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by burnt-resistor
59 days ago
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Numeric comparison implies subtraction or similar a - b sign and zero extraction at some lower level (in an ALU micro-op perhaps), so that's duplicated effort of a - b unless it can be optimized away. match a - b {
d if d >= 0.0 => d < f64::EPSILON,
d => d >= -f64::EPSILON, /* true if -EPSILON to -0.0 */
}
https://godbolt.org/z/71PGzd7oa |
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