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/* test harness for bits.h
*
* This file is Copyright (c) 2010 by the GPSD project
* BSD terms apply: see the file COPYING in the distribution root for details.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "bits.h"
/*@ -duplicatequals -formattype */
typedef unsigned long long ubig;
static unsigned char buf[80];
static union int_float i_f;
static union long_double l_d;
static char sb1, sb2;
static unsigned char ub1, ub2;
static short sw1, sw2;
static unsigned short uw1, uw2;
static int sl1, sl2;
static unsigned int ul1, ul2;
static long long sL1, sL2;
static unsigned long long uL1, uL2;
static float f1;
static double d1;
static char /*@ observer @*/ *hexdump(const void *binbuf, size_t len)
{
static char hexbuf[BUFSIZ];
size_t i, j = 0;
const char *ibuf = (const char *)binbuf;
const char *hexchar = "0123456789abcdef";
/*@ -shiftimplementation @*/
for (i = 0; i < len; i++) {
hexbuf[j++] = hexchar[(ibuf[i] & 0xf0) >> 4];
hexbuf[j++] = hexchar[ibuf[i] & 0x0f];
}
/*@ +shiftimplementation @*/
hexbuf[j] = '\0';
return hexbuf;
}
static void bedumpall(void)
{
(void)printf("getsb: %016llx %016llx %016llx %016llx\n",
(ubig) sb1, (ubig) sb2,
(ubig) getsb(buf, 0), (ubig) getsb(buf, 8));
(void)printf("getub: %016llx %016llx %016llx %016llx\n",
(ubig) ub1, (ubig) ub2,
(ubig) getub(buf, 0), (ubig) getub(buf, 8));
(void)printf("getbesw: %016llx %016llx %016llx %016llx\n",
(ubig) sw1, (ubig) sw2,
(ubig) getbesw(buf, 0), (ubig) getbesw(buf, 8));
(void)printf("getbeuw: %016llx %016llx %016llx %016llx\n",
(ubig) uw1, (ubig) uw2,
(ubig) getbeuw(buf, 0), (ubig) getbeuw(buf, 8));
(void)printf("getbesl: %016llx %016llx %016llx %016llx\n",
(ubig) sl1, (ubig) sl2,
(ubig) getbesl(buf, 0), (ubig) getbesl(buf, 8));
(void)printf("getbeul: %016llx %016llx %016llx %016llx\n",
(ubig) ul1, (ubig) ul2,
(ubig) getbeul(buf, 0), (ubig) getbeul(buf, 8));
(void)printf("getbesL: %016llx %016llx %016llx %016llx\n",
(ubig) sL1, (ubig) sL2,
(ubig) getbesL(buf, 0), (ubig) getbesL(buf, 8));
(void)printf("getbeuL: %016llx %016llx %016llx %016llx\n",
(ubig) uL1, (ubig) uL2,
(ubig) getbeuL(buf, 0), (ubig) getbeuL(buf, 8));
(void)printf("getbef: %f %f\n", f1, getbef(buf, 24));
(void)printf("getbed: %.16f %.16f\n", d1, getbed(buf, 16));
}
static void ledumpall(void)
{
(void)printf("getsb: %016llx %016llx %016llx %016llx\n",
(ubig) sb1, (ubig) sb2,
(ubig) getsb(buf, 0), (ubig) getsb(buf, 8));
(void)printf("getub: %016llx %016llx %016llx %016llx\n",
(ubig) ub1, (ubig) ub2,
(ubig) getub(buf, 0), (ubig) getub(buf, 8));
(void)printf("getlesw: %016llx %016llx %016llx %016llx\n",
(ubig) sw1, (ubig) sw2,
(ubig) getlesw(buf, 0), (ubig) getlesw(buf, 8));
(void)printf("getleuw: %016llx %016llx %016llx %016llx\n",
(ubig) uw1, (ubig) uw2,
(ubig) getleuw(buf, 0), (ubig) getleuw(buf, 8));
(void)printf("getlesl: %016llx %016llx %016llx %016llx\n",
(ubig) sl1, (ubig) sl2,
(ubig) getlesl(buf, 0), (ubig) getlesl(buf, 8));
(void)printf("getleul: %016llx %016llx %016llx %016llx\n",
