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asn1c/skeletons/REAL.c

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/*-
* Copyright (c) 2004-2017 Lev Walkin <vlm@lionet.info>. All rights reserved.
* Redistribution and modifications are permitted subject to BSD license.
*/
#define _ISOC99_SOURCE /* For ilogb() and quiet NAN */
#ifndef _BSD_SOURCE
#define _BSD_SOURCE /* To reintroduce finite(3) */
#endif
#include <asn_internal.h>
#if defined(__alpha)
#include <sys/resource.h> /* For INFINITY */
#endif
#include <stdlib.h> /* for strtod(3) */
#include <math.h>
#include <float.h>
#include <errno.h>
#include <REAL.h>
#include <OCTET_STRING.h>
#undef INT_MAX
#define INT_MAX ((int)(((unsigned int)-1) >> 1))
#if !(defined(NAN) || defined(INFINITY))
static volatile double real_zero CC_NOTUSED = 0.0;
#endif
#ifndef NAN
#define NAN (0.0/0.0)
#endif
#ifndef INFINITY
#define INFINITY (1.0/0.0)
#endif
#if defined(__clang__)
/*
* isnan() is defined using generic selections and won't compile in
* strict C89 mode because of too fancy system's standard library.
* However, prior to C11 the math had a perfectly working isnan()
* in the math library.
* Disable generic selection warning so we can test C89 mode with newer libc.
*/
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wc11-extensions"
static int asn_isnan(double d) {
return isnan(d);
}
static int asn_isfinite(double d) {
#ifdef isfinite
return isfinite(d); /* ISO C99 */
#else
return finite(d); /* Deprecated on Mac OS X 10.9 */
#endif
}
#pragma clang diagnostic pop
#else /* !clang */
#define asn_isnan(v) isnan(v)
#ifdef isfinite
#define asn_isfinite(d) isfinite(d) /* ISO C99 */
#else
#define asn_isfinite(d) finite(d) /* Deprecated on Mac OS X 10.9 */
#endif
#endif /* clang */
/*
* REAL basic type description.
*/
static const ber_tlv_tag_t asn_DEF_REAL_tags[] = {
(ASN_TAG_CLASS_UNIVERSAL | (9 << 2))
};
asn_TYPE_operation_t asn_OP_REAL = {
ASN__PRIMITIVE_TYPE_free,
REAL_print,
REAL_compare,
ber_decode_primitive,
der_encode_primitive,
REAL_decode_xer,
REAL_encode_xer,
#ifdef ASN_DISABLE_OER_SUPPORT
0,
0,
#else
REAL_decode_oer,
REAL_encode_oer,
#endif /* ASN_DISABLE_OER_SUPPORT */
#ifdef ASN_DISABLE_PER_SUPPORT
0,
0,
#else
REAL_decode_uper,
REAL_encode_uper,
#endif /* ASN_DISABLE_PER_SUPPORT */
REAL_random_fill,
0 /* Use generic outmost tag fetcher */
};
asn_TYPE_descriptor_t asn_DEF_REAL = {
"REAL",
"REAL",
&asn_OP_REAL,
asn_DEF_REAL_tags,
sizeof(asn_DEF_REAL_tags) / sizeof(asn_DEF_REAL_tags[0]),
asn_DEF_REAL_tags, /* Same as above */
sizeof(asn_DEF_REAL_tags) / sizeof(asn_DEF_REAL_tags[0]),
{ 0, 0, asn_generic_no_constraint },
0,
0, /* No members */
0 /* No specifics */
};
typedef enum specialRealValue {
SRV__NOT_A_NUMBER,
SRV__MINUS_INFINITY,
SRV__PLUS_INFINITY
} specialRealValue_e;
static struct specialRealValue_s {
char *string;
size_t length;
long dv;
} specialRealValue[] = {
#define SRV_SET(foo, val) { foo, sizeof(foo) - 1, val }
SRV_SET("<NOT-A-NUMBER/>", 0),
SRV_SET("<MINUS-INFINITY/>", -1),
SRV_SET("<PLUS-INFINITY/>", 1),
#undef SRV_SET
};
ssize_t
REAL__dump(double d, int canonical, asn_app_consume_bytes_f *cb, void *app_key) {
char local_buf[64];
char *buf = local_buf;
ssize_t buflen = sizeof(local_buf);
const char *fmt = canonical ? "%.17E" /* Precise */ : "%.15f" /* Pleasant*/;
ssize_t ret;
/*
* Check whether it is a special value.
