Move Decimal from the sandbox into production.
diff --git a/Lib/test/decimaltestdata/power.decTest b/Lib/test/decimaltestdata/power.decTest
new file mode 100644
index 0000000..d7357e8
--- /dev/null
+++ b/Lib/test/decimaltestdata/power.decTest
@@ -0,0 +1,651 @@
+----------------------------------------------------------------------
+-- power.decTest -- decimal exponentiation --
+-- Copyright (c) IBM Corporation, 1981, 2003. All rights reserved. --
+------------------------------------------------------------------------
+-- Please see the document "General Decimal Arithmetic Testcases" --
+-- at http://www2.hursley.ibm.com/decimal for the description of --
+-- these testcases. --
+-- --
+-- These testcases are experimental ('beta' versions), and they --
+-- may contain errors. They are offered on an as-is basis. In --
+-- particular, achieving the same results as the tests here is not --
+-- a guarantee that an implementation complies with any Standard --
+-- or specification. The tests are not exhaustive. --
+-- --
+-- Please send comments, suggestions, and corrections to the author: --
+-- Mike Cowlishaw, IBM Fellow --
+-- IBM UK, PO Box 31, Birmingham Road, Warwick CV34 5JL, UK --
+-- mfc@uk.ibm.com --
+------------------------------------------------------------------------
+version: 2.38
+
+-- This set of testcases tests raising numbers to an integer power only.
+-- If arbitrary powers were supported, 1 ulp differences would be
+-- permitted.
+
+extended: 1
+precision: 9
+rounding: half_up
+maxExponent: 999
+minexponent: -999
+
+-- base checks. Note 0**0 is an error.
+powx001 power '0' '0' -> NaN Invalid_operation
+powx002 power '0' '1' -> '0'
+powx003 power '0' '2' -> '0'
+powx004 power '1' '0' -> '1'
+powx005 power '1' '1' -> '1'
+powx006 power '1' '2' -> '1'
+
+powx010 power '2' '0' -> '1'
+powx011 power '2' '1' -> '2'
+powx012 power '2' '2' -> '4'
+powx013 power '2' '3' -> '8'
+powx014 power '2' '4' -> '16'
+powx015 power '2' '5' -> '32'
+powx016 power '2' '6' -> '64'
+powx017 power '2' '7' -> '128'
+powx018 power '2' '8' -> '256'
+powx019 power '2' '9' -> '512'
+powx020 power '2' '10' -> '1024'
+powx021 power '2' '11' -> '2048'
+powx022 power '2' '12' -> '4096'
+powx023 power '2' '15' -> '32768'
+powx024 power '2' '16' -> '65536'
+powx025 power '2' '31' -> '2.14748365E+9' Inexact Rounded
+-- NB 0 not stripped in next
+powx026 power '2' '32' -> '4.29496730E+9' Inexact Rounded
+precision: 10
+powx027 power '2' '31' -> '2147483648'
+powx028 power '2' '32' -> '4294967296'
+precision: 9
+
+powx030 power '3' '2' -> 9
+powx031 power '4' '2' -> 16
+powx032 power '5' '2' -> 25
+powx033 power '6' '2' -> 36
+powx034 power '7' '2' -> 49
+powx035 power '8' '2' -> 64
+powx036 power '9' '2' -> 81
+powx037 power '10' '2' -> 100
+powx038 power '11' '2' -> 121
+powx039 power '12' '2' -> 144
+
+powx040 power '3' '3' -> 27
+powx041 power '4' '3' -> 64
+powx042 power '5' '3' -> 125
+powx043 power '6' '3' -> 216
+powx044 power '7' '3' -> 343
+
+powx050 power '10' '0' -> 1
+powx051 power '10' '1' -> 10
+powx052 power '10' '2' -> 100
+powx053 power '10' '3' -> 1000
+powx054 power '10' '4' -> 10000
+powx055 power '10' '5' -> 100000
+powx056 power '10' '6' -> 1000000
+powx057 power '10' '7' -> 10000000
+powx058 power '10' '8' -> 100000000
+powx059 power '10' '9' -> 1.00000000E+9 Rounded
+powx060 power '10' '22' -> 1.00000000E+22 Rounded
+powx061 power '10' '77' -> 1.00000000E+77 Rounded
+powx062 power '10' '99' -> 1.00000000E+99 Rounded
+
+maxexponent: 999999999
+minexponent: -999999999
+powx063 power '10' '999999999' -> '1.00000000E+999999999' Rounded
+powx064 power '10' '999999998' -> '1.00000000E+999999998' Rounded
+powx065 power '10' '999999997' -> '1.00000000E+999999997' Rounded
+powx066 power '10' '333333333' -> '1.00000000E+333333333' Rounded
+
+powx070 power '0.3' '0' -> '1'
+powx071 power '0.3' '1' -> '0.3'
+powx072 power '0.3' '1.00' -> '0.3'
+powx073 power '0.3' '2.00' -> '0.09'
+powx074 power '0.3' '2.000000000' -> '0.09'
+powx075 power '6.0' '1' -> '6.0' -- NB zeros not stripped
+powx076 power '6.0' '2' -> '36.00' -- ..
