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title = "μ function"
author = "Yann Herklotz"
tags = []
categories = []
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The μ function only appears in loop headers, and it selects the initial
and loop carried values for the variables in the loop. It does not come
with a condition, and instead works exactly like a φ function, where the
left hand value is the initial one, and the right hand value is the
loop-carried value.
x2 = μ(x1, x3)
Means that the initial value for x2 is x1, and that the consequent
values for x2 is the value of x3.
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