RIFF¤ WEBPVP8 ˜ ðÑ *ôô>‘HŸK¥¤"§£±¨àð .......................................===Shadow-Here===........................................ > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < > < ------------------------------------------------------------------------------------------------ //////////////////////////////////////////////////////////////////////////////////////////////// GIF89a=( õ' 7IAXKgNgYvYx\%wh…hŽth%ˆs%—x¨}9®Œ©€&©‰%¶†(¹–.¹5·œD¹&Çš)ÇŸ5ǘ;Í£*È¡&Õ²)ׯ7×µ<Ñ»4ï°3ø‘HÖ§KͯT÷¨Yÿšqÿ»qÿÔFØ !ù ' !ÿ NETSCAPE2.0 , =( þÀ“pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§gª«ªE¯°¨¬ª±²Œ¹º¹E¾­”´ÂB¶¯ §Åȸ»ÑD¾¿Á•ÄÅ®° ÝH¾ÒLÀÆDÙ«D¶BÝïðÀ¾DÑÑÔTÌÍíH òGö¨A RÎڐ |¥ ٭&ºìE8œ¹kGÔAÞpx­a¶­ã R2XB®åE8I€Õ6Xî:vT)äžþÀq¦è³¥ì仕F~%xñ  4#ZÔ‰O|-4Bs‘X:= QÉ œš lºÒyXJŠGȦ|s hÏíK–3l7·B|¥$'7Jީܪ‰‡àá”Dæn=Pƒ ¤Òëí‰`䌨ljóá¯Éüv>á–Á¼5 ½.69ûϸd«­ºÀûnlv©‹ªîf{¬ÜãPbŸ  l5‘Ž¯pß ´ ˜3aÅùäI«O’ý·‘áÞ‡˜¾Æ‚ÙÏiÇÿ‹Àƒ #öó)pâš Þ½ ‘Ý{ó)vmÞü%D~ 6f s}ŃƒDØW Eþ`‡þ À…L8xá†ç˜{)x`X/> Ì}mø‚–RØ‘*|`D=‚Ø_ ^ð5 !_…'aä“OÚ—7âcð`D”Cx`ÝÂ¥ä‹éY¹—F¼¤¥Š?¡Õ™ n@`} lď’ÄÉ@4>ñd œ à‘vÒxNÃ×™@žd=ˆgsžG±æ ´²æud &p8Qñ)ˆ«lXD©øÜéAžHìySun jª×k*D¤LH] †¦§C™Jä–´Xb~ʪwStŽ6K,°£qÁœ:9ت:¨þªl¨@¡`‚ûÚ ».Û¬¯t‹ÆSÉ[:°=Š‹„‘Nåû”Ìî{¿ÂA ‡Rà›ÀÙ6úë°Ÿð0Ä_ ½;ÃϱîÉì^ÇÛÇ#Ëë¼ôº!±Ä˜íUîÅÇ;0L1óÁµö«p% AÀºU̬ݵ¼á%霼€‡¯Á~`ÏG¯»À× ­²± =4ªnpð3¾¤³¯­ü¾¦îuÙuµÙ®|%2ÊIÿür¦#0·ÔJ``8È@S@5ê¢ ö×Þ^`8EÜ]ý.뜃Âç 7 ú ȉÞj œ½Dç zý¸iþœÑÙûÄë!ˆÞÀl§Ïw‹*DçI€nEX¯¬¼ &A¬Go¼QföõFç°¯;é¦÷îŽêJ°îúôF5¡ÌQ|îúöXªæ»TÁÏyñêï]ê² o óÎC=öõ›ÒÓPB@ D×½œä(>èCÂxŽ`±«Ÿ–JЀ»Û á¤±p+eE0`ëŽ`A Ú/NE€Ø†À9‚@¤à H½7”à‡%B‰`Àl*ƒó‘–‡8 2ñ%¸ —€:Ù1Á‰E¸àux%nP1ð!