| // run |
| |
| // Copyright 2010 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. |
| |
| // Test, near-exhaustive, of converting numbers between types. |
| // No complex numbers though. |
| |
| package main |
| |
| var i8 int8; |
| var u8 uint8; |
| var i16 int16; |
| var u16 uint16; |
| var i32 int32; |
| var u32 uint32; |
| var i64 int64; |
| var u64 uint64; |
| var f32 float32; |
| var f64 float64; |
| |
| type big float64 |
| |
| type t struct { |
| from, to int |
| val big |
| } |
| |
| const ( |
| ti8 = iota+1 |
| tu8 |
| ti16 |
| tu16 |
| ti32 |
| tu32 |
| ti64 |
| tu64 |
| tf32 |
| tf64 |
| ) |
| |
| var x = []t{ |
| |
| /* value good in all types (10) */ |
| { ti8, ti8, 10 }, { ti8, tu8, 10 }, { ti8, ti16, 10 }, { ti8, tu16, 10 }, |
| { ti8, ti32, 10 }, { ti8, tu32, 10 }, { ti8, ti64, 10 }, { ti8, tu64, 10 }, |
| { ti8, tf32, 10 }, { ti8, tf64, 10 }, |
| |
| { tu8, ti8, 10 }, { tu8, tu8, 10 }, { tu8, ti16, 10 }, { tu8, tu16, 10 }, |
| { tu8, ti32, 10 }, { tu8, tu32, 10 }, { tu8, ti64, 10 }, { tu8, tu64, 10 }, |
| { tu8, tf32, 10 }, { tu8, tf64, 10 }, |
| |
| { ti16, ti8, 10 }, { ti16, tu8, 10 }, { ti16, ti16, 10 }, { ti16, tu16, 10 }, |
| { ti16, ti32, 10 }, { ti16, tu32, 10 }, { ti16, ti64, 10 }, { ti16, tu64, 10 }, |
| { ti16, tf32, 10 }, { ti16, tf64, 10 }, |
| |
| { tu16, ti8, 10 }, { tu16, tu8, 10 }, { tu16, ti16, 10 }, { tu16, tu16, 10 }, |
| { tu16, ti32, 10 }, { tu16, tu32, 10 }, { tu16, ti64, 10 }, { tu16, tu64, 10 }, |
| { tu16, tf32, 10 }, { tu16, tf64, 10 }, |
| |
| { ti32, ti8, 10 }, { ti32, tu8, 10 }, { ti32, ti16, 10 }, { ti32, tu16, 10 }, |
| { ti32, ti32, 10 }, { ti32, tu32, 10 }, { ti32, ti64, 10 }, { ti32, tu64, 10 }, |
| { ti32, tf32, 10 }, { ti32, tf64, 10 }, |
| |
| { tu32, ti8, 10 }, { tu32, tu8, 10 }, { tu32, ti16, 10 }, { tu32, tu16, 10 }, |
| { tu32, ti32, 10 }, { tu32, tu32, 10 }, { tu32, ti64, 10 }, { tu32, tu64, 10 }, |
| { tu32, tf32, 10 }, { tu32, tf64, 10 }, |
| |
| { ti64, ti8, 10 }, { ti64, tu8, 10 }, { ti64, ti16, 10 }, { ti64, tu16, 10 }, |
| { ti64, ti32, 10 }, { ti64, tu32, 10 }, { ti64, ti64, 10 }, { ti64, tu64, 10 }, |
| { ti64, tf32, 10 }, { ti64, tf64, 10 }, |
| |
| { tu64, ti8, 10 }, { tu64, tu8, 10 }, { tu64, ti16, 10 }, { tu64, tu16, 10 }, |
| { tu64, ti32, 10 }, { tu64, tu32, 10 }, { tu64, ti64, 10 }, { tu64, tu64, 10 }, |
| { tu64, tf32, 10 }, { tu64, tf64, 10 }, |
| |
| { tf32, ti8, 10 }, { tf32, tu8, 10 }, { tf32, ti16, 10 }, { tf32, tu16, 10 }, |
