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Fix NaN and infinity detection #31

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Fix NaN and infinity detection #31

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6 changes: 4 additions & 2 deletions jim2.h
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Original file line number Diff line number Diff line change
Expand Up @@ -210,8 +210,10 @@ void jim_integer(Jim *jim, long long int x)

static int is_nan_or_inf(double x)
{
unsigned long long int mask = (1ULL << 11ULL) - 1ULL;
return (((*(unsigned long long int*) &x) >> 52ULL) & mask) == mask;
unsigned long long bits;
memcpy(&bits, &x, sizeof(bits));

return ((bits >> 52ULL) & 0x7ffULL) == 0x7ffULL;
}

void jim_float(Jim *jim, double x, int precision)
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