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Do you think operator < is faster than <= in C/C++? No, the operator < takes same time to execute as operator <= takes. Both operators execute similarly and take same execution time to perform the execution of instructions.
What I meant is that the CPU could detect two values are not equal without looking at all bits, but it doesn't matter whether you use == or != to find that they are not equal, so the two operators are exactly equivalent. There is no reason to think one is faster than the other.
So === faster than == in Javascript === compares if the values and the types are the same. == compares if the values are the same, but it also does type conversions in the comparison. Those type conversions make == slower than ===.
TL;DR answer For most combinations of architecture, compiler and language, < will not be faster than <= .
I am using the following code to do the test and it seems like < is slower that >=., does anyone know why?
import timeit
s = """
x=5
if x<0: pass
"""
t = timeit.Timer(stmt=s)
print "%.2f usec/pass" % (1000000 * t.timeit(number=100000)/100000)
#0.21 usec/pass
z = """
x=5
if x>=0: pass
"""
t2 = timeit.Timer(stmt=z)
print "%.2f usec/pass" % (1000000 * t2.timeit(number=100000)/100000)
#0.18 usec/pass
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