*/
/* fpclassify(3) is not portable yet */
if(asn_isnan(d)) {
buf = specialRealValue[SRV__NOT_A_NUMBER].string;
buflen = specialRealValue[SRV__NOT_A_NUMBER].length;
return (cb(buf, buflen, app_key) < 0) ? -1 : buflen;
} else if(!asn_isfinite(d)) {
if(copysign(1.0, d) < 0.0) {
buf = specialRealValue[SRV__MINUS_INFINITY].string;
buflen = specialRealValue[SRV__MINUS_INFINITY].length;
} else {
buf = specialRealValue[SRV__PLUS_INFINITY].string;
buflen = specialRealValue[SRV__PLUS_INFINITY].length;
}
return (cb(buf, buflen, app_key) < 0) ? -1 : buflen;
} else if(ilogb(d) <= -INT_MAX) {
if(copysign(1.0, d) < 0.0) {
buf = "-0";
buflen = 2;
} else {
buf = "0";
buflen = 1;
}
return (cb(buf, buflen, app_key) < 0) ? -1 : buflen;
}
/*
* Use the libc's double printing, hopefully they got it right.
*/
do {
ret = snprintf(buf, buflen, fmt, d);
if(ret < 0) {
/* There are some old broken APIs. */
buflen <<= 1;
if(buflen > 4096) {
/* Should be plenty. */
if(buf != local_buf) FREEMEM(buf);
return -1;
}
} else if(ret >= buflen) {
buflen = ret + 1;
} else {
buflen = ret;
break;
}
if(buf != local_buf) FREEMEM(buf);
buf = (char *)MALLOC(buflen);
if(!buf) return -1;
} while(1);
if(canonical) {
/*
* Transform the "[-]d.dddE+-dd" output into "[-]d.dddE[-]d"
* Check that snprintf() constructed the output correctly.
*/
char *dot;
char *end = buf + buflen;
char *last_zero;
char *first_zero_in_run;
char *s;
enum {
LZSTATE_NOTHING,
LZSTATE_ZEROES
} lz_state = LZSTATE_NOTHING;
dot = (buf[0] == 0x2d /* '-' */) ? (buf + 2) : (buf + 1);
if(*dot >= 0x30) {
if(buf != local_buf) FREEMEM(buf);
errno = EINVAL;
return -1; /* Not a dot, really */
}
*dot = 0x2e; /* Replace possible comma */
for(first_zero_in_run = last_zero = s = dot + 2; s < end; s++) {
switch(*s) {
case 0x45: /* 'E' */
if(lz_state == LZSTATE_ZEROES) last_zero = first_zero_in_run;
break;
case 0x30: /* '0' */
if(lz_state == LZSTATE_NOTHING) first_zero_in_run = s;
lz_state = LZSTATE_ZEROES;
continue;
default:
lz_state = LZSTATE_NOTHING;
continue;
}
break;
}
if(s == end) {
if(buf != local_buf) FREEMEM(buf);
errno = EINVAL;
return -1; /* No promised E */
}
assert(*s == 0x45);
{
char *E = s;
char *expptr = ++E;
char *s = expptr;
int sign;
if(*expptr == 0x2b /* '+' */) {
/* Skip the "+" */
buflen -= 1;
sign = 0;
} else {
sign = 1;
s++;
}
expptr++;
if(expptr > end) {
if(buf != local_buf) FREEMEM(buf);
errno = EINVAL;
return -1;
}
if(*expptr == 0x30) {
buflen--;
expptr++;
}
if(lz_state == LZSTATE_ZEROES) {
*last_zero = 0x45; /* E */
buflen -= s - (last_zero + 1);
s = last_zero + 1;
if(sign) {
*s++ = 0x2d /* '-' */;
buflen++;
}
}
for(; expptr <= end; s++, expptr++)
*s = *expptr;
}
} else {
/*
* Remove trailing zeros.
