mirror of
https://github.com/nim-lang/Nim.git
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* ttables: smaller table, 5x speedup * thavlak: less iterations, less loops; 30% speedup * tasyncclosestall: shorter timeout; 35% speedup * gcleak4: less iterations, 2x speedup * ttimes: remove deprecated stuff * tdangerisrelease: remove cpp backend, 3x speedup * tfrexp1: smaller range, 2x speedup * trtree: fix warnings, less iterations, 6x speedup * tasyncawait_cyclebreaker: smaller swarm size; 2x speedup * trealloc: smaller number of iterations; 10x speedup * towned_binary_tree: less iterations, 4x speedup * tclosure: remove unused code, less iterations; 2x speedup * twaitany: less durations; 1.4x speedup * tasync_misc: less iterations, 2x speedup * t8535: smaller sleep, 1.5x speedup * tmanyjoin: smaller sleep, 2x speedup * t12221: shorter sleeps, removed two slower tests; 1.6x speedup * tfuturestream: smaller sleep; 1.5x speedup * growobjcrash: less iterations; 2x speedup * ttryrecv: smaller sleep; 1.5x speedup * treusetvar: less threads; 2x speedup * delete tthreadanalysis2, basically a duplicate of tthreadanalysis * t7758: less iterations, 1.5x speedup * tasyncawait: smaller swarm, less messages; 1.5x speedup * tjsandnativeasync: smaller sleep, 1.5x speedup * tpendingcheck: smaller sleep, 1.5x speedup * remove rodfiles test category * move tseq from its own category to 'collections' category * remove unneeded tests and helpers from 'assert' category * stdlib: merge tbitops2 into tbitops * remove 'trepr2' from 'stdlib' cat * merge 'tstreams' into one file * remove 'tinefficient_const_table' from 'ccbugs' cat * merge 'tcollections_to_string' into 'tcollections' * tblocking_channel: smaller sleep, small speedup * tconvexhull: less iterartions; 1.2x speedup * merge 'tdeepcopy2' into 'tdeepcopy' * merge 'tdisjoint_slice2' into 'tdisjoint_slice1' * tmissing_deepcopy: smaller sequence * tsendtwice: smaller arrays; 5x speedup * remove 'tindexerrorformatbounds' * disable multimethod tests * remove 'gc:none' and 'refc' without 'd:useRealtimeGC' from gc tests * koch.nim: bootstrap just with '-d:release', no need for 'csource' * add github workflow for documentation * testament: no need for 8 sub-second decimals
47 lines
1.3 KiB
Nim
47 lines
1.3 KiB
Nim
discard """
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targets: "js c c++"
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output: '''ok'''
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"""
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import math
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const manualTest = false
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when manualTest:
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import strformat
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proc frexp_test(lo, hi, step: float64) =
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var exp: int
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var frac: float64
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var eps = 1e-15.float64
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var x:float64 = lo
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while x <= hi:
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frac = frexp(x.float, exp)
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let rslt = pow(2.0, float(exp)) * frac
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doAssert(abs(rslt - x) < eps)
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when manualTest:
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echo fmt("x: {x:10.3f} exp: {exp:4d} frac: {frac:24.20f} check: {$(abs(rslt - x) < eps):-5s} {rslt: 9.3f}")
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x += step
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when manualTest:
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var exp: int
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var frac: float64
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for flval in [1.7976931348623157e+308, -1.7976931348623157e+308, # max, min float64
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3.4028234663852886e+38, -3.4028234663852886e+38, # max, min float32
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4.9406564584124654e-324, -4.9406564584124654e-324, # smallest/largest positive/negative float64
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1.4012984643248171e-45, -1.4012984643248171e-45, # smallest/largest positive/negative float32
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2.2250738585072014e-308, 1.1754943508222875e-38]: # smallest normal float64/float32
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frac = frexp(flval, exp)
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echo fmt("{flval:25.16e}, {exp: 6d}, {frac: .20f} {frac * pow(2.0, float(exp)): .20e}")
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frexp_test(-1000.0, 1000.0, 0.0125)
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else:
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frexp_test(-200000.0, 200000.0, 0.125)
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echo "ok"
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