+powx077 power '-3' '2' -> '9' -- from NetRexx book
+powx078 power '4' '3' -> '64' -- .. (sort of)
+
+powx080 power 0.1 0 -> 1
+powx081 power 0.1 1 -> 0.1
+powx082 power 0.1 2 -> 0.01
+powx083 power 0.1 3 -> 0.001
+powx084 power 0.1 4 -> 0.0001
+powx085 power 0.1 5 -> 0.00001
+powx086 power 0.1 6 -> 0.000001
+powx087 power 0.1 7 -> 1E-7
+powx088 power 0.1 8 -> 1E-8
+powx089 power 0.1 9 -> 1E-9
+
+powx090 power 101 2 -> 10201
+powx091 power 101 3 -> 1030301
+powx092 power 101 4 -> 104060401
+powx093 power 101 5 -> 1.05101005E+10 Inexact Rounded
+powx094 power 101 6 -> 1.06152015E+12 Inexact Rounded
+powx095 power 101 7 -> 1.07213535E+14 Inexact Rounded
+
+-- negative powers
+powx101 power '2' '-1' -> 0.5
+powx102 power '2' '-2' -> 0.25
+powx103 power '2' '-4' -> 0.0625
+powx104 power '2' '-8' -> 0.00390625
+powx105 power '2' '-16' -> 0.0000152587891 Inexact Rounded
+powx106 power '2' '-32' -> 2.32830644E-10 Inexact Rounded
+powx108 power '2' '-64' -> 5.42101086E-20 Inexact Rounded
+powx110 power '10' '-8' -> 1E-8
+powx111 power '10' '-7' -> 1E-7
+powx112 power '10' '-6' -> 0.000001
+powx113 power '10' '-5' -> 0.00001
+powx114 power '10' '-4' -> 0.0001
+powx115 power '10' '-3' -> 0.001
+powx116 power '10' '-2' -> 0.01
+powx117 power '10' '-1' -> 0.1
+
+powx118 power '10' '-333333333' -> 1E-333333333
+powx119 power '10' '-999999998' -> 1E-999999998
+powx120 power '10' '-999999999' -> 1E-999999999
+powx121 power '10' '-77' -> '1E-77'
+powx122 power '10' '-22' -> '1E-22'
+
+powx123 power '2' '-1' -> '0.5'
+powx124 power '2' '-2' -> '0.25'
+powx125 power '2' '-4' -> '0.0625'
+powx126 power '0' '-1' -> Infinity Division_by_zero
+powx127 power '0' '-2' -> Infinity Division_by_zero
+powx128 power -0 '-1' -> -Infinity Division_by_zero
+powx129 power -0 '-2' -> Infinity Division_by_zero
+
+-- out-of-range edge cases
+powx181 power '7' '999999998' -> 2.10892313E+845098038 Inexact Rounded
+powx182 power '7' '999999999' -> 1.47624619E+845098039 Inexact Rounded
+powx183 power '7' '1000000000' -> NaN Invalid_operation
+powx184 power '7' '1000000001' -> NaN Invalid_operation
+powx185 power '7' '10000000000' -> NaN Invalid_operation
+powx186 power '7' '-1000000001' -> NaN Invalid_operation
+powx187 power '7' '-1000000000' -> NaN Invalid_operation
+powx189 power '7' '-999999999' -> 6.77393787E-845098040 Inexact Rounded
+powx190 power '7' '-999999998' -> 4.74175651E-845098039 Inexact Rounded
+
+-- some baddies [more below]
+powx191 power '2' '2.000001' -> NaN Invalid_operation
+powx192 power '2' '2.00000000' -> 4
+powx193 power '2' '2.000000001' -> NaN Invalid_operation
+powx194 power '2' '2.0000000001' -> NaN Invalid_operation
+
+-- "0.5" tests from original Rexx diagnostics [loop unrolled]
+powx200 power 0.5 0 -> 1
+powx201 power 0.5 1 -> 0.5
+powx202 power 0.5 2 -> 0.25
+powx203 power 0.5 3 -> 0.125
+powx204 power 0.5 4 -> 0.0625
+powx205 power 0.5 5 -> 0.03125
+powx206 power 0.5 6 -> 0.015625
+powx207 power 0.5 7 -> 0.0078125
+powx208 power 0.5 8 -> 0.00390625
+powx209 power 0.5 9 -> 0.001953125
+powx210 power 0.5 10 -> 0.0009765625
+
+-- A (rare) case where the last digit is not within 0.5 ULP
+precision: 9
+powx215 power "-21971575.0E+31454441" "-7" -> "-4.04549503E-220181139" Inexact Rounded
+precision: 20
+powx216 power "-21971575.0E+31454441" "-7" -> "-4.0454950249324891788E-220181139" Inexact Rounded
+
+-- The Vienna case. Checks both setup and 1/acc working precision
