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|
%% options
copyright owner = Dirk Krause
copyright year = 2014-xxxx
license = bsd
%% header
/** @file dk3maod8.h Write numbers to decimal char strings.
*/
#include <dk3conf.h>
#include <stdio.h>
#if DK3_HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#if DK3_HAVE_STDINT
#include <stdint.h>
#endif
#if DK3_HAVE_INTTYPES_H
#include <inttypes.h>
#endif
#if DK3_HAVE_LIMITS_H
#include <limits.h>
#endif
#if DK3_HAVE_MATH_H
#include <math.h>
#endif
#if DK3_HAVE_FLOAT_H
#include <float.h>
#endif
#include <dk3types.h>
#ifdef __cplusplus
extern "C" {
#endif
/** Convert largest size integer to string.
@param rb Result buffer.
@param sz Result buffer size (number of bytes).
@param va Value to convert.
@return 1 on success, 0 on error.
*/
int
dk3ma_im_to_c8_string(char *rb, size_t sz, dk3_im_t va);
/** Convert largest size unsigned integer to string.
@param rb Result buffer.
@param sz Result buffer size (number of bytes).
@param va Value to convert.
@return 1 on success, 0 on error.
*/
int
dk3ma_um_to_c8_string(char *rb, size_t sz, dk3_um_t va);
#ifdef __cplusplus
}
#endif
%% module
#include "dk3ma.h"
$!trace-include
/** Size correction for alignment.
*/
#define DK3MAOD8_ALIGN(sz,al) \
((0 == (sz % al)) ? (sz) : (((sz / al) + 1) * al))
int
dk3ma_um_to_c8_string(char *rb, size_t sz, dk3_um_t va)
{
char buf[DK3MAOD8_ALIGN((8*DK3_SIZEOF_UM),16)];
char *ptr;
dk3_um_t x;
size_t szmax = sizeof(buf);
size_t szused = 0;
size_t i;
int back = 1;
char c;
if ((NULL != rb) && (0 < sz)) {
rb[0] = '\0';
ptr = buf;
if (2 <= szmax) {
do {
x = va % 10;
va = va / 10;
c = '\0';
switch((int)x) {
case 0: { c = '0'; } break;
case 1: { c = '1'; } break;
case 2: { c = '2'; } break;
case 3: { c = '3'; } break;
case 4: { c = '4'; } break;
case 5: { c = '5'; } break;
case 6: { c = '6'; } break;
case 7: { c = '7'; } break;
case 8: { c = '8'; } break;
case 9: { c = '9'; } break;
}
if (szused < szmax) {
*(ptr++) = c;
szused++;
} else {
back = 0;
}
} while((DK3_UM_0 != va) && (szused < szmax) && (1 == back));
if (szused < szmax) {
buf[szused] = '\0';
} else {
back = 0;
buf[szmax - 1] = '\0';
}
if (1 == back) {
if (szused < sz) {
for (i = 0; i < szused; i++) {
rb[i] = buf[szused - i - 1];
}
rb[szused] = '\0';
} else {
back = 0;
}
}
}
}
return back;
}
int
dk3ma_im_to_c8_string(char *rb, size_t sz, dk3_im_t va)
{
char *orb;
dk3_um_t umva;
int back = 0;
if ((NULL != rb) && (0 < sz)) {
orb = rb;
rb[0] = '\0';
if (2 < sz) {
if (DK3_IM_0 > va) {
*(rb++) = '-';
sz--;
if (DK3_IM_MIN == va) {
umva = (dk3_um_t)DK3_IM_MAX;
umva++;
} else {
umva = (dk3_um_t)(DK3_IM_0 - va);
}
} else {
umva = (dk3_um_t)va;
}
back = dk3ma_um_to_c8_string(rb, sz, umva);
}
if (0 == back) { *orb = '\0'; }
}
return back;
}
|
