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No public description #2129

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12 changes: 12 additions & 0 deletions runtime/standard/arithmetic_functions.cc
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Original file line number Diff line number Diff line change
Expand Up @@ -14,6 +14,7 @@

#include "runtime/standard/arithmetic_functions.h"

#include <cmath>
#include <cstdint>
#include <limits>

Expand Down Expand Up @@ -139,6 +140,17 @@ Value Div<double>(double v0, double v1) {
static_assert(std::numeric_limits<double>::is_iec559,
"Division by zero for doubles must be supported");

if (v1 == 0.0) {
if (v0 == 0.0 || std::isnan(v0)) {
return DoubleValue(std::numeric_limits<double>::quiet_NaN());
}
double inf = std::numeric_limits<double>::infinity();
if (std::signbit(v0) != std::signbit(v1)) {
return DoubleValue(-inf);
}
return DoubleValue(inf);
}

// For double, division will result in +/- inf
return DoubleValue(v0 / v1);
}
Expand Down
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