+-- Modified 1998.12.14 as RHS no longer rounded before use (must fit)
+-- Modified 1990.02.04 as LHS is now rounded (instead of truncated to guard)
+-- '123456789E+10' -- lhs .. rounded to 1.23E+18
+-- '-1.23000e+2' -- rhs .. [was: -1.23455e+2, rounds to -123]
+-- Modified 2002.10.06 -- finally, no input rounding
+-- With input rounding, result would be 8.74E-2226
+precision: 3
+powx219 power '123456789E+10' '-1.23000e+2' -> '5.54E-2226' Inexact Rounded
+
+-- whole number checks
+precision: 9
+powx221 power 1 1234 -> 1
+precision: 4
+powx222 power 1 1234 -> 1
+precision: 3
+powx223 power 1 1234 -> 1
+powx224 power 1 12.34e+2 -> 1
+powx225 power 1 12.3 -> NaN Invalid_operation
+powx226 power 1 12.0 -> 1
+powx227 power 1 1.01 -> NaN Invalid_operation
+powx228 power 2 1.00 -> 2
+powx229 power 2 2.00 -> 4
+precision: 9
+powx230 power 1 1.0001 -> NaN Invalid_operation
+powx231 power 1 1.0000001 -> NaN Invalid_operation
+powx232 power 1 1.0000000001 -> NaN Invalid_operation
+powx233 power 1 1.0000000000001 -> NaN Invalid_operation
+precision: 5
+powx234 power 1 1.0001 -> NaN Invalid_operation
+powx235 power 1 1.0000001 -> NaN Invalid_operation
+powx236 power 1 1.0000000001 -> NaN Invalid_operation
+powx237 power 1 1.0000000000001 -> NaN Invalid_operation
+powx238 power 1 1.0000000000001 -> NaN Invalid_operation
+
+maxexponent: 999999999
+minexponent: -999999999
+powx239 power 1 5.67E-987654321 -> NaN Invalid_operation
+
+powx240 power 1 100000000 -> 1
+powx241 power 1 999999998 -> 1
+powx242 power 1 999999999 -> 1
+powx243 power 1 1000000000 -> NaN Invalid_operation
+powx244 power 1 9999999999 -> NaN Invalid_operation
+
+-- Checks for 'Too much precision needed'
+-- For x^12, digits+elength+1 = digits+3
+precision: 999999999
+powx249 add 1 1 -> 2 -- check basic operation at this precision
+powx250 power 2 12 -> Infinity Overflow
+precision: 999999998
+powx251 power 2 12 -> Infinity Overflow
+precision: 999999997
+powx252 power 2 12 -> Infinity Overflow
+precision: 999999996
+powx253 power 2 12 -> 4096
+precision: 999999995
+powx254 power 2 12 -> 4096
+
+-- zeros
+maxexponent: +96
+minexponent: -95
+precision: 7
+powx260 power 0E-34 3 -> 0E-101 Clamped
+powx261 power 0E-33 3 -> 0E-99
+powx262 power 0E-32 3 -> 0E-96
+powx263 power 0E-30 3 -> 0E-90
+powx264 power 0E-10 3 -> 0E-30
+powx265 power 0E-1 3 -> 0.000
+powx266 power 0E+0 3 -> 0
+powx267 power 0 3 -> 0
+powx268 power 0E+1 3 -> 0E+3
+powx269 power 0E+10 3 -> 0E+30
+powx270 power 0E+30 3 -> 0E+90
+powx271 power 0E+32 3 -> 0E+96
+powx272 power 0E+33 3 -> 0E+96 Clamped
+
+-- overflow and underflow tests
+maxexponent: 999999999
+minexponent: -999999999
+precision: 9
+powx280 power 9 999999999 -> 3.05550054E+954242508 Inexact Rounded
+powx281 power 10 999999999 -> 1.00000000E+999999999 Rounded
+powx282 power 10.0001 999999999 -> Infinity Overflow Inexact Rounded
+powx283 power 10.1 999999999 -> Infinity Overflow Inexact Rounded
+powx284 power 11 999999999 -> Infinity Overflow Inexact Rounded
+powx285 power 12 999999999 -> Infinity Overflow Inexact Rounded
+powx286 power 999 999999999 -> Infinity Overflow Inexact Rounded
+powx287 power 999999 999999999 -> Infinity Overflow Inexact Rounded
+powx288 power 999999999 999999999 -> Infinity Overflow Inexact Rounded
+powx289 power 9.9E999999999 999999999 -> Infinity Overflow Inexact Rounded
+
+powx290 power 0.5 999999999 -> 4.33559594E-301029996 Inexact Rounded
