mirror of https://gerrit.osmocom.org/asn1c
193 lines
7.1 KiB
C
193 lines
7.1 KiB
C
#define EMIT_ASN_DEBUG 1
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#include <REAL.c>
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#include <ber_codec_prim.c>
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#include <ber_decoder.c>
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#include <ber_tlv_length.c>
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#include <ber_tlv_tag.c>
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#include <der_encoder.c>
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#include <constraints.c>
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static char reconstructed[2][512];
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static int reconstr_lens[2];
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static int
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callback(const void *buffer, size_t size, void *app_key) {
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char *buf = reconstructed[app_key ? 1 : 0];
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int *len = &reconstr_lens[app_key ? 1 : 0];
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if(*len + size >= sizeof(reconstructed[0]))
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return -1;
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memcpy(buf + *len, buffer, size);
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*len += size;
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return 0;
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}
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static void
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check_str_repr(double d, const char *sample, const char *canonical_sample) {
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ssize_t s1, s2;
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reconstr_lens[1] = reconstr_lens[0] = 0;
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s1 = REAL__dump(d, 0, callback, 0);
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assert(s1 < sizeof(reconstructed[0]));
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assert(s1 == reconstr_lens[0]);
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reconstructed[0][s1] = '\0';
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s2 = REAL__dump(d, 1, callback, (void *)1);
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assert(s2 < sizeof(reconstructed[1]));
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assert(s2 == reconstr_lens[1]);
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reconstructed[1][s2] = '\0';
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if(sample) {
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printf("Checking [%s] against [%s]\n",
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reconstructed[0], sample);
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assert(!strcmp(reconstructed[0], sample));
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}
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if(canonical_sample) {
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printf("Checking [%s] against [%s] (canonical)\n",
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reconstructed[1], canonical_sample);
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assert(!strcmp(reconstructed[1], canonical_sample));
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}
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}
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static void
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check(REAL_t *rn, double orig_dbl, const char *sample, const char *canonical_sample) {
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double val;
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uint8_t *p, *end;
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int ret;
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printf("double value %.12f [", orig_dbl);
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for(p = (uint8_t *)&orig_dbl, end = p + sizeof(double); p < end ; p++)
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printf("%02x", *p);
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printf("] (ilogb %d)\n", ilogb(orig_dbl));
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val = frexp(orig_dbl, &ret);
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printf("frexp(%f, %d): [", val, ret);
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for(p = (uint8_t *)&val, end = p + sizeof(double); p < end ; p++)
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printf("%02x", *p);
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printf("]\n");
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ret = asn_double2REAL(rn, orig_dbl);
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assert(ret == 0);
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printf("converted into [");
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for(p = rn->buf, end = p + rn->size; p < end; p++)
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printf("%02x", *p);
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printf("]: %d\n", rn->size);
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ret = asn_REAL2double(rn, &val);
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assert(ret == 0);
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printf("and back to double: [");
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for(p = (uint8_t *)&val, end = p + sizeof(double); p < end ; p++)
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printf("%02x", *p);
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printf("] (ilogb %d)\n", ilogb(val));
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printf("%.12f vs %.12f\n", orig_dbl, val);
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assert(orig_dbl == val || (isnan(orig_dbl) && isnan(val)));
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printf("OK\n");
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check_str_repr(val, sample, canonical_sample);
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}
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uint8_t buf_1_0[] = { 0x80, 0xcc, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
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uint8_t buf_1_1[] = { 0x80, 0xcc, 0x11, 0x99, 0x99, 0x99, 0x99, 0x99, 0x9a };
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uint8_t buf_3_14[] = { 0x80, 0xcd, 0x19, 0x1e, 0xb8, 0x51, 0xeb, 0x85, 0x1f };
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/* These ones are very interesting! It checks mantissa overflow! */
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uint8_t buf_mo1[] = { 0xC0, 0xc5, 0x19, 0x1e, 0xb8, 0x51, 0xeb, 0x85, 0x1f,3};
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uint8_t buf_mo2[] = { 0x80, 0xbd, 0x19, 0x1e, 0xb8, 0x51, 0xeb, 0x85, 0x1f,3,2};
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static void
