56 lines
1.2 KiB
Nim
56 lines
1.2 KiB
Nim
import ../stint, times
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# Warmup on normal int
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var start = cpuTime()
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block:
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var foo = 123
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for i in 0 ..< 10_000_000:
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foo += i*i mod 456
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foo = foo mod 789
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# Compiler shouldn't optimize away the results as cpuTime rely on sideeffects
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var stop = cpuTime()
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echo "Warmup: " & $(stop - start) & "s"
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####################################
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start = cpuTime()
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block:
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var foo = 123.u256
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for i in 0 ..< 10_000_000:
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foo += i.u256 * i.u256 mod 456.u256
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foo = foo mod 789.u256
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stop = cpuTime()
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echo "Library: " & $(stop - start) & "s"
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when defined(bench_ttmath):
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# need C++
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import ttmath
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template tt_u256(a: int): UInt[256] = ttmath.u256(a.uint)
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start = cpuTime()
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block:
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var foo = 123.tt_u256
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for i in 0 ..< 10_000_000:
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foo += i.tt_u256 * i.tt_u256 mod 456.tt_u256
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foo = foo mod 789.tt_u256
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stop = cpuTime()
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echo "TTMath: " & $(stop - start) & "s"
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# On my i5-5257 broadwell with the flags:
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# nim c -d:release -d:bench_ttmath
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# Warmup: 0.04060799999999999s
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# Library: 0.9576759999999999s
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# TTMath: 0.758443s
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# After PR #54 for compile-time evaluation
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# which includes loop unrolling but may bloat the code
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# Warmup: 0.03993500000000001s
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# Library: 0.848464s
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