*/
char *end = buf + buflen;
char *last_zero = end;
int stoplooking = 0;
char *z;
for(z = end - 1; z > buf; z--) {
switch(*z) {
case 0x30:
if(!stoplooking)
last_zero = z;
continue;
case 0x31: case 0x32: case 0x33: case 0x34:
case 0x35: case 0x36: case 0x37: case 0x38: case 0x39:
stoplooking = 1;
continue;
default: /* Catch dot and other separators */
/*
* Replace possible comma (which may even
* be not a comma at all: locale-defined).
*/
*z = 0x2e;
if(last_zero == z + 1) { /* leave x.0 */
last_zero++;
}
buflen = last_zero - buf;
*last_zero = '\0';
break;
}
break;
}
}
ret = cb(buf, buflen, app_key);
if(buf != local_buf) FREEMEM(buf);
return (ret < 0) ? -1 : buflen;
}
int
REAL_print(asn_TYPE_descriptor_t *td, const void *sptr, int ilevel,
asn_app_consume_bytes_f *cb, void *app_key) {
const REAL_t *st = (const REAL_t *)sptr;
ssize_t ret;
double d;
(void)td; /* Unused argument */
(void)ilevel; /* Unused argument */
if(!st || !st->buf)
ret = cb("<absent>", 8, app_key);
else if(asn_REAL2double(st, &d))
ret = cb("<error>", 7, app_key);
else
ret = REAL__dump(d, 0, cb, app_key);
return (ret < 0) ? -1 : 0;
}
int
REAL_compare(const asn_TYPE_descriptor_t *td, const void *aptr,
const void *bptr) {
const REAL_t *a = aptr;
const REAL_t *b = bptr;
(void)td;
if(a && b) {
double adbl, bdbl;
int ra, rb;
ra = asn_REAL2double(a, &adbl);
rb = asn_REAL2double(b, &bdbl);
if(ra == 0 && rb == 0) {
if(asn_isnan(adbl)) {
if(asn_isnan(bdbl)) {
return 0;
} else {
return -1;
}
} else if(asn_isnan(bdbl)) {
return 1;
}
/* Value comparison. */
if(adbl < bdbl) {
return -1;
} else if(adbl > bdbl) {
return 1;
} else {
return 0;
}
} else if(ra) {
return -1;
} else {
return 1;
}
} else if(!a) {
return -1;
} else {
return 1;
}
}
asn_enc_rval_t
REAL_encode_xer(asn_TYPE_descriptor_t *td, void *sptr,
int ilevel, enum xer_encoder_flags_e flags,
asn_app_consume_bytes_f *cb, void *app_key) {
REAL_t *st = (REAL_t *)sptr;
asn_enc_rval_t er;
double d;
(void)ilevel;
if(!st || !st->buf || asn_REAL2double(st, &d))
ASN__ENCODE_FAILED;
er.encoded = REAL__dump(d, flags & XER_F_CANONICAL, cb, app_key);
if(er.encoded < 0) ASN__ENCODE_FAILED;
ASN__ENCODED_OK(er);
}
/*
* Decode the chunk of XML text encoding REAL.