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check_buf(uint8_t *buf, size_t bufsize, double verify, const char *sample, const char *canonical_sample) {
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REAL_t rn;
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double val;
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uint8_t *p, *end;
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int ret;
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printf("verify double value %.12f [", verify);
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for(p = (uint8_t *)&verify, end = p + sizeof(double); p < end ; p++)
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printf("%02x", *p);
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printf("] (ilogb %d)\n", ilogb(verify));
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rn.buf = 0;
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rn.size = 0;
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ret = asn_double2REAL(&rn, verify);
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assert(ret == 0);
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printf("canonical DER: [");
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for(p = rn.buf, end = p + rn.size; p < end; p++)
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printf("%02x", *p);
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printf("]\n");
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rn.buf = buf;
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rn.size = bufsize;
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printf("received as: [");
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for(p = rn.buf, end = p + rn.size; p < end; p++)
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printf("%02x", *p);
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printf("]\n");
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ret = asn_REAL2double(&rn, &val);
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assert(ret == 0);
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printf("%.12f vs %.12f\n", verify, val);
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assert(val == verify);
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check_str_repr(val, sample, canonical_sample);
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}
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int
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main() {
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REAL_t rn;
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static const double zero = 0.0;
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memset(&rn, 0, sizeof(rn));
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check(&rn, 0.0, "0", "0");
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check(&rn, -0.0, "-0", "-0"); /* minus-zero */
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check(&rn, zero/zero, "<NOT-A-NUMBER/>", "<NOT-A-NUMBER/>");
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check(&rn, 1.0/zero, "<PLUS-INFINITY/>", "<PLUS-INFINITY/>");
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check(&rn, -1.0/zero, "<MINUS-INFINITY/>", "<MINUS-INFINITY/>");
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check(&rn, 1.0, "1.0", "1.0E0");
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check(&rn, -1.0, "-1.0", "-1.0E0");
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check(&rn, 1.5, "1.5", "1.5E0");
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check(&rn, 0.1, "0.1", "1.0E-1");
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check(&rn, 0.33333, "0.33333", "3.3333E-1");
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check(&rn, 2, "2.0", "2.0E0");
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check(&rn, 2.1, "2.1", "2.1E0");
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check(&rn, 3, "3.0", "3.0E0");
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check(&rn, 3.1, "3.1", "3.1E0");
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check(&rn, 3.14, "3.14", "3.14E0");
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check(&rn, 3.1415, "3.1415", "3.1415E0");
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check(&rn, 3.141592, "3.141592", "3.141592E0");
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check(&rn, 3.14159265, "3.14159265", "3.14159265E0");
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check(&rn, -3.14159265, "-3.14159265", "-3.14159265E0");
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check(&rn, 14159265.0, "14159265.0", "1.4159265E7");
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check(&rn, -123456789123456789.0, "-123456789123456784.0", "-1.234567891234568E17");
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check(&rn, 0.00000000001, "0.0", "9.999999999999999E-12");
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check(&rn, 0.00000000002, "0.0", "2.0E-11");
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check(&rn, 0.00000000009, "0.0", "9.0E-11");
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check(&rn, 0.0000000000000000000001, "0.0", "1.0E-22");
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check(&rn, 0.000000000000000000000000000001, "0.0", "1.0E-30"); /* proved 2B a problem */
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check(&rn,-0.000000000000000000000000000001, "-0.0", "-1.0E-30"); /* proved 2B a problem */
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check(&rn, 0.0000000000010000000001000000000001, 0, 0);
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check(&rn, 0.00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, 0, 0);
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check(&rn, 0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, 0, 0);
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check(&rn,-0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, 0, 0);
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check(&rn,-3.33333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333, 0, 0);
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check(&rn, 0.0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000033333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333333, 0, 0);
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check(&rn, -0.00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001, 0, 0);
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check_buf(buf_1_0, sizeof(buf_1_0), 1.0, "1.0", "1.0E0");
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check_buf(buf_1_1, sizeof(buf_1_1), 1.1, "1.1", "1.1E0");
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check_buf(buf_3_14, sizeof(buf_3_14), 3.14, "3.14", "3.14E0");
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check_buf(buf_mo1, sizeof(buf_mo1), -3.14, "-3.14", "-3.14E0");
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check_buf(buf_mo2, sizeof(buf_mo2), 3.14, "3.14", "3.14E0");
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return 0;
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}
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