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🚑 fix for #416

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This commit is contained in:
Niels Lohmann 2017-01-03 23:52:01 +01:00
parent 767637877b
commit cdd3b5a68c
3 changed files with 36 additions and 18 deletions
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12
src/json.hpp
View file

@ -6938,11 +6938,10 @@ class basic_json
case 0xca: // float 32
{
// copy bytes in reverse order into the double variable
check_length(v.size(), sizeof(float), 1);
float res;
for (size_t byte = 0; byte < sizeof(float); ++byte)
{
reinterpret_cast<uint8_t*>(&res)[sizeof(float) - byte - 1] = v[current_idx + 1 + byte];
reinterpret_cast<uint8_t*>(&res)[sizeof(float) - byte - 1] = v.at(current_idx + 1 + byte);
}
idx += sizeof(float); // skip content bytes
return res;
@ -6951,11 +6950,10 @@ class basic_json
case 0xcb: // float 64
{
// copy bytes in reverse order into the double variable
check_length(v.size(), sizeof(double), 1);
double res;
for (size_t byte = 0; byte < sizeof(double); ++byte)
{
reinterpret_cast<uint8_t*>(&res)[sizeof(double) - byte - 1] = v[current_idx + 1 + byte];
reinterpret_cast<uint8_t*>(&res)[sizeof(double) - byte - 1] = v.at(current_idx + 1 + byte);
}
idx += sizeof(double); // skip content bytes
return res;
@ -7549,11 +7547,10 @@ class basic_json
case 0xfa: // Single-Precision Float (four-byte IEEE 754)
{
// copy bytes in reverse order into the float variable
check_length(v.size(), sizeof(float), 1);
float res;
for (size_t byte = 0; byte < sizeof(float); ++byte)
{
reinterpret_cast<uint8_t*>(&res)[sizeof(float) - byte - 1] = v[current_idx + 1 + byte];
reinterpret_cast<uint8_t*>(&res)[sizeof(float) - byte - 1] = v.at(current_idx + 1 + byte);
}
idx += sizeof(float); // skip content bytes
return res;
@ -7561,12 +7558,11 @@ class basic_json
case 0xfb: // Double-Precision Float (eight-byte IEEE 754)
{
check_length(v.size(), sizeof(double), 1);
// copy bytes in reverse order into the double variable
double res;
for (size_t byte = 0; byte < sizeof(double); ++byte)
{
reinterpret_cast<uint8_t*>(&res)[sizeof(double) - byte - 1] = v[current_idx + 1 + byte];
reinterpret_cast<uint8_t*>(&res)[sizeof(double) - byte - 1] = v.at(current_idx + 1 + byte);
}
idx += sizeof(double); // skip content bytes
return res;

15
src/json.hpp.re2c
View file

@ -6938,11 +6938,10 @@ class basic_json
case 0xca: // float 32
{
// copy bytes in reverse order into the double variable
check_length(v.size(), sizeof(float), 1);
float res;
for (size_t byte = 0; byte < sizeof(float); ++byte)
{
reinterpret_cast<uint8_t*>(&res)[sizeof(float) - byte - 1] = v[current_idx + 1 + byte];
reinterpret_cast<uint8_t*>(&res)[sizeof(float) - byte - 1] = v.at(current_idx + 1 + byte);
}
idx += sizeof(float); // skip content bytes
return res;
@ -6951,11 +6950,10 @@ class basic_json
case 0xcb: // float 64
{
// copy bytes in reverse order into the double variable
check_length(v.size(), sizeof(double), 1);
double res;
for (size_t byte = 0; byte < sizeof(double); ++byte)
{
reinterpret_cast<uint8_t*>(&res)[sizeof(double) - byte - 1] = v[current_idx + 1 + byte];
reinterpret_cast<uint8_t*>(&res)[sizeof(double) - byte - 1] = v.at(current_idx + 1 + byte);
}
idx += sizeof(double); // skip content bytes
return res;
@ -7517,7 +7515,6 @@ class basic_json
case 0xf9: // Half-Precision Float (two-byte IEEE 754)
{
check_length(v.size(), 2, 1);
idx += 2; // skip two content bytes
// code from RFC 7049, Appendix D, Figure 3:
@ -7527,7 +7524,7 @@ class basic_json
// include at least decoding support for them even without such
// support. An example of a small decoder for half-precision
// floating-point numbers in the C language is shown in Fig. 3.
const int half = (v[current_idx + 1] << 8) + v[current_idx + 2];
const int half = (v.at(current_idx + 1) << 8) + v.at(current_idx + 2);
const int exp = (half >> 10) & 0x1f;
const int mant = half & 0x3ff;
double val;
@ -7549,11 +7546,10 @@ class basic_json
case 0xfa: // Single-Precision Float (four-byte IEEE 754)
{
// copy bytes in reverse order into the float variable
check_length(v.size(), sizeof(float), 1);
float res;
for (size_t byte = 0; byte < sizeof(float); ++byte)
{
reinterpret_cast<uint8_t*>(&res)[sizeof(float) - byte - 1] = v[current_idx + 1 + byte];
reinterpret_cast<uint8_t*>(&res)[sizeof(float) - byte - 1] = v.at(current_idx + 1 + byte);
}
idx += sizeof(float); // skip content bytes
return res;
@ -7561,12 +7557,11 @@ class basic_json
case 0xfb: // Double-Precision Float (eight-byte IEEE 754)
{
check_length(v.size(), sizeof(double), 1);
// copy bytes in reverse order into the double variable
double res;
for (size_t byte = 0; byte < sizeof(double); ++byte)
{
reinterpret_cast<uint8_t*>(&res)[sizeof(double) - byte - 1] = v[current_idx + 1 + byte];
reinterpret_cast<uint8_t*>(&res)[sizeof(double) - byte - 1] = v.at(current_idx + 1 + byte);
}
idx += sizeof(double); // skip content bytes
return res;