*/
static enum xer_pbd_rval
REAL__xer_body_decode(asn_TYPE_descriptor_t *td, void *sptr, const void *chunk_buf, size_t chunk_size) {
REAL_t *st = (REAL_t *)sptr;
double value;
const char *xerdata = (const char *)chunk_buf;
char *endptr = 0;
char *b;
(void)td;
if(!chunk_size) return XPBD_BROKEN_ENCODING;
/*
* Decode an XMLSpecialRealValue: <MINUS-INFINITY>, etc.
*/
if(xerdata[0] == 0x3c /* '<' */) {
size_t i;
for(i = 0; i < sizeof(specialRealValue)
/ sizeof(specialRealValue[0]); i++) {
struct specialRealValue_s *srv = &specialRealValue[i];
double dv;
if(srv->length != chunk_size
|| memcmp(srv->string, chunk_buf, chunk_size))
continue;
/*
* It could've been done using
* (double)srv->dv / real_zero,
* but it summons fp exception on some platforms.
*/
switch(srv->dv) {
case -1: dv = - INFINITY; break;
case 0: dv = NAN; break;
case 1: dv = INFINITY; break;
default: return XPBD_SYSTEM_FAILURE;
}
if(asn_double2REAL(st, dv))
return XPBD_SYSTEM_FAILURE;
return XPBD_BODY_CONSUMED;
}
ASN_DEBUG("Unknown XMLSpecialRealValue");
return XPBD_BROKEN_ENCODING;
}
/*
* Copy chunk into the nul-terminated string, and run strtod.
*/
b = (char *)MALLOC(chunk_size + 1);
if(!b) return XPBD_SYSTEM_FAILURE;
memcpy(b, chunk_buf, chunk_size);
b[chunk_size] = 0; /* nul-terminate */
value = strtod(b, &endptr);
FREEMEM(b);
if(endptr == b) return XPBD_BROKEN_ENCODING;
if(asn_double2REAL(st, value))
return XPBD_SYSTEM_FAILURE;
return XPBD_BODY_CONSUMED;
}
asn_dec_rval_t
REAL_decode_xer(const asn_codec_ctx_t *opt_codec_ctx,
asn_TYPE_descriptor_t *td, void **sptr, const char *opt_mname,
const void *buf_ptr, size_t size) {
return xer_decode_primitive(opt_codec_ctx, td,
sptr, sizeof(REAL_t), opt_mname,
buf_ptr, size, REAL__xer_body_decode);
}
int
asn_REAL2double(const REAL_t *st, double *dbl_value) {
unsigned int octv;
if(!st || !st->buf) {
errno = EINVAL;
return -1;
}
if(st->size == 0) {
*dbl_value = 0;
return 0;
}
octv = st->buf[0]; /* unsigned byte */
switch(octv & 0xC0) {
case 0x40: /* X.690: 8.5.6 a) => 8.5.9 */
/* "SpecialRealValue" */
/* Be liberal in what you accept...
* http://en.wikipedia.org/wiki/Robustness_principle
if(st->size != 1) ...
*/
switch(st->buf[0]) {
case 0x40: /* 01000000: PLUS-INFINITY */
*dbl_value = INFINITY;
return 0;
case 0x41: /* 01000001: MINUS-INFINITY */
*dbl_value = - INFINITY;
return 0;
case 0x42: /* 01000010: NOT-A-NUMBER */
*dbl_value = NAN;
return 0;
case 0x43: /* 01000011: minus zero */
*dbl_value = -0.0;
return 0;
}
errno = EINVAL;
return -1;
case 0x00: { /* X.690: 8.5.7 */
/*
* Decimal. NR{1,2,3} format from ISO 6093.
* NR1: [ ]*[+-]?[0-9]+
* NR2: [ ]*[+-]?([0-9]+\.[0-9]*|[0-9]*\.[0-9]+)
* NR3: [ ]*[+-]?([0-9]+\.[0-9]*|[0-9]*\.[0-9]+)[Ee][+-]?[0-9]+
*/
double d;
char *source = 0;
char *endptr;
int used_malloc = 0;
if(octv == 0 || (octv & 0x3C)) {
/* Remaining values of bits 6 to 1 are Reserved. */
errno = EINVAL;
return -1;
}
/* 1. By contract, an input buffer should be '\0'-terminated.
