comments.

This commit is contained in:
malte 2014-05-18 18:28:39 +02:00
parent 3bf66ce274
commit b997dc65fd
1 changed files with 10 additions and 2 deletions
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12
src/ascii_poly.c
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@ -19,11 +19,11 @@
* MA 02110-1301 USA * MA 02110-1301 USA
*/ */
#include "ascii_poly.h"
#include "context.h" #include "context.h"
#include "err.h" #include "err.h"
#include "mem.h" #include "mem.h"
#include "poly.h" #include "poly.h"
#include "ascii_poly.h"
#include <math.h> #include <math.h>
#include <stdio.h> #include <stdio.h>
@ -101,16 +101,24 @@ char *polynom_to_ascii(pb_poly *to_ascii)
char *tmp_ptr = string; char *tmp_ptr = string;
u_int8_t ascii_value = 0; u_int8_t ascii_value = 0;
/* every char */
for (u_int32_t i = 0; i < length_poly; i += ASCII_DIGITS) { for (u_int32_t i = 0; i < length_poly; i += ASCII_DIGITS) {
/* every bit*/
for (u_int32_t j = 0; j < ASCII_DIGITS; j++) { for (u_int32_t j = 0; j < ASCII_DIGITS; j++) {
/* get the bit */
if (mp_toradix(&(to_ascii->terms[i + j]), &bit_buffer, 2)) { if (mp_toradix(&(to_ascii->terms[i + j]), &bit_buffer, 2)) {
return NULL; return NULL;
} }
/* bit as integer */
u_int8_t bit = atoi(&bit_buffer); u_int8_t bit = atoi(&bit_buffer);
/* bitshift to the left */
ascii_value <<= 1; ascii_value <<= 1;
/* set the new bit and keep the other */
ascii_value |= bit; ascii_value |= bit;
} }
*tmp_ptr++ = ascii_value; /* char into string */
*tmp_ptr++ = (char) ascii_value;
/* reset for next char */
ascii_value = 0; ascii_value = 0;
} }
return string; return string;