‘ðC)¾P81lÑɸF#ˆ€{´âé°ÈB„0>±û °b¡Š´±O‚3È–Ù()yRpbµ¨E.Z‘D8ÊH@% òŒx+%Ù˜Æcü »¸˜fõ¬b·d`Fê™8èXH"ÉÈ-±|1Ô6iI, 2““¬$+](A*jÐ QTÂo‰.ÛU슬Œã„Ž`¯SN¡–¶Äåyše¯ª’­¬‚´b¦Éož œ)åyâ@Ì®3 ÎtT̉°&Ø+žLÀf"Ø-|žçÔ>‡Ðv¦Ðžì\‚ Q1)Ž@Žh#aP72”ˆ™¨$‚ !ù " , =( …7IAXG]KgNgYvYxR"k\%w]'}hŽth%ˆg+ˆs%—r.—m3šx3˜x¨}9®€&©€+¨‡7§‰%¶†(¹–.¹œD¹&ǘ;Í•&ײ)×»4ïÌ6ò§KÍ þ@‘pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§g «¬ E ±± ¨­¶°ººE Á´”·®C¬²§Ç¶Œ»ÓDÃÕƷ¯Ê±H½ºM×ÁGÚ¬D¶BËÁ½î½DÓôTÏÛßîG»ôõC×CÌ l&âž:'òtU³6ɹ#·Ø)€'Ü.6±&ëÍÈ» K(8p0N?!æ2"ÛˆNIJX>R¼ÐO‚M '¡¨2¸*Ÿþ>#n↠å@‚<[:¡Iïf’ ¤TÚ˘CdbÜÙ“[«ŽEú5MBo¤×@€`@„€Êt W-3 ¶Ÿ¡BíêäjIÝ…Eò9[T…$íêﯧ„…•s»Óȳ¹€ÅÚdc®UUρ#±Ùïldj?´í¼²`\ŽÁðÞu|3'ÖŒ]ë6 ¶S#²‡˜FKLÈ *N E´‘áäŠ$˜›eÄYD„ºq«.è촁ƒs \-ÔjA 9²õ÷å- üúM[Âx(ís÷ì®x€|í¡Ù’p¦‚ ŽkÛTÇDpE@WÜ ²Ç]kŠ1¨ þ€·Yb ÓÁ‰l°*n0 ç™—žzBdОu¾7ĉBl€â‰-ºx~|UåU‰  h*Hœ|e"#"?vpÄiŠe6^ˆ„+qâŠm8 #VÇá ‘å–ÄV„œ|Šè•m"сœn|@›U¶ÆΞ—Špb¥G¨ED”€±Úê2FÌIç? >Éxå Œ± ¡¤„%‘žjŸ‘ꄯ<Ìaà9ijÐ2˜D¦È&›†Z`‚å]wþ¼Â:ç6àB¤7eFJ|õÒ§Õ,¨äàFÇ®cS·Ê¶+B°,‘Þ˜ºNûãØ>PADÌHD¹æž«ÄÀnÌ¥}­#Ë’ë QÀÉSÌÂÇ2ÌXÀ{æk²lQÁ2«ÊðÀ¯w|2Í h‹ÄÂG€,m¾¶ë3ÐÙ6-´ÅE¬L°ÆIij*K½ÀÇqï`DwVÍQXœÚÔpeœ±¬Ñ q˜§Tœ½µƒ°Œìu Â<¶aØ*At¯lmEØ ü ôÛN[P1ÔÛ¦­±$ÜÆ@`ùåDpy¶yXvCAyåB`ŽD¶ 0QwG#¯ æš[^Äþ $ÀÓÝǦ{„L™[±úKÄgÌ;ï£S~¹ìGX.ôgoT.»åˆ°ùŸûù¡?1zö¦Ÿž:ÅgÁ|ìL¹ „®£œŠ‚à0œ]PÁ^p F<"•ç?!,ñ‡N4—…PÄ Á„ö¨Û:Tè@hÀ‹%táÿ:ø-žI<`þ‹p I….)^ 40D#p@ƒj4–؀:²‰1Øâr˜¼F2oW¼#Z†;$Q q” ‘ ÂK¦ñNl#29 !’F@¥Bh·ᏀL!—XFóLH‘Kh¤.«hE&JòG¨¥<™WN!€ÑÙÚˆY„@†>Œž19J" 2,/ &.GXB%ÌRÈ9B6¹W]’î×ÔW¥’IÎ$ ñ‹ÓŒE8YÆ ¼³™ñA5“à®Q.aŸB€&Ø©³ JÁ—! ¦t)K%tœ-¦JF bòNMxLôþ)ÐR¸Ð™‘ èÝ6‘O!THÌ„HÛ ‰ !ù ) , =( …AXKgNgYvYxR"k\%wh…hŽh%ˆg+ˆs%—r.—x3˜x¨}9®€&©€+¨Œ,©‡7§‰%¶†(¹–.