| { tf32, ti32, 10 }, { tf32, tu32, 10 }, { tf32, ti64, 10 }, { tf32, tu64, 10 }, |
| { tf32, tf32, 10 }, { tf32, tf64, 10 }, |
| |
| { tf64, ti8, 10 }, { tf64, tu8, 10 }, { tf64, ti16, 10 }, { tf64, tu16, 10 }, |
| { tf64, ti32, 10 }, { tf64, tu32, 10 }, { tf64, ti64, 10 }, { tf64, tu64, 10 }, |
| { tf64, tf32, 10 }, { tf64, tf64, 10 }, |
| |
| /* value good in all signed types (-4) */ |
| { ti8, ti8, -4 }, { ti8, ti16, -4 }, |
| { ti8, ti32, -4 }, { ti8, ti64, -4 }, |
| { ti8, tf32, -4 }, { ti8, tf64, -4 }, |
| |
| { ti16, ti8, -4 }, { ti16, ti16, -4 }, |
| { ti16, ti32, -4 }, { ti16, ti64, -4 }, |
| { ti16, tf32, -4 }, |
| |
| { ti32, ti8, -4 }, { ti32, ti16, -4 }, |
| { ti32, ti32, -4 }, { ti32, ti64, -4 }, |
| { ti32, tf32, -4 }, { ti32, tf64, -4 }, |
| |
| { ti64, ti8, -4 }, { ti64, ti16, -4 }, |
| { ti64, ti32, -4 }, { ti64, ti64, -4 }, |
| { ti64, tf32, -4 }, |
| |
| { tf32, ti8, -4 }, { tf32, ti16, -4 }, |
| { tf32, ti32, -4 }, { tf32, ti64, -4 }, |
| { tf32, tf32, -4 }, |
| |
| { tf64, ti8, -4 }, { tf64, ti16, -4 }, |
| { tf64, ti32, -4 }, { tf64, ti64, -4 }, |
| { tf64, tf32, -4 }, { tf64, tf64, -4 }, |
| |
| /* value good in u8 and up (175) */ |
| { tu8, tu8, 175 }, { tu8, ti16, 175 }, { tu8, tu16, 175 }, |
| { tu8, ti32, 175 }, { tu8, tu32, 175 }, { tu8, ti64, 175 }, { tu8, tu64, 175 }, |
| { tu8, tf32, 175 }, { tu8, tf64, 175 }, |
| |
| { ti16, tu8, 175 }, { ti16, ti16, 175 }, { ti16, tu16, 175 }, |
| { ti16, ti32, 175 }, { ti16, tu32, 175 }, { ti16, ti64, 175 }, { ti16, tu64, 175 }, |
| { ti16, tf32, 175 }, { ti16, tf64, 175 }, |
| |
| { tu16, tu8, 175 }, { tu16, ti16, 175 }, { tu16, tu16, 175 }, |
| { tu16, ti32, 175 }, { tu16, tu32, 175 }, { tu16, ti64, 175 }, { tu16, tu64, 175 }, |
| { tu16, tf32, 175 }, { tu16, tf64, 175 }, |
| |
| { ti32, tu8, 175 }, { ti32, ti16, 175 }, { ti32, tu16, 175 }, |
| { ti32, ti32, 175 }, { ti32, tu32, 175 }, { ti32, ti64, 175 }, { ti32, tu64, 175 }, |
| { ti32, tf32, 175 }, { ti32, tf64, 175 }, |
| |
| { tu32, tu8, 175 }, { tu32, ti16, 175 }, { tu32, tu16, 175 }, |
| { tu32, ti32, 175 }, { tu32, tu32, 175 }, { tu32, ti64, 175 }, { tu32, tu64, 175 }, |
| { tu32, tf32, 175 }, { tu32, tf64, 175 }, |
| |
| { ti64, tu8, 175 }, { ti64, ti16, 175 }, { ti64, tu16, 175 }, |
| { ti64, ti32, 175 }, { ti64, tu32, 175 }, { ti64, ti64, 175 }, { ti64, tu64, 175 }, |
| { ti64, tf32, 175 }, { ti64, tf64, 175 }, |
| |
| { tu64, tu8, 175 }, { tu64, ti16, 175 }, { tu64, tu16, 175 }, |