+powx291 power 0.1 999999999 -> 1E-999999999 -- unrounded
+powx292 power 0.09 999999999 -> 0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
+powx293 power 0.05 999999999 -> 0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
+powx294 power 0.01 999999999 -> 0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
+powx295 power 0.0001 999999999 -> 0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
+powx297 power 0.0000001 999999999 -> 0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
+powx298 power 0.0000000001 999999999 -> 0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
+powx299 power 1E-999999999 999999999 -> 0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
+
+powx310 power -9 999999999 -> -3.05550054E+954242508 Inexact Rounded
+powx311 power -10 999999999 -> -1.00000000E+999999999 Rounded
+powx312 power -10.0001 999999999 -> -Infinity Overflow Inexact Rounded
+powx313 power -10.1 999999999 -> -Infinity Overflow Inexact Rounded
+powx314 power -11 999999999 -> -Infinity Overflow Inexact Rounded
+powx315 power -12 999999999 -> -Infinity Overflow Inexact Rounded
+powx316 power -999 999999999 -> -Infinity Overflow Inexact Rounded
+powx317 power -999999 999999999 -> -Infinity Overflow Inexact Rounded
+powx318 power -999999999 999999999 -> -Infinity Overflow Inexact Rounded
+powx319 power -9.9E999999999 999999999 -> -Infinity Overflow Inexact Rounded
+
+powx320 power -0.5 999999999 -> -4.33559594E-301029996 Inexact Rounded
+powx321 power -0.1 999999999 -> -1E-999999999
+powx322 power -0.09 999999999 -> -0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
+powx323 power -0.05 999999999 -> -0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
+powx324 power -0.01 999999999 -> -0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
+powx325 power -0.0001 999999999 -> -0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
+powx327 power -0.0000001 999999999 -> -0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
+powx328 power -0.0000000001 999999999 -> -0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
+powx329 power -1E-999999999 999999999 -> -0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
+
+-- note no trim of next result
+powx330 power -9 999999998 -> 3.39500060E+954242507 Inexact Rounded
+powx331 power -10 999999998 -> 1.00000000E+999999998 Rounded
+powx332 power -10.0001 999999998 -> Infinity Overflow Inexact Rounded
+powx333 power -10.1 999999998 -> Infinity Overflow Inexact Rounded
+powx334 power -11 999999998 -> Infinity Overflow Inexact Rounded
+powx335 power -12 999999998 -> Infinity Overflow Inexact Rounded
+powx336 power -999 999999998 -> Infinity Overflow Inexact Rounded
+powx337 power -999999 999999998 -> Infinity Overflow Inexact Rounded
+powx338 power -999999999 999999998 -> Infinity Overflow Inexact Rounded
+powx339 power -9.9E999999999 999999998 -> Infinity Overflow Inexact Rounded
+
+powx340 power -0.5 999999998 -> 8.67119187E-301029996 Inexact Rounded
+powx341 power -0.1 999999998 -> 1E-999999998 -- NB exact unrounded
+powx342 power -0.09 999999998 -> 0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
+powx343 power -0.05 999999998 -> 0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
+powx344 power -0.01 999999998 -> 0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
+powx345 power -0.0001 999999998 -> 0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
+powx347 power -0.0000001 999999998 -> 0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