¹5·&Çš)ǘ;Í•&×£*Ȳ)ׯ7×»4ï°3øÌ6ò‘HÖ§KÍ»Hó¯T÷¨Yÿ»qÿÇhÿ þÀ”pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§g ª« E$±²¨ª­ · °²½$E$ÂÕ««D· Í ¿¦Ç¶¸ÌŒ¾³CÃÅÆ E ééH½MÛÂGâªD­ çBêêϾD²ÒaÀà€Š1r­ðÓ¤ ÔožzU!L˜C'¾yW½UGtäÇïÙllê0×àÂuGþ)AÀs[þ·xì ÁxO%ƒûX2ó—  P£n›R/¡ÑšHše+êDm?# —‘Ç£6¡8íJ¡ŸâDiäªM¥Ö„ôj“¬¹£5oQ7°- <‡ *´lãÓŒ2r/a!l)dÈ A™ÈE¢ôÔ͆…ð ;Ö˜c ¡%ß‚’Ùˆâ¸b½—pe~C"BíëÚHïeF2§æŠ8qb t_`urŠeü wÅu3êæPv§h•"ß`íÍxçLĹÜÖ3á  ~Öº“®›¸ÏMDfJÙ °„ÛµáWõ%§œ‚à©–‚X Ó؁)@®Ñ›Eþ´wëuÅSxb8y\mÖzœ¥§ZbºE—ÂLªÌw!y(>¡™wú=Ç|ÅÝs¢d €CÁW)HÜcC$€L Ä7„r.á\{)@ð` @ äXÈ$PD” `šaG:§æˆOˆ72EÐamn]ù"ŒcÊxÑŒ° &dR8`g«iÙŸLR!¦P …d’ä¡“¦ðÎTƒ¦ià|À _ ¥ Qi#¦Šg›Æ ›noMµ ›V ã£)p ç£ÎW…š=Âeªk§†j„ ´®1ß²sÉxéW«jšl|0¯B0Û, \jÛ´›6±¬¶C ÛíWþï|ëÙ‹¸ñzĸV {ì;Ýñn¼òVˆm³I¼³.Ðã¤PN¥ ²µ¼„µCã+¹ÍByî£Ñ¾HŸ›ëê 7ìYÆFTk¨SaoaY$Dµœìï¿Ã29RÈkt Çïfñ ÇÒ:ÀÐSp¹3ÇI¨â¥DZÄ ü9Ïýögñ½­uÔ*3)O‘˜Ö[_hv ,àî×Et Ÿé¶BH€ Õ[ü±64M@ÔSÌM7dÐl5-ÄÙU܍´©zߌ3Ô€3ž„ „ ¶ÛPô½5×g› êÚ˜kN„Ý…0Îj4€Ìë°“#{þÕ3S2çKÜ'ợlø¼Ú2K{° {Û¶?žm𸧠ËI¼nEò='êüóºè^üæÃ_Û=°óž‚ì#Oý¿Í'¡½áo..ÏYìnüñCœO±Áa¿¢Kô½o,üÄËbö²çºíï{ËC Ú— "”Ï{ËK ÍÒw„õ±Oz dÕ¨à:$ ƒô—«v»] A#ð «€¿šéz)Rx׿ˆ¥‚d``èw-îyÏf×K!ð€þ­Ð|ìPľ„=Ì`ý(f” 'Pa ¥ÐBJa%Ðâf§„%Š¡}FàáÝ×6>ÉäŠG"éŽè=ø!oŠ°^FP¼Ø©Q„ÀCÙÁ`(Ž\ÄÝ® ©Â$<n@dÄ E#ììUÒI! ‚#lù‹`k¦ÐÇ'Rró’ZýNBÈMF Í[¤+‹ðɈ-áwj¨¥þ8¾rá ,VÂh„"|½œ=×G_¦Ñ™EØ 0i*%̲˜Æda0mV‚k¾)›;„&6 p>ÓjK “¦Ç# âDÂ:ûc?:R Ó¬fÞéI-Ì“•Ã<ä=™Ï7˜3œ¨˜c2ŒW ,ˆ”8(T™P‰F¡Jhç"‚ ; 403WebShell
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Current File : /opt/golang/1.19.4/src/strconv/ftoa_test.go
// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package strconv_test