* OCTET STRING decoder ensures that, as is asn_double2REAL().
* 2. ISO 6093 specifies COMMA as a possible decimal separator.
* However, strtod() can't always deal with COMMA.
* So her we fix both by reallocating, copying and fixing.
*/
if(st->buf[st->size] != '\0' || memchr(st->buf, ',', st->size)) {
const uint8_t *p, *end;
char *b;
b = source = (char *)MALLOC(st->size + 1);
if(!source) return -1;
used_malloc = 1;
/* Copy without the first byte and with 0-termination */
for(p = st->buf + 1, end = st->buf + st->size;
p < end; b++, p++)
*b = (*p == ',') ? '.' : *p;
*b = '\0';
} else {
source = (char *)&st->buf[1];
}
endptr = source;
d = strtod(source, &endptr);
if(*endptr != '\0') {
/* Format is not consistent with ISO 6093 */
if(used_malloc) FREEMEM(source);
errno = EINVAL;
return -1;
}
if(used_malloc) FREEMEM(source);
if(asn_isfinite(d)) {
*dbl_value = d;
return 0;
} else {
errno = ERANGE;
return -1;
}
}
}
/*
* Binary representation.
*/
{
double m;
int32_t expval; /* exponent value */
unsigned int elen; /* exponent value length, in octets */
int scaleF;
int baseF;
uint8_t *ptr;
uint8_t *end;
int sign;
switch((octv & 0x30) >> 4) {
case 0x00: baseF = 1; break; /* base 2 */
case 0x01: baseF = 3; break; /* base 8 */
case 0x02: baseF = 4; break; /* base 16 */
default:
/* Reserved field, can't parse now. */
errno = EINVAL;
return -1;
}
sign = (octv & 0x40); /* bit 7 */
scaleF = (octv & 0x0C) >> 2; /* bits 4 to 3 */
if(st->size <= 1 + (octv & 0x03)) {
errno = EINVAL;
return -1;
}
elen = (octv & 0x03); /* bits 2 to 1; 8.5.6.4 */
if(elen == 0x03) { /* bits 2 to 1 = 11; 8.5.6.4, case d) */
elen = st->buf[1]; /* unsigned binary number */
if(elen == 0 || st->size <= (2 + elen)) {
errno = EINVAL;
return -1;
}
/* FIXME: verify constraints of case d) */
ptr = &st->buf[2];
} else {
ptr = &st->buf[1];
}
/* Fetch the multibyte exponent */
expval = (int)(*(int8_t *)ptr);
if(elen >= sizeof(expval)-1) {
errno = ERANGE;
return -1;
}
end = ptr + elen + 1;
for(ptr++; ptr < end; ptr++)
expval = (expval * 256) + *ptr;
m = 0.0; /* Initial mantissa value */
/* Okay, the exponent is here. Now, what about mantissa? */
end = st->buf + st->size;
for(; ptr < end; ptr++)
m = ldexp(m, 8) + *ptr;
if(0)
ASN_DEBUG("m=%.10f, scF=%d, bF=%d, expval=%d, ldexp()=%f, ldexp()=%f\n",
m, scaleF, baseF, expval,
ldexp(m, expval * baseF + scaleF),
ldexp(m, scaleF) * pow(pow(2, baseF), expval)
);
/*
* (S * N * 2^F) * B^E
* Essentially:
m = ldexp(m, scaleF) * pow(pow(2, baseF), expval);
*/
m = ldexp(m, expval * baseF + scaleF);
if(asn_isfinite(m)) {
*dbl_value = sign ? -m : m;
} else {
errno = ERANGE;
return -1;
}
} /* if(binary_format) */
return 0;
}
/*
* Assume IEEE 754 floating point: standard 64 bit double.
