v/vlib/math/hypot.v

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module math
2022-05-20 07:45:54 +02:00
// hypot returns the hypotenuse of the triangle give two sides
pub fn hypot(x f64, y f64) f64 {
if is_inf(x, 0) || is_inf(y, 0) {
return inf(1)
}
if is_nan(x) || is_nan(y) {
return nan()
}
mut result := 0.0
if x != 0.0 || y != 0.0 {
abs_x := abs(x)
abs_y := abs(y)
min, max := minmax(abs_x, abs_y)
rat := min / max
root_term := sqrt(1.0 + rat * rat)
if max < max_f64 / root_term {
result = max * root_term
} else {
panic('overflow in hypot_e function')
}
}
return result
}