+powx348 power -0.0000000001 999999998 -> 0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
+powx349 power -1E-999999999 999999998 -> 0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
+
+-- some subnormals
+precision: 9
+-- [precision is 9, so smallest exponent is -1000000007
+powx350 power 1e-1 500000000 -> 1E-500000000
+powx351 power 1e-2 999999999 -> 0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
+powx352 power 1e-2 500000000 -> 1E-1000000000 Subnormal
+powx353 power 1e-2 500000001 -> 1E-1000000002 Subnormal
+powx354 power 1e-2 500000002 -> 1E-1000000004 Subnormal
+powx355 power 1e-2 500000003 -> 1E-1000000006 Subnormal
+powx356 power 1e-2 500000004 -> 0E-1000000007 Underflow Subnormal Inexact Rounded
+
+powx360 power 0.010001 500000000 -> 4.34941988E-999978287 Inexact Rounded
+powx361 power 0.010000001 500000000 -> 5.18469257E-999999979 Inexact Rounded
+powx362 power 0.010000001 500000001 -> 5.18469309E-999999981 Inexact Rounded
+powx363 power 0.0100000009 500000000 -> 3.49342003E-999999981 Inexact Rounded
+powx364 power 0.0100000001 500000000 -> 1.48413155E-999999998 Inexact Rounded
+powx365 power 0.01 500000000 -> 1E-1000000000 Subnormal
+powx366 power 0.0099999999 500000000 -> 6.7379E-1000000003 Underflow Subnormal Inexact Rounded
+powx367 power 0.0099999998 500000000 -> 4.54E-1000000005 Underflow Subnormal Inexact Rounded
+powx368 power 0.0099999997 500000000 -> 3E-1000000007 Underflow Subnormal Inexact Rounded
+powx369 power 0.0099999996 500000000 -> 0E-1000000007 Underflow Subnormal Inexact Rounded
+powx370 power 0.009 500000000 -> 0E-1000000007 Underflow Subnormal Inexact Rounded Clamped
+
+-- 1/subnormal -> overflow
+powx371 power 1e-1 -500000000 -> 1E+500000000
+powx372 power 1e-2 -999999999 -> Infinity Overflow Inexact Rounded
+powx373 power 1e-2 -500000000 -> Infinity Overflow Inexact Rounded
+powx374 power 1e-2 -500000001 -> Infinity Overflow Inexact Rounded
+powx375 power 1e-2 -500000002 -> Infinity Overflow Inexact Rounded
+powx376 power 1e-2 -500000003 -> Infinity Overflow Inexact Rounded
+powx377 power 1e-2 -500000004 -> Infinity Overflow Inexact Rounded
+
+powx381 power 0.010001 -500000000 -> 2.29915719E+999978286 Inexact Rounded
+powx382 power 0.010000001 -500000000 -> 1.92875467E+999999978 Inexact Rounded
+powx383 power 0.010000001 -500000001 -> 1.92875448E+999999980 Inexact Rounded
+powx384 power 0.0100000009 -500000000 -> 2.86252438E+999999980 Inexact Rounded
+powx385 power 0.0100000001 -500000000 -> 6.73794717E+999999997 Inexact Rounded
+powx386 power 0.01 -500000000 -> Infinity Overflow Inexact Rounded
+powx387 power 0.009999 -500000000 -> Infinity Overflow Inexact Rounded
+
+-- negative power giving subnormal
+powx388 power 100.000001 -500000000 -> 6.7379E-1000000003 Underflow Subnormal Inexact Rounded
+
+-- some more edge cases
+precision: 15
+maxExponent: 999
+minexponent: -999
+powx391 power 0.1 999 -> 1E-999
+powx392 power 0.099 999 -> 4.360732062E-1004 Underflow Subnormal Inexact Rounded
+powx393 power 0.098 999 -> 1.71731E-1008 Underflow Subnormal Inexact Rounded
+powx394 power 0.097 999 -> 6E-1013 Underflow Subnormal Inexact Rounded
+powx395 power 0.096 999 -> 0E-1013 Underflow Subnormal Inexact Rounded
+powx396 power 0.01 999 -> 0E-1013 Underflow Subnormal Inexact Rounded Clamped
+
+-- multiply tests are here to aid checking and test for consistent handling
+-- of underflow