* [1 bit sign] [11 bits exponent] [52 bits mantissa]
*/
int
asn_double2REAL(REAL_t *st, double dbl_value) {
double test = -0.0;
int float_big_endian = *(const char *)&test != 0;
uint8_t buf[16]; /* More than enough for 8-byte dbl_value */
uint8_t dscr[sizeof(dbl_value)]; /* double value scratch pad */
/* Assertion guards: won't even compile, if unexpected double size */
char assertion_buffer1[9 - sizeof(dbl_value)] CC_NOTUSED;
char assertion_buffer2[sizeof(dbl_value) - 7] CC_NOTUSED;
uint8_t *ptr = buf;
uint8_t *mstop; /* Last byte of mantissa */
unsigned int mval; /* Value of the last byte of mantissa */
unsigned int bmsign; /* binary mask with sign */
unsigned int buflen;
unsigned int accum;
int expval;
if(!st) {
errno = EINVAL;
return -1;
}
/*
* ilogb(+-0) returns -INT_MAX or INT_MIN (platform-dependent)
* ilogb(+-inf) returns INT_MAX, logb(+-inf) returns +inf
* ilogb(NaN) returns INT_MIN or INT_MAX (platform-dependent)
*/
expval = ilogb(dbl_value);
if(expval <= -INT_MAX /* Also catches +-0 and maybe isnan() */
|| expval == INT_MAX /* catches isfin() and maybe isnan() */
) {
if(!st->buf || st->size < 2) {
ptr = (uint8_t *)MALLOC(2);
if(!ptr) return -1;
if(st->buf) FREEMEM(st->buf);
st->buf = ptr;
}
/* fpclassify(3) is not portable yet */
if(asn_isnan(dbl_value)) {
st->buf[0] = 0x42; /* NaN */
st->buf[1] = 0;
st->size = 1;
} else if(!asn_isfinite(dbl_value)) {
if(copysign(1.0, dbl_value) < 0.0) {
st->buf[0] = 0x41; /* MINUS-INFINITY */
} else {
st->buf[0] = 0x40; /* PLUS-INFINITY */
}
st->buf[1] = 0;
st->size = 1;
} else {
if(copysign(1.0, dbl_value) >= 0.0) {
/* no content octets: positive zero */
st->buf[0] = 0; /* JIC */
st->size = 0;
} else {
/* Negative zero. #8.5.3, 8.5.9 */
st->buf[0] = 0x43;
st->buf[1] = 0;
st->size = 1;
}
}
return 0;
}
if(float_big_endian) {
uint8_t *s = ((uint8_t *)&dbl_value) + 1;
uint8_t *end = ((uint8_t *)&dbl_value) + sizeof(double);
uint8_t *d;
bmsign = 0x80 | ((s[-1] >> 1) & 0x40); /* binary mask & - */
for(mstop = d = dscr; s < end; d++, s++) {
*d = *s;
if(*d) mstop = d;
}
} else {
uint8_t *s = ((uint8_t *)&dbl_value) + sizeof(dbl_value) - 2;
uint8_t *start = ((uint8_t *)&dbl_value);
uint8_t *d;
bmsign = 0x80 | ((s[1] >> 1) & 0x40); /* binary mask & - */
for(mstop = d = dscr; s >= start; d++, s--) {
*d = *s;
if(*d) mstop = d;
}
}
/* Remove parts of the exponent, leave mantissa and explicit 1. */
dscr[0] = 0x10 | (dscr[0] & 0x0f);
/* Adjust exponent in a very unobvious way */
expval -= 8 * ((mstop - dscr) + 1) - 4;
/* This loop ensures DER conformance by forcing mantissa odd: 11.3.1 */
mval = *mstop;
if(mval && !(mval & 1)) {
int shift_count = 1;
int ishift;
uint8_t *mptr;
/*
* Figure out what needs to be done to make mantissa odd.