import (
	"math"
	"math/rand"
	. "strconv"
	"testing"
)

type ftoaTest struct {
	f    float64
	fmt  byte
	prec int
	s    string
}

func fdiv(a, b float64) float64 { return a / b }

const (
	below1e23 = 99999999999999974834176
	above1e23 = 100000000000000008388608
)

var ftoatests = []ftoaTest{
	{1, 'e', 5, "1.00000e+00"},
	{1, 'f', 5, "1.00000"},
	{1, 'g', 5, "1"},
	{1, 'g', -1, "1"},
	{1, 'x', -1, "0x1p+00"},
	{1, 'x', 5, "0x1.00000p+00"},
	{20, 'g', -1, "20"},
	{20, 'x', -1, "0x1.4p+04"},
	{1234567.8, 'g', -1, "1.2345678e+06"},
	{1234567.8, 'x', -1, "0x1.2d687cccccccdp+20"},
	{200000, 'g', -1, "200000"},
	{200000, 'x', -1, "0x1.86ap+17"},
	{200000, 'X', -1, "0X1.86AP+17"},
	{2000000, 'g', -1, "2e+06"},
	{1e10, 'g', -1, "1e+10"},

	// g conversion and zero suppression
	{400, 'g', 2, "4e+02"},
	{40, 'g', 2, "40"},
	{4, 'g', 2, "4"},
	{.4, 'g', 2, "0.4"},
	{.04, 'g', 2, "0.04"},
	{.004, 'g', 2, "0.004"},
	{.0004, 'g', 2, "0.0004"},
	{.00004, 'g', 2, "4e-05"},
	{.000004, 'g', 2, "4e-06"},

	{0, 'e', 5, "0.00000e+00"},
	{0, 'f', 5, "0.00000"},
	{0, 'g', 5, "0"},
	{0, 'g', -1, "0"},
	{0, 'x', 5, "0x0.00000p+00"},

	{-1, 'e', 5, "-1.00000e+00"},
	{-1, 'f', 5, "-1.00000"},
	{-1, 'g', 5, "-1"},
	{-1, 'g', -1, "-1"},

	{12, 'e', 5, "1.20000e+01"},
	{12, 'f', 5, "12.00000"},
	{12, 'g', 5, "12"},
	{12, 'g', -1, "12"},

	{123456700, 'e', 5, "1.23457e+08"},
	{123456700, 'f', 5, "123456700.00000"},
	{123456700, 'g', 5, "1.2346e+08"},
	{123456700, 'g', -1, "1.234567e+08"},

