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/* Test of scanf(): float conversion.
$Id: sscanf_flt-f2.c,v 1.1.2.3 2008/03/20 21:42:36 joerg_wunsch Exp $ */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "progmem.h"
#ifdef __AVR__
# define ASSERT(expr) \
do { \
if (!(expr)) exit(__LINE__); \
} while (0)
# define EXIT(v) exit (v)
# if defined(__AVR_ATmega128__)
/* ATmega128 has enough RAM for sprintf(), print to 0x2000 in XRAM. */
# define PRINTF(f...) sprintf((char *)0x2000, f)
# else
/* small AVR */
# define PRINTF(f...)
# endif
#else
# include <assert.h>
# define ASSERT(expr) assert (expr)
# define EXIT(v) exit ((v) < 256 ? (v) : 255)
# define PRINTF(f...) printf (f)
# define sscanf_P sscanf
# define memcmp_P memcmp
#endif
/* Next variables are useful to debug the AVR. */
int vrslt = 1;
struct {
float x[10];
} v = { {1.0} };
void Check (int line, int expval, int rslt)
{
vrslt = rslt;
if (rslt != expval) {
PRINTF ("\nLine %d: expect= %d, rslt= %d\n", line, expval, rslt);
EXIT (line);
}
}
/* The sscanf() is called 4 times: SRAM and FLASH format, 2 values
to fill before run. */
#define CHECK(expval, ass_expr, str, fmt, ...) \
do { \
PROGMEM static char fmt_p[] = fmt; \
char str_s[220]; \
char fmt_s[40]; \
char FILL; \
int i; \
int (* volatile vp)(const char *, const char *, ...); \
\
ASSERT (sizeof(str_s) >= sizeof(str)); \
ASSERT (sizeof(fmt_s) >= sizeof(fmt_p)); \
strcpy_P (str_s, PSTR(str)); \
strcpy_P (fmt_s, fmt_p); \
\
for (FILL = 0; FILL < 4; FILL++) { \
memset (&v, FILL, sizeof(v)); \
vp = (FILL & 1) ? sscanf_P : sscanf; \
i = vp (str_s, (FILL & 1) ? fmt_p : fmt_s, ##__VA_ARGS__); \
Check (__LINE__, expval, i); \
ASSERT (ass_expr); \
} \
} while (0)
int main ()
{
PROGMEM static const float ones[10] = {1, 1, 1, 1, 1, 1, 1, 1, 1, 1};
/* All symbols. */
CHECK (
4,
v.x[0] == 12345678 && v.x[1] == 0.25
&& v.x[2] == 90 && v.x[3] == -0.5,
"12345678 .25e0 +9e+01 -0.5E-00",
"%e %e %e %e",
& v.x[0], & v.x[1], & v.x[2], & v.x[3]);
/* 1.0 */
CHECK (
10,
!memcmp_P (v.x, ones, 10 * sizeof(float)),
"1. 1.0 01 001. 0001.0 00001.00 1.e0 1.00000e000000 1e+00 1e-0",
"%e %e %e %e %e %e %e %e %e %e",
& v.x[0], & v.x[1], & v.x[2], & v.x[3], & v.x[4],
& v.x[5], & v.x[6], & v.x[7], & v.x[8], & v.x[9]);
/* Negative exponents. */
CHECK (
10,
!memcmp_P (v.x, ones, 10 * sizeof(float)),
"10e-1 "
"100e-2 "
"1000e-3 "
"10000e-4 "
"100000e-5 "
"1000000e-6 "
"10000000e-7 "
"100000000e-8 "
"1000000000e-9 "
"10000000000e-10 ",
"%e %e %e %e %e %e %e %e %e %e",
& v.x[0], & v.x[1], & v.x[2], & v.x[3], & v.x[4],
& v.x[5], & v.x[6], & v.x[7], & v.x[8], & v.x[9]);
CHECK (
10,
!memcmp_P (v.x, ones, 10 * sizeof(float)),
"100000000000e-11 "
"1000000000000e-12 "
"10000000000000e-13 "
"100000000000000e-14 "
"1000000000000000e-15 "
"10000000000000000e-16 "
"100000000000000000e-17 "
"1000000000000000000e-18 "
"10000000000000000000e-19 "
"100000000000000000000e-20 ",
"%e %e %e %e %e %e %e %e %e %e",
& v.x[0], & v.x[1], & v.x[2], & v.x[3], & v.x[4],
& v.x[5], & v.x[6], & v.x[7], & v.x[8], & v.x[9]);
/* Positive exponents. */
CHECK (
10,
!memcmp_P (v.x, ones, 10 * sizeof(float)),
".1e1 "
".01e2 "
".001e3 "
".0001e4 "
".00001e5 "
".000001e6 "
".0000001e7 "
".00000001e8 "
".000000001e9 "
".0000000001e10 ",
"%e %e %e %e %e %e %e %e %e %e",
& v.x[0], & v.x[1], & v.x[2], & v.x[3], & v.x[4],
& v.x[5], & v.x[6], & v.x[7], & v.x[8], & v.x[9]);
CHECK (
10,
!memcmp_P (v.x, ones, 10 * sizeof(float)),
".00000000001e11 "
".000000000001e12 "
".0000000000001e13 "
".00000000000001e14 "
".000000000000001e15 "
".0000000000000001e16 "
".00000000000000001e17 "
".000000000000000001e18 "
".0000000000000000001e19 "
".00000000000000000001e20 ",
"%e %e %e %e %e %e %e %e %e %e",
& v.x[0], & v.x[1], & v.x[2], & v.x[3], & v.x[4],
& v.x[5], & v.x[6], & v.x[7], & v.x[8], & v.x[9]);
return 0;
}
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