*/
if(!(mval & 0x0f)) /* Speed-up a little */
shift_count = 4;
while(((mval >> shift_count) & 1) == 0)
shift_count++;
ishift = 8 - shift_count;
accum = 0;
/* Go over the buffer, shifting it shift_count bits right. */
for(mptr = dscr; mptr <= mstop; mptr++) {
mval = *mptr;
*mptr = accum | (mval >> shift_count);
accum = mval << ishift;
}
/* Adjust exponent appropriately. */
expval += shift_count;
}
if(expval < 0) {
if((expval >> 7) == -1) {
*ptr++ = bmsign | 0x00;
*ptr++ = expval;
} else if((expval >> 15) == -1) {
*ptr++ = bmsign | 0x01;
*ptr++ = expval >> 8;
*ptr++ = expval;
} else {
*ptr++ = bmsign | 0x02;
*ptr++ = expval >> 16;
*ptr++ = expval >> 8;
*ptr++ = expval;
}
} else if(expval <= 0x7f) {
*ptr++ = bmsign | 0x00;
*ptr++ = expval;
} else if(expval <= 0x7fff) {
*ptr++ = bmsign | 0x01;
*ptr++ = expval >> 8;
*ptr++ = expval;
} else {
assert(expval <= 0x7fffff);
*ptr++ = bmsign | 0x02;
*ptr++ = expval >> 16;
*ptr++ = expval >> 8;
*ptr++ = expval;
}
buflen = (mstop - dscr) + 1;
memcpy(ptr, dscr, buflen);
ptr += buflen;
buflen = ptr - buf;
ptr = (uint8_t *)MALLOC(buflen + 1);
if(!ptr) return -1;
memcpy(ptr, buf, buflen);
buf[buflen] = 0; /* JIC */
if(st->buf) FREEMEM(st->buf);
st->buf = ptr;
st->size = buflen;
return 0;
}
int CC_ATTR_NO_SANITIZE("float-cast-overflow")
asn_double2float(double d, float *outcome) {
float f = d;
*outcome = f;
if(asn_isfinite(d) == asn_isfinite(f)) {
return 0;
} else {
return -1;
}
}
#ifndef ASN_DISABLE_OER_SUPPORT
/*
* Encode as Canonical OER
*/
asn_enc_rval_t
REAL_encode_oer(asn_TYPE_descriptor_t *td,
const asn_oer_constraints_t *constraints, void *sptr,
asn_app_consume_bytes_f *cb, void *app_key) {
const REAL_t *st = sptr;
asn_enc_rval_t er;
ssize_t len_len;
if(!st || !st->buf || !td)
ASN__ENCODE_FAILED;
if(!constraints) constraints = td->encoding_constraints.oer_constraints;
if(constraints && constraints->value.width != 0) {
/* If we're constrained to a narrow float/double representation, we
* shouldn't have ended up using REAL. Expecting NativeReal. */
ASN__ENCODE_FAILED;
}
/* Encode a fake REAL */
len_len = oer_serialize_length(st->size, cb, app_key);
if(len_len < 0 || cb(st->buf, st->size, app_key) < 0) {
ASN__ENCODE_FAILED;
} else {
er.encoded = len_len + st->size;
ASN__ENCODED_OK(er);
}
}
asn_dec_rval_t
REAL_decode_oer(const asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td,
const asn_oer_constraints_t *constraints, void **sptr,
const void *ptr, size_t size) {
asn_dec_rval_t ok = {RC_OK, 0};
REAL_t *st;
uint8_t *buf;
ssize_t len_len;
size_t real_body_len;
(void)opt_codec_ctx;
if(!constraints) constraints = td->encoding_constraints.oer_constraints;
if(constraints && constraints->value.width != 0) {