	{1.2345e6, 'e', 5, "1.23450e+06"},
	{1.2345e6, 'f', 5, "1234500.00000"},
	{1.2345e6, 'g', 5, "1.2345e+06"},

	// Round to even
	{1.2345e6, 'e', 3, "1.234e+06"},
	{1.2355e6, 'e', 3, "1.236e+06"},
	{1.2345, 'f', 3, "1.234"},
	{1.2355, 'f', 3, "1.236"},
	{1234567890123456.5, 'e', 15, "1.234567890123456e+15"},
	{1234567890123457.5, 'e', 15, "1.234567890123458e+15"},
	{108678236358137.625, 'g', -1, "1.0867823635813762e+14"},

	{1e23, 'e', 17, "9.99999999999999916e+22"},
	{1e23, 'f', 17, "99999999999999991611392.00000000000000000"},
	{1e23, 'g', 17, "9.9999999999999992e+22"},

	{1e23, 'e', -1, "1e+23"},
	{1e23, 'f', -1, "100000000000000000000000"},
	{1e23, 'g', -1, "1e+23"},

	{below1e23, 'e', 17, "9.99999999999999748e+22"},
	{below1e23, 'f', 17, "99999999999999974834176.00000000000000000"},
	{below1e23, 'g', 17, "9.9999999999999975e+22"},

	{below1e23, 'e', -1, "9.999999999999997e+22"},
	{below1e23, 'f', -1, "99999999999999970000000"},
	{below1e23, 'g', -1, "9.999999999999997e+22"},

	{above1e23, 'e', 17, "1.00000000000000008e+23"},
	{above1e23, 'f', 17, "100000000000000008388608.00000000000000000"},
	{above1e23, 'g', 17, "1.0000000000000001e+23"},

	{above1e23, 'e', -1, "1.0000000000000001e+23"},
	{above1e23, 'f', -1, "100000000000000010000000"},
	{above1e23, 'g', -1, "1.0000000000000001e+23"},

	{fdiv(5e-304, 1e20), 'g', -1, "5e-324"},   // avoid constant arithmetic
	{fdiv(-5e-304, 1e20), 'g', -1, "-5e-324"}, // avoid constant arithmetic

	{32, 'g', -1, "32"},
	{32, 'g', 0, "3e+01"},

	{100, 'x', -1, "0x1.9p+06"},
	{100, 'y', -1, "%y"},

	{math.NaN(), 'g', -1, "NaN"},
	{-math.NaN(), 'g', -1, "NaN"},
	{math.Inf(0), 'g', -1, "+Inf"},
	{math.Inf(-1), 'g', -1, "-Inf"},
	{-math.Inf(0), 'g', -1, "-Inf"},

	{-1, 'b', -1, "-4503599627370496p-52"},

	// fixed bugs
	{0.9, 'f', 1, "0.9"},
	{0.09, 'f', 1, "0.1"},
	{0.0999, 'f', 1, "0.1"},
	{0.05, 'f', 1, "0.1"},
	{0.05, 'f', 0, "0"},
	{0.5, 'f', 1, "0.5"},
	{0.5, 'f', 0, "0"},
	{1.5, 'f', 0, "2"},

	// https://www.exploringbinary.com/java-hangs-when-converting-2-2250738585072012e-308/
	{2.2250738585072012e-308, 'g', -1, "2.2250738585072014e-308"},
	// https://www.exploringbinary.com/php-hangs-on-numeric-value-2-2250738585072011e-308/
	{2.2250738585072011e-308, 'g', -1, "2.225073858507201e-308"},

	// Issue 2625.
	{383260575764816448, 'f', 0, "383260575764816448"},
	{383260575764816448, 'g', -1, "3.8326057576481645e+17"},

	// Issue 29491.
	{498484681984085570, 'f', -1, "498484681984085570"},
	{-5.8339553793802237e+23, 'g', -1, "-5.8339553793802237e+23"},