(ubig) ul1, (ubig) ul2,
(ubig) getleul(buf, 0), (ubig) getleul(buf, 8));
(void)printf("getlesL: %016llx %016llx %016llx %016llx\n",
(ubig) sL1, (ubig) sL2,
(ubig) getlesL(buf, 0), (ubig) getlesL(buf, 8));
(void)printf("getleuL: %016llx %016llx %016llx %016llx\n",
(ubig) uL1, (ubig) uL2,
(ubig) getleuL(buf, 0), (ubig) getleuL(buf, 8));
(void)printf("getlef: %f %f\n", f1, getlef(buf, 24));
(void)printf("getled: %.16f %.16f\n", d1, getled(buf, 16));
}
struct unsigned_test
{
unsigned char *buf;
unsigned int start, width;
unsigned long long expected;
char *description;
};
/*@ -duplicatequals +ignorequals @*/
int main(void)
{
/*@ -observertrans -usereleased @*/
struct unsigned_test *up, unsigned_tests[] = {
/* tests using the big buffer */
{buf, 0, 1, 0, "first bit of first byte"},
{buf, 0, 8, 0x01, "first 8 bits"},
{buf, 32, 7, 2, "first seven bits of fifth byte"},
{buf, 56, 12, 0x8f, "12 bits crossing 7th to 8th bytes (0x08ff)"},
{buf, 78, 4, 11, "2 bits crossing 8th to 9th byte (0xfefd)"},
/* sporadic tests based on found bugs */
{(unsigned char *)"\x19\x23\f6",
7, 2, 2, "2 bits crossing 1st to 2nd byte (0x1923)"},
};
unsigned char *sp;
memcpy(buf, "\x01\x02\x03\x04\x05\x06\x07\x08", 8);
memcpy(buf + 8, "\xff\xfe\xfd\xfc\xfb\xfa\xf9\xf8", 8);
memcpy(buf + 16, "\x40\x09\x21\xfb\x54\x44\x2d\x18", 8);
memcpy(buf + 24, "\x40\x49\x0f\xdb", 4);
/*@ +observertrans +usereleased @*/
(void)fputs("Test data:", stdout);
for (sp = buf; sp < buf + 28; sp++)
(void)printf(" %02x", *sp);
(void)putc('\n', stdout);
/* big-endian test */
/*@-type@*/
printf("Big-endian:\n");
sb1 = getsb(buf, 0);
sb2 = getsb(buf, 8);
ub1 = getub(buf, 0);
ub2 = getub(buf, 8);
sw1 = getbesw(buf, 0);
sw2 = getbesw(buf, 8);
uw1 = getbeuw(buf, 0);
uw2 = getbeuw(buf, 8);
sl1 = getbesl(buf, 0);
sl2 = getbesl(buf, 8);
ul1 = getbeul(buf, 0);
ul2 = getbeul(buf, 8);
sL1 = getbesL(buf, 0);
sL2 = getbesL(buf, 8);
uL1 = getbeuL(buf, 0);
uL2 = getbeuL(buf, 8);
f1 = getbef(buf, 24);
d1 = getbed(buf, 16);
/*@+type@*/
bedumpall();
/* little-endian test */
printf("Little-endian:\n");
/*@-type@*/
sb1 = getsb(buf, 0);
sb2 = getsb(buf, 8);
ub1 = getub(buf, 0);
ub2 = getub(buf, 8);
sw1 = getlesw(buf, 0);
sw2 = getlesw(buf, 8);
uw1 = getleuw(buf, 0);
uw2 = getleuw(buf, 8);
sl1 = getlesl(buf, 0);
sl2 = getlesl(buf, 8);
ul1 = getleul(buf, 0);
ul2 = getleul(buf, 8);
sL1 = getlesL(buf, 0);
sL2 = getlesL(buf, 8);
uL1 = getleuL(buf, 0);
uL2 = getleuL(buf, 8);
f1 = getlef(buf, 24);
d1 = getled(buf, 16);
/*@+type@*/
ledumpall();
(void)printf("Testing bitfield extraction:\n");
for (up = unsigned_tests;
up <
unsigned_tests + sizeof(unsigned_tests) / sizeof(unsigned_tests[0]);
up++) {
unsigned long long res = ubits((char *)buf, up->start, up->width);
(void)printf("ubits(%s, %d, %d) %s should be %llu, is %llu: %s\n",
hexdump(buf, strlen((char *)buf)),
up->start, up->width, up->description, up->expected, res,
res == up->expected ? "succeeded" : "FAILED");
}
exit(0);
}
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