+precision: 5
+maxexponent: 999
+minexponent: -999
+
+-- squares
+mulx400 multiply 1E-502 1e-502 -> 0E-1003 Subnormal Inexact Underflow Rounded
+mulx401 multiply 1E-501 1e-501 -> 1E-1002 Subnormal
+mulx402 multiply 2E-501 2e-501 -> 4E-1002 Subnormal
+mulx403 multiply 4E-501 4e-501 -> 1.6E-1001 Subnormal
+mulx404 multiply 10E-501 10e-501 -> 1.00E-1000 Subnormal
+mulx405 multiply 30E-501 30e-501 -> 9.00E-1000 Subnormal
+mulx406 multiply 40E-501 40e-501 -> 1.600E-999
+
+powx400 power 1E-502 2 -> 0E-1003 Underflow Subnormal Inexact Rounded
+powx401 power 1E-501 2 -> 1E-1002 Subnormal
+powx402 power 2E-501 2 -> 4E-1002 Subnormal
+powx403 power 4E-501 2 -> 1.6E-1001 Subnormal
+powx404 power 10E-501 2 -> 1.00E-1000 Subnormal
+powx405 power 30E-501 2 -> 9.00E-1000 Subnormal
+powx406 power 40E-501 2 -> 1.600E-999
+
+-- cubes
+mulx410 multiply 1E-670 1e-335 -> 0E-1003 Underflow Subnormal Inexact Rounded
+mulx411 multiply 1E-668 1e-334 -> 1E-1002 Subnormal
+mulx412 multiply 4E-668 2e-334 -> 8E-1002 Subnormal
+mulx413 multiply 9E-668 3e-334 -> 2.7E-1001 Subnormal
+mulx414 multiply 16E-668 4e-334 -> 6.4E-1001 Subnormal
+mulx415 multiply 25E-668 5e-334 -> 1.25E-1000 Subnormal
+mulx416 multiply 10E-668 100e-334 -> 1.000E-999
+
+powx410 power 1E-335 3 -> 0E-1003 Underflow Subnormal Inexact Rounded
+powx411 power 1E-334 3 -> 1E-1002 Subnormal
+powx412 power 2E-334 3 -> 8E-1002 Subnormal
+powx413 power 3E-334 3 -> 2.7E-1001 Subnormal
+powx414 power 4E-334 3 -> 6.4E-1001 Subnormal
+powx415 power 5E-334 3 -> 1.25E-1000 Subnormal
+powx416 power 10E-334 3 -> 1.000E-999
+
+-- negative powers, testing subnormals
+precision: 5
+maxExponent: 999
+minexponent: -999
+powx421 power 2.5E-501 -2 -> Infinity Overflow Inexact Rounded
+powx422 power 2.5E-500 -2 -> 1.6E+999
+
+powx423 power 2.5E+499 -2 -> 1.6E-999
+powx424 power 2.5E+500 -2 -> 1.6E-1001 Subnormal
+powx425 power 2.5E+501 -2 -> 2E-1003 Underflow Subnormal Inexact Rounded
+powx426 power 2.5E+502 -2 -> 0E-1003 Underflow Subnormal Inexact Rounded
+
+powx427 power 0.25E+499 -2 -> 1.6E-997
+powx428 power 0.25E+500 -2 -> 1.6E-999
+powx429 power 0.25E+501 -2 -> 1.6E-1001 Subnormal
+powx430 power 0.25E+502 -2 -> 2E-1003 Underflow Subnormal Inexact Rounded
+powx431 power 0.25E+503 -2 -> 0E-1003 Underflow Subnormal Inexact Rounded
+
+powx432 power 0.04E+499 -2 -> 6.25E-996
+powx433 power 0.04E+500 -2 -> 6.25E-998
+powx434 power 0.04E+501 -2 -> 6.25E-1000 Subnormal
+powx435 power 0.04E+502 -2 -> 6.3E-1002 Underflow Subnormal Inexact Rounded
+powx436 power 0.04E+503 -2 -> 1E-1003 Underflow Subnormal Inexact Rounded
+powx437 power 0.04E+504 -2 -> 0E-1003 Underflow Subnormal Inexact Rounded
+
+powx441 power 0.04E+334 -3 -> 1.5625E-998
+powx442 power 0.04E+335 -3 -> 1.56E-1001 Underflow Subnormal Inexact Rounded
+powx443 power 0.04E+336 -3 -> 0E-1003 Underflow Subnormal Inexact Rounded
+powx444 power 0.25E+333 -3 -> 6.4E-998
+powx445 power 0.25E+334 -3 -> 6.4E-1001 Subnormal
+powx446 power 0.25E+335 -3 -> 1E-1003 Underflow Subnormal Inexact Rounded
+powx447 power 0.25E+336 -3 -> 0E-1003 Underflow Subnormal Inexact Rounded Clamped
+-- check sign for cubes and a few squares
+powx448 power -0.04E+334 -3 -> -1.5625E-998
+powx449 power -0.04E+335 -3 -> -1.56E-1001 Underflow Subnormal Inexact Rounded
+powx450 power -0.04E+336 -3 -> -0E-1003 Underflow Subnormal Inexact Rounded
+powx451 power -0.25E+333 -3 -> -6.4E-998
+powx452 power -0.25E+334 -3 -> -6.4E-1001 Subnormal