	// Issue 52187
	{123.45, '?', 0, "%?"},
	{123.45, '?', 1, "%?"},
	{123.45, '?', -1, "%?"},

	// rounding
	{2.275555555555555, 'x', -1, "0x1.23456789abcdep+01"},
	{2.275555555555555, 'x', 0, "0x1p+01"},
	{2.275555555555555, 'x', 2, "0x1.23p+01"},
	{2.275555555555555, 'x', 16, "0x1.23456789abcde000p+01"},
	{2.275555555555555, 'x', 21, "0x1.23456789abcde00000000p+01"},
	{2.2755555510520935, 'x', -1, "0x1.2345678p+01"},
	{2.2755555510520935, 'x', 6, "0x1.234568p+01"},
	{2.275555431842804, 'x', -1, "0x1.2345668p+01"},
	{2.275555431842804, 'x', 6, "0x1.234566p+01"},
	{3.999969482421875, 'x', -1, "0x1.ffffp+01"},
	{3.999969482421875, 'x', 4, "0x1.ffffp+01"},
	{3.999969482421875, 'x', 3, "0x1.000p+02"},
	{3.999969482421875, 'x', 2, "0x1.00p+02"},
	{3.999969482421875, 'x', 1, "0x1.0p+02"},
	{3.999969482421875, 'x', 0, "0x1p+02"},
}

func TestFtoa(t *testing.T) {
	for i := 0; i < len(ftoatests); i++ {
		test := &ftoatests[i]
		s := FormatFloat(test.f, test.fmt, test.prec, 64)
		if s != test.s {
			t.Error("testN=64", test.f, string(test.fmt), test.prec, "want", test.s, "got", s)
		}
		x := AppendFloat([]byte("abc"), test.f, test.fmt, test.prec, 64)
		if string(x) != "abc"+test.s {
			t.Error("AppendFloat testN=64", test.f, string(test.fmt), test.prec, "want", "abc"+test.s, "got", string(x))
		}
		if float64(float32(test.f)) == test.f && test.fmt != 'b' {
			s := FormatFloat(test.f, test.fmt, test.prec, 32)
			if s != test.s {
				t.Error("testN=32", test.f, string(test.fmt), test.prec, "want", test.s, "got", s)
			}
			x := AppendFloat([]byte("abc"), test.f, test.fmt, test.prec, 32)
			if string(x) != "abc"+test.s {
				t.Error("AppendFloat testN=32", test.f, string(test.fmt), test.prec, "want", "abc"+test.s, "got", string(x))
			}
		}
	}
}

func TestFtoaPowersOfTwo(t *testing.T) {
	for exp := -2048; exp <= 2048; exp++ {
		f := math.Ldexp(1, exp)
		if !math.IsInf(f, 0) {
			s := FormatFloat(f, 'e', -1, 64)
			if x, _ := ParseFloat(s, 64); x != f {
				t.Errorf("failed roundtrip %v => %s => %v", f, s, x)
			}
		}
		f32 := float32(f)
		if !math.IsInf(float64(f32), 0) {
			s := FormatFloat(float64(f32), 'e', -1, 32)
			if x, _ := ParseFloat(s, 32); float32(x) != f32 {
				t.Errorf("failed roundtrip %v => %s => %v", f32, s, float32(x))
			}
		}
	}
}

func TestFtoaRandom(t *testing.T) {
	N := int(1e4)
	if testing.Short() {
		N = 100
	}
	t.Logf("testing %d random numbers with fast and slow FormatFloat", N)
	for i := 0; i < N; i++ {
		bits := uint64(rand.Uint32())<<32 | uint64(rand.Uint32())
		x := math.Float64frombits(bits)

		shortFast := FormatFloat(x, 'g', -1, 64)
		SetOptimize(false)
		shortSlow := FormatFloat(x, 'g', -1, 64)
		SetOptimize(true)
		if shortSlow != shortFast {
			t.Errorf("%b printed as %s, want %s", x, shortFast, shortSlow)
		}

