3 // Copyright 2009 The Go Authors. All rights reserved.
4 // Use of this source code is governed by a BSD-style
5 // license that can be found in the LICENSE file.
7 // Test simple boolean and numeric constants.
36 fhuge float64 = 1 << 100
37 fhuge_1 float64 = chuge - 1
38 f1 float64 = chuge >> 100
43 func assert(t bool, s string) {
52 assert(chuge > chuge_1, "chuge")
53 assert(chuge_1+1 == chuge, "chuge 1")
54 assert(chuge+cm1+1 == chuge, "cm1")
55 assert(c3div2 == 1, "3/2")
56 assert(c1e3 == 1000, "c1e3 int")
57 assert(c1e3 == 1e3, "c1e3 float")
58 assert(rsh1 == 0, "rsh1")
59 assert(rsh2 == 9, "rsh2")
61 // verify that all (in range) are assignable as ints
64 assert(i == c0, "i == c0")
66 assert(i == cm1, "i == cm1")
68 assert(i == c1, "i == c1")
70 assert(i == c3div2, "i == c3div2")
72 assert(i == c1e3, "i == c1e3")
74 // verify that all are assignable as floats
77 assert(f == c0, "f == c0")
79 assert(f == cm1, "f == cm1")
81 assert(f == chuge, "f == chuge")
83 assert(f == chuge_1, "f == chuge_1")
85 assert(f == c1, "f == c1")
87 assert(f == c3div2, "f == c3div2")
89 assert(f == c1e3, "f == c1e3")
93 assert(f0 == c0, "f0")
94 assert(f1 == c1, "f1")
95 // TODO(gri): exp/ssa/interp constant folding is incorrect.
96 if os.Getenv("GOSSAINTERP") == "" {
97 assert(fhuge == fhuge_1, "fhuge") // float64 can't distinguish fhuge, fhuge_1.
99 assert(fhuge_1+1 == fhuge, "fhuge 1")
100 assert(fhuge+fm1+1 == fhuge, "fm1")
101 assert(f3div2 == 1.5, "3./2.")
102 assert(f1e3 == 1000, "f1e3 int")
103 assert(f1e3 == 1.e3, "f1e3 float")
105 // verify that all (in range) are assignable as ints
108 assert(i == f0, "i == f0")
110 assert(i == fm1, "i == fm1")
112 // verify that all are assignable as floats
115 assert(f == f0, "f == f0")
117 assert(f == fm1, "f == fm1")
119 assert(f == fhuge, "f == fhuge")
121 assert(f == fhuge_1, "f == fhuge_1")
123 assert(f == f1, "f == f1")
125 assert(f == f3div2, "f == f3div2")
127 assert(f == f1e3, "f == f1e3")
136 _ = nil == interface{}(nil)
137 _ = interface{}(nil) == nil
139 ii := func(i1 interface{}, i2 interface{}) bool { return i1 == i2 }
140 ni := func(n interface{}, i int) bool { return n == i }
141 in := func(i int, n interface{}) bool { return i == n }
142 pi := func(p *int, i interface{}) bool { return p == i }
143 ip := func(i interface{}, p *int) bool { return i == p }
145 assert((interface{}(nil) == interface{}(nil)) == ii(nilN, nilN),
146 "for interface{}==interface{} compiler == runtime")
148 assert(((*int)(nil) == interface{}(nil)) == pi(nilI, nilN),
149 "for *int==interface{} compiler == runtime")
150 assert((interface{}(nil) == (*int)(nil)) == ip(nilN, nilI),
151 "for interface{}==*int compiler == runtime")
153 assert((&five == interface{}(nil)) == pi(&five, nilN),
154 "for interface{}==*int compiler == runtime")
155 assert((interface{}(nil) == &five) == ip(nilN, &five),
156 "for interface{}==*int compiler == runtime")
158 assert((5 == interface{}(5)) == ni(five, five),
159 "for int==interface{} compiler == runtime")
160 assert((interface{}(5) == 5) == in(five, five),
161 "for interface{}==int comipiler == runtime")
164 // Test that typed floating-point and complex arithmetic
165 // is computed with correct precision.
171 staticF32 = float32(x30) + 1 - x30
172 staticF64 = float64(x60) + 1 - x60
173 staticC64 = complex64(x30) + 1 - x30
174 staticC128 = complex128(x60) + 1 - x60
176 dynamicF32 := float32(x30)
180 dynamicF64 := float64(x60)
184 dynamicC64 := complex64(x30)
188 dynamicC128 := complex128(x60)
192 assert(staticF32 == 0, "staticF32 == 0")
193 assert(staticF64 == 0, "staticF64 == 0")
194 assert(dynamicF32 == 0, "dynamicF32 == 0")
195 assert(dynamicF64 == 0, "dynamicF64 == 0")
196 assert(staticC64 == 0, "staticC64 == 0")
197 assert(staticC128 == 0, "staticC128 == 0")
198 assert(dynamicC64 == 0, "dynamicC64 == 0")
199 assert(dynamicC128 == 0, "dynamicC128 == 0")
208 assert(ctrue == true, "ctrue == true")
209 assert(cfalse == false, "cfalse == false")