+powx453 power -0.25E+335 -3 -> -1E-1003 Underflow Subnormal Inexact Rounded
+powx454 power -0.25E+336 -3 -> -0E-1003 Underflow Subnormal Inexact Rounded Clamped
+powx455 power -0.04E+499 -2 -> 6.25E-996
+powx456 power -0.04E+500 -2 -> 6.25E-998
+powx457 power -0.04E+501 -2 -> 6.25E-1000 Subnormal
+powx458 power -0.04E+502 -2 -> 6.3E-1002 Underflow Subnormal Inexact Rounded
+
+-- test -0s
+precision: 9
+powx560 power 0 0 -> NaN Invalid_operation
+powx561 power 0 -0 -> NaN Invalid_operation
+powx562 power -0 0 -> NaN Invalid_operation
+powx563 power -0 -0 -> NaN Invalid_operation
+powx564 power 1 0 -> 1
+powx565 power 1 -0 -> 1
+powx566 power -1 0 -> 1
+powx567 power -1 -0 -> 1
+powx568 power 0 1 -> 0
+powx569 power 0 -1 -> Infinity Division_by_zero
+powx570 power -0 1 -> -0
+powx571 power -0 -1 -> -Infinity Division_by_zero
+powx572 power 0 2 -> 0
+powx573 power 0 -2 -> Infinity Division_by_zero
+powx574 power -0 2 -> 0
+powx575 power -0 -2 -> Infinity Division_by_zero
+powx576 power 0 3 -> 0
+powx577 power 0 -3 -> Infinity Division_by_zero
+powx578 power -0 3 -> -0
+powx579 power -0 -3 -> -Infinity Division_by_zero
+
+-- Specials
+powx580 power Inf -Inf -> NaN Invalid_operation
+powx581 power Inf -1000 -> 0
+powx582 power Inf -1 -> 0
+powx583 power Inf -0 -> 1
+powx584 power Inf 0 -> 1
+powx585 power Inf 1 -> Infinity
+powx586 power Inf 1000 -> Infinity
+powx587 power Inf Inf -> NaN Invalid_operation
+powx588 power -1000 Inf -> NaN Invalid_operation
+powx589 power -Inf Inf -> NaN Invalid_operation
+powx590 power -1 Inf -> NaN Invalid_operation
+powx591 power -0 Inf -> NaN Invalid_operation
+powx592 power 0 Inf -> NaN Invalid_operation
+powx593 power 1 Inf -> NaN Invalid_operation
+powx594 power 1000 Inf -> NaN Invalid_operation
+powx595 power Inf Inf -> NaN Invalid_operation
+
+powx600 power -Inf -Inf -> NaN Invalid_operation
+powx601 power -Inf -1000 -> 0
+powx602 power -Inf -1 -> -0
+powx603 power -Inf -0 -> 1
+powx604 power -Inf 0 -> 1
+powx605 power -Inf 1 -> -Infinity
+powx606 power -Inf 1000 -> Infinity
+powx607 power -Inf Inf -> NaN Invalid_operation
+powx608 power -1000 Inf -> NaN Invalid_operation
+powx609 power -Inf -Inf -> NaN Invalid_operation
+powx610 power -1 -Inf -> NaN Invalid_operation
+powx611 power -0 -Inf -> NaN Invalid_operation
+powx612 power 0 -Inf -> NaN Invalid_operation
+powx613 power 1 -Inf -> NaN Invalid_operation
+powx614 power 1000 -Inf -> NaN Invalid_operation
+powx615 power Inf -Inf -> NaN Invalid_operation
+
+powx621 power NaN -Inf -> NaN Invalid_operation
+powx622 power NaN -1000 -> NaN
+powx623 power NaN -1 -> NaN
+powx624 power NaN -0 -> NaN
+powx625 power NaN 0 -> NaN
+powx626 power NaN 1 -> NaN
+powx627 power NaN 1000 -> NaN
+powx628 power NaN Inf -> NaN Invalid_operation
+powx629 power NaN NaN -> NaN
+powx630 power -Inf NaN -> NaN
+powx631 power -1000 NaN -> NaN
+powx632 power -1 NaN -> NaN
+powx633 power -0 NaN -> NaN
+powx634 power 0 NaN -> NaN
+powx635 power 1 NaN -> NaN
+powx636 power 1000 NaN -> NaN
+powx637 power Inf NaN -> NaN
+
+powx641 power sNaN -Inf -> NaN Invalid_operation
+powx642 power sNaN -1000 -> NaN Invalid_operation
+powx643 power sNaN -1 -> NaN Invalid_operation
+powx644 power sNaN -0 -> NaN Invalid_operation
+powx645 power sNaN 0 -> NaN Invalid_operation
+powx646 power sNaN 1 -> NaN Invalid_operation
+powx647 power sNaN 1000 -> NaN Invalid_operation
+powx648 power sNaN NaN -> NaN Invalid_operation
