16 lines
419 B
Go
16 lines
419 B
Go
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package math
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import "github.com/goplus/llgo/internal/runtime/goarch"
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const MaxUintptr = ^uintptr(0)
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// MulUintptr returns a * b and whether the multiplication overflowed.
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// On supported platforms this is an intrinsic lowered by the compiler.
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func MulUintptr(a, b uintptr) (uintptr, bool) {
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if a|b < 1<<(4*goarch.PtrSize) || a == 0 {
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return a * b, false
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}
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overflow := b > MaxUintptr/a
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return a * b, overflow
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}
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