/* If we're constrained to a narrow float/double representation, we
* shouldn't have ended up using REAL. Expecting NativeReal. */
ASN__DECODE_FAILED;
}
len_len = oer_fetch_length(ptr, size, &real_body_len);
if(len_len < 0) ASN__DECODE_FAILED;
if(len_len == 0) ASN__DECODE_STARVED;
ptr = (const char *)ptr + len_len;
size -= len_len;
if(real_body_len > size) ASN__DECODE_STARVED;
buf = CALLOC(1, real_body_len + 1);
if(!buf) ASN__DECODE_FAILED;
if(!(st = *sptr)) {
st = (*sptr = CALLOC(1, sizeof(REAL_t)));
if(!st) {
FREEMEM(buf);
ASN__DECODE_FAILED;
}
} else {
FREEMEM(st->buf);
}
memcpy(buf, ptr, real_body_len);
buf[real_body_len] = '\0';
st->buf = buf;
st->size = real_body_len;
ok.consumed = len_len + real_body_len;
return ok;
}
#endif /* ASN_DISABLE_OER_SUPPORT */
#ifndef ASN_DISABLE_PER_SUPPORT
asn_dec_rval_t
REAL_decode_uper(const asn_codec_ctx_t *opt_codec_ctx, asn_TYPE_descriptor_t *td,
const asn_per_constraints_t *constraints, void **sptr,
asn_per_data_t *pd) {
(void)constraints; /* No PER visible constraints */
return OCTET_STRING_decode_uper(opt_codec_ctx, td, 0, sptr, pd);
}
asn_enc_rval_t
REAL_encode_uper(asn_TYPE_descriptor_t *td,
const asn_per_constraints_t *constraints, void *sptr,
asn_per_outp_t *po) {
(void)constraints; /* No PER visible constraints */
return OCTET_STRING_encode_uper(td, 0, sptr, po);
}
#endif /* ASN_DISABLE_PER_SUPPORT */
asn_random_fill_result_t
REAL_random_fill(const asn_TYPE_descriptor_t *td, void **sptr,
const asn_encoding_constraints_t *constraints,
size_t max_length) {
asn_random_fill_result_t result_ok = {ARFILL_OK, 1};
asn_random_fill_result_t result_failed = {ARFILL_FAILED, 0};
asn_random_fill_result_t result_skipped = {ARFILL_SKIPPED, 0};
static const double values[] = {
0, -0.0, -1, 1, -M_E, M_E, -3.14, 3.14, -M_PI, M_PI, -255, 255,
/* 2^51 */
-2251799813685248.0, 2251799813685248.0,
/* 2^52 */
-4503599627370496.0, 4503599627370496.0,
/* 2^100 */
-1267650600228229401496703205376.0, 1267650600228229401496703205376.0,
-FLT_MIN, FLT_MIN,
-FLT_MAX, FLT_MAX,
-DBL_MIN, DBL_MIN,
-DBL_MAX, DBL_MAX,
#ifdef FLT_TRUE_MIN
-FLT_TRUE_MIN, FLT_TRUE_MIN,
#endif
#ifdef DBL_TRUE_MIN
-DBL_TRUE_MIN, DBL_TRUE_MIN,
#endif
INFINITY, -INFINITY, NAN};
REAL_t *st;
double d;
(void)constraints;
if(max_length == 0) return result_skipped;
d = values[asn_random_between(0, sizeof(values) / sizeof(values[0]) - 1)];
if(*sptr) {
st = *sptr;
} else {
st = (REAL_t*)(*sptr = CALLOC(1, sizeof(REAL_t)));
if(!st) {
return result_failed;
}
}
if(asn_double2REAL(st, d)) {
if(st == *sptr) {
ASN_STRUCT_RESET(*td, st);
} else {
ASN_STRUCT_FREE(*td, st);
}
return result_failed;
}
result_ok.length = st->size;
return result_ok;
}
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