codekingpro/portable-devtools

1// run2 3// Copyright 2009 The Go Authors. All rights reserved.4// Use of this source code is governed by a BSD-style5// license that can be found in the LICENSE file.6 7// Test floating-point literal syntax.8 9package main10 11var bad bool12 13func pow10(pow int) float64 {14	if pow < 0 {15		return 1 / pow10(-pow)16	}17	if pow > 0 {18		return pow10(pow-1) * 1019	}20	return 121}22 23func close(da float64, ia, ib int64, pow int) bool {24	db := float64(ia) / float64(ib)25	db *= pow10(pow)26 27	if da == 0 || db == 0 {28		if da == 0 && db == 0 {29			return true30		}31		return false32	}33 34	de := (da - db) / da35	if de < 0 {36		de = -de37	}38 39	if de < 1e-14 {40		return true41	}42	if !bad {43		println("BUG")44		bad = true45	}46	return false47}48 49func main() {50	if !close(0., 0, 1, 0) {51		print("0. is ", 0., "\n")52	}53	if !close(+10., 10, 1, 0) {54		print("+10. is ", +10., "\n")55	}56	if !close(-210., -210, 1, 0) {57		print("-210. is ", -210., "\n")58	}59 60	if !close(.0, 0, 1, 0) {61		print(".0 is ", .0, "\n")62	}63	if !close(+.01, 1, 100, 0) {64		print("+.01 is ", +.01, "\n")65	}66	if !close(-.012, -12, 1000, 0) {67		print("-.012 is ", -.012, "\n")68	}69 70	if !close(0.0, 0, 1, 0) {71		print("0.0 is ", 0.0, "\n")72	}73	if !close(+10.01, 1001, 100, 0) {74		print("+10.01 is ", +10.01, "\n")75	}76	if !close(-210.012, -210012, 1000, 0) {77		print("-210.012 is ", -210.012, "\n")78	}79 80	if !close(0E+1, 0, 1, 0) {81		print("0E+1 is ", 0E+1, "\n")82	}83	if !close(+10e2, 10, 1, 2) {84		print("+10e2 is ", +10e2, "\n")85	}86	if !close(-210e3, -210, 1, 3) {87		print("-210e3 is ", -210e3, "\n")88	}89 90	if !close(0E-1, 0, 1, 0) {91		print("0E-1 is ", 0E-1, "\n")92	}93	if !close(+0e23, 0, 1, 1) {94		print("+0e23 is ", +0e23, "\n")95	}96	if !close(-0e345, 0, 1, 1) {97		print("-0e345 is ", -0e345, "\n")98	}99 100	if !close(0E1, 0, 1, 1) {101		print("0E1 is ", 0E1, "\n")102	}103	if !close(+10e23, 10, 1, 23) {104		print("+10e23 is ", +10e23, "\n")105	}106	if !close(-210e34, -210, 1, 34) {107		print("-210e34 is ", -210e34, "\n")108	}109 110	if !close(0.E1, 0, 1, 1) {111		print("0.E1 is ", 0.E1, "\n")112	}113	if !close(+10.e+2, 10, 1, 2) {114		print("+10.e+2 is ", +10.e+2, "\n")115	}116	if !close(-210.e-3, -210, 1, -3) {117		print("-210.e-3 is ", -210.e-3, "\n")118	}119 120	if !close(.0E1, 0, 1, 1) {121		print(".0E1 is ", .0E1, "\n")122	}123	if !close(+.01e2, 1, 100, 2) {124		print("+.01e2 is ", +.01e2, "\n")125	}126	if !close(-.012e3, -12, 1000, 3) {127		print("-.012e3 is ", -.012e3, "\n")128	}129 130	if !close(0.0E1, 0, 1, 0) {131		print("0.0E1 is ", 0.0E1, "\n")132	}133	if !close(+10.01e2, 1001, 100, 2) {134		print("+10.01e2 is ", +10.01e2, "\n")135	}136	if !close(-210.012e3, -210012, 1000, 3) {137		print("-210.012e3 is ", -210.012e3, "\n")138	}139 140	if !close(0.E+12, 0, 1, 0) {141		print("0.E+12 is ", 0.E+12, "\n")142	}143	if !close(+10.e23, 10, 1, 23) {144		print("+10.e23 is ", +10.e23, "\n")145	}146	if !close(-210.e33, -210, 1, 33) {147		print("-210.e33 is ", -210.e33, "\n")148	}149 150	if !close(.0E-12, 0, 1, 0) {151		print(".0E-12 is ", .0E-12, "\n")152	}153	if !close(+.01e23, 1, 100, 23) {154		print("+.01e23 is ", +.01e23, "\n")155	}156	if !close(-.012e34, -12, 1000, 34) {157		print("-.012e34 is ", -.012e34, "\n")158	}159 160	if !close(0.0E12, 0, 1, 12) {161		print("0.0E12 is ", 0.0E12, "\n")162	}163	if !close(+10.01e23, 1001, 100, 23) {164		print("+10.01e23 is ", +10.01e23, "\n")165	}166	if !close(-210.012e33, -210012, 1000, 33) {167		print("-210.012e33 is ", -210.012e33, "\n")168	}169 170	if !close(0.E123, 0, 1, 123) {171		print("0.E123 is ", 0.E123, "\n")172	}173	if !close(+10.e+23, 10, 1, 23) {174		print("+10.e+234 is ", +10.e+234, "\n")175	}176	if !close(-210.e-35, -210, 1, -35) {177		print("-210.e-35 is ", -210.e-35, "\n")178	}179 180	if !close(.0E123, 0, 1, 123) {181		print(".0E123 is ", .0E123, "\n")182	}183	if !close(+.01e29, 1, 100, 29) {184		print("+.01e29 is ", +.01e29, "\n")185	}186	if !close(-.012e29, -12, 1000, 29) {187		print("-.012e29 is ", -.012e29, "\n")188	}189 190	if !close(0.0E123, 0, 1, 123) {191		print("0.0E123 is ", 0.0E123, "\n")192	}193	if !close(+10.01e31, 1001, 100, 31) {194		print("+10.01e31 is ", +10.01e31, "\n")195	}196	if !close(-210.012e19, -210012, 1000, 19) {197		print("-210.012e19 is ", -210.012e19, "\n")198	}199 200	if bad {201		panic("float_lit")202	}203}204