		prec := rand.Intn(12) + 5
		shortFast = FormatFloat(x, 'e', prec, 64)
		SetOptimize(false)
		shortSlow = FormatFloat(x, 'e', prec, 64)
		SetOptimize(true)
		if shortSlow != shortFast {
			t.Errorf("%b printed as %s, want %s", x, shortFast, shortSlow)
		}
	}
}

func TestFormatFloatInvalidBitSize(t *testing.T) {
	defer func() {
		if r := recover(); r == nil {
			t.Fatalf("expected panic due to invalid bitSize")
		}
	}()
	_ = FormatFloat(3.14, 'g', -1, 100)
}

var ftoaBenches = []struct {
	name    string
	float   float64
	fmt     byte
	prec    int
	bitSize int
}{
	{"Decimal", 33909, 'g', -1, 64},
	{"Float", 339.7784, 'g', -1, 64},
	{"Exp", -5.09e75, 'g', -1, 64},
	{"NegExp", -5.11e-95, 'g', -1, 64},
	{"LongExp", 1.234567890123456e-78, 'g', -1, 64},

	{"Big", 123456789123456789123456789, 'g', -1, 64},
	{"BinaryExp", -1, 'b', -1, 64},

	{"32Integer", 33909, 'g', -1, 32},
	{"32ExactFraction", 3.375, 'g', -1, 32},
	{"32Point", 339.7784, 'g', -1, 32},
	{"32Exp", -5.09e25, 'g', -1, 32},
	{"32NegExp", -5.11e-25, 'g', -1, 32},
	{"32Shortest", 1.234567e-8, 'g', -1, 32},
	{"32Fixed8Hard", math.Ldexp(15961084, -125), 'e', 8, 32},
	{"32Fixed9Hard", math.Ldexp(14855922, -83), 'e', 9, 32},

	{"64Fixed1", 123456, 'e', 3, 64},
	{"64Fixed2", 123.456, 'e', 3, 64},
	{"64Fixed3", 1.23456e+78, 'e', 3, 64},
	{"64Fixed4", 1.23456e-78, 'e', 3, 64},
	{"64Fixed12", 1.23456e-78, 'e', 12, 64},
	{"64Fixed16", 1.23456e-78, 'e', 16, 64},
	// From testdata/testfp.txt
	{"64Fixed12Hard", math.Ldexp(6965949469487146, -249), 'e', 12, 64},
	{"64Fixed17Hard", math.Ldexp(8887055249355788, 665), 'e', 17, 64},
	{"64Fixed18Hard", math.Ldexp(6994187472632449, 690), 'e', 18, 64},

	// Trigger slow path (see issue #15672).
	// The shortest is: 8.034137530808823e+43
	{"Slowpath64", 8.03413753080882349e+43, 'e', -1, 64},
	// This denormal is pathological because the lower/upper
	// halfways to neighboring floats are:
	// 622666234635.321003e-320 ~= 622666234635.321e-320
	// 622666234635.321497e-320 ~= 622666234635.3215e-320
	// making it hard to find the 3rd digit
	{"SlowpathDenormal64", 622666234635.3213e-320, 'e', -1, 64},
}

func BenchmarkFormatFloat(b *testing.B) {
	for _, c := range ftoaBenches {
		b.Run(c.name, func(b *testing.B) {
			for i := 0; i < b.N; i++ {
				FormatFloat(c.float, c.fmt, c.prec, c.bitSize)
			}
		})
	}
}

func BenchmarkAppendFloat(b *testing.B) {
	dst := make([]byte, 30)
	for _, c := range ftoaBenches {
		b.Run(c.name, func(b *testing.B) {
			for i := 0; i < b.N; i++ {
				AppendFloat(dst[:0], c.float, c.fmt, c.prec, c.bitSize)
			}
		})
	}
}

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