+powx649 power sNaN sNaN -> NaN Invalid_operation
+powx650 power NaN sNaN -> NaN Invalid_operation
+powx651 power -Inf sNaN -> NaN Invalid_operation
+powx652 power -1000 sNaN -> NaN Invalid_operation
+powx653 power -1 sNaN -> NaN Invalid_operation
+powx654 power -0 sNaN -> NaN Invalid_operation
+powx655 power 0 sNaN -> NaN Invalid_operation
+powx656 power 1 sNaN -> NaN Invalid_operation
+powx657 power 1000 sNaN -> NaN Invalid_operation
+powx658 power Inf sNaN -> NaN Invalid_operation
+powx659 power NaN sNaN -> NaN Invalid_operation
+
+-- NaN propagation
+powx660 power NaN3 sNaN7 -> NaN7 Invalid_operation
+powx661 power sNaN8 NaN6 -> NaN8 Invalid_operation
+powx662 power 1 sNaN7 -> NaN7 Invalid_operation
+powx663 power sNaN8 1 -> NaN8 Invalid_operation
+powx664 power Inf sNaN7 -> NaN7 Invalid_operation
+powx665 power sNaN8 Inf -> NaN Invalid_operation
+powx666 power Inf NaN9 -> NaN9
+powx667 power NaN6 Inf -> NaN Invalid_operation
+powx668 power 1 NaN5 -> NaN5
+powx669 power NaN2 1 -> NaN2
+powx670 power NaN2 Nan4 -> NaN2
+powx671 power NaN Nan4 -> NaN
+powx672 power NaN345 Nan -> NaN345
+powx673 power Inf -sNaN7 -> -NaN7 Invalid_operation
+powx674 power -sNaN8 Inf -> NaN Invalid_operation
+powx675 power Inf -NaN9 -> -NaN9
+powx676 power -NaN6 Inf -> NaN Invalid_operation
+powx677 power -NaN2 -Nan4 -> -NaN2
+
+-- Examples from extended specification
+powx690 power Inf -2 -> 0
+powx691 power Inf -1 -> 0
+powx692 power Inf 0 -> 1
+powx693 power Inf 1 -> Infinity
+powx694 power Inf 2 -> Infinity
+powx695 power -Inf -2 -> 0
+powx696 power -Inf -1 -> -0
+powx697 power -Inf 0 -> 1
+powx698 power -Inf 1 -> -Infinity
+powx699 power -Inf 2 -> Infinity
+powx700 power 0 0 -> NaN Invalid_operation
+
+-- long operand and RHS range checks
+maxexponent: 999
+minexponent: -999
+precision: 9
+powx701 power 12345678000 1 -> 1.23456780E+10 Rounded
+powx702 power 1234567800 1 -> 1.23456780E+9 Rounded
+powx703 power 1234567890 1 -> 1.23456789E+9 Rounded
+powx704 power 1234567891 1 -> 1.23456789E+9 Inexact Rounded
+powx705 power 12345678901 1 -> 1.23456789E+10 Inexact Rounded
+powx706 power 1234567896 1 -> 1.23456790E+9 Inexact Rounded
+powx707 power 1 12345678000 -> NaN Invalid_operation
+powx708 power 1 1234567800 -> NaN Invalid_operation
+powx709 power 1 1234567890 -> NaN Invalid_operation
+powx710 power 1 11234567891 -> NaN Invalid_operation
+powx711 power 1 12345678901 -> NaN Invalid_operation
+powx712 power 1 1234567896 -> NaN Invalid_operation
+powx713 power 1 -1234567896 -> NaN Invalid_operation
+powx714 power 1 1000000000 -> NaN Invalid_operation
+powx715 power 1 -1000000000 -> NaN Invalid_operation
+
+precision: 15
+-- still checking
+powx741 power 12345678000 1 -> 12345678000
+powx742 power 1234567800 1 -> 1234567800
+powx743 power 1234567890 1 -> 1234567890
+powx744 power 1234567891 1 -> 1234567891
+powx745 power 12345678901 1 -> 12345678901
+powx746 power 1234567896 1 -> 1234567896
+powx747 power 1 12345678000 -> NaN Invalid_operation
+powx748 power 1 -1234567896 -> NaN Invalid_operation
+powx749 power 1 1000000000 -> NaN Invalid_operation
+powx740 power 1 -1000000000 -> NaN Invalid_operation
+
+-- check for double-rounded subnormals
+precision: 5
+maxexponent: 79
+minexponent: -79
+powx750 power 1.2347E-40 2 -> 1.524E-80 Inexact Rounded Subnormal Underflow
+
+-- Null tests
+powx900 power 1 # -> NaN Invalid_operation
+powx901 power # 1 -> NaN Invalid_operation
+