| { tu64, ti32, 175 }, { tu64, tu32, 175 }, { tu64, ti64, 175 }, { tu64, tu64, 175 }, |
| { tu64, tf32, 175 }, { tu64, tf64, 175 }, |
| |
| { tf32, tu8, 175 }, { tf32, ti16, 175 }, { tf32, tu16, 175 }, |
| { tf32, ti32, 175 }, { tf32, tu32, 175 }, { tf32, ti64, 175 }, { tf32, tu64, 175 }, |
| { tf32, tf32, 175 }, { tf32, tf64, 175 }, |
| |
| { tf64, tu8, 175 }, { tf64, ti16, 175 }, { tf64, tu16, 175 }, |
| { tf64, ti32, 175 }, { tf64, tu32, 175 }, { tf64, ti64, 175 }, { tf64, tu64, 175 }, |
| { tf64, tf32, 175 }, { tf64, tf64, 175 }, |
| |
| /* value good in u16 and up (41259) */ |
| { tu16, tu16, 41259 }, |
| { tu16, ti32, 41259 }, { tu16, ti64, 41259 }, { tu16, tu64, 41259 }, |
| { tu16, tf32, 41259 }, { tu16, tf64, 41259 }, |
| |
| { ti32, tu16, 41259 }, |
| { ti32, ti32, 41259 }, { ti32, tu32, 41259 }, { ti32, ti64, 41259 }, { ti32, tu64, 41259 }, |
| { ti32, tf32, 41259 }, { ti32, tf64, 41259 }, |
| |
| { tu32, tu16, 41259 }, |
| { tu32, ti32, 41259 }, { tu32, tu32, 41259 }, { tu32, ti64, 41259 }, { tu32, tu64, 41259 }, |
| { tu32, tf32, 41259 }, { tu32, tf64, 41259 }, |
| |
| { ti64, tu16, 41259 }, |
| { ti64, ti32, 41259 }, { ti64, tu32, 41259 }, { ti64, ti64, 41259 }, { ti64, tu64, 41259 }, |
| { ti64, tf32, 41259 }, { ti64, tf64, 41259 }, |
| |
| { tu64, tu16, 41259 }, |
| { tu64, ti32, 41259 }, { tu64, tu32, 41259 }, { tu64, ti64, 41259 }, { tu64, tu64, 41259 }, |
| { tu64, tf32, 41259 }, { tu64, tf64, 41259 }, |
| |
| { tf32, tu16, 41259 }, |
| { tf32, ti32, 41259 }, { tf32, tu32, 41259 }, { tf32, ti64, 41259 }, { tf32, tu64, 41259 }, |
| { tf32, tf32, 41259 }, { tf32, tf64, 41259 }, |
| |
| { tf64, tu16, 41259 }, |
| { tf64, ti32, 41259 }, { tf64, tu32, 41259 }, { tf64, ti64, 41259 }, { tf64, tu64, 41259 }, |
| { tf64, tf32, 41259 }, { tf64, tf64, 41259 }, |
| |
| /* value good in u32 and up (3758096384) */ |
| { tu32, tu32, 3758096384 }, { tu32, ti64, 3758096384 }, { tu32, tu64, 3758096384 }, |
| { tu32, tf32, 3758096384 }, { tu32, tf64, 3758096384 }, |
| |
| { ti64, tu32, 3758096384 }, { ti64, ti64, 3758096384 }, { ti64, tu64, 3758096384 }, |
| { ti64, tf32, 3758096384 }, { ti64, tf64, 3758096384 }, |
| |
| { tu64, tu32, 3758096384 }, { tu64, ti64, 3758096384 }, { tu64, tu64, 3758096384 }, |
| { tu64, tf32, 3758096384 }, { tu64, tf64, 3758096384 }, |
| |
| { tf32, tu32, 3758096384 }, { tf32, ti64, 3758096384 }, { tf32, tu64, 3758096384 }, |
| { tf32, tf32, 3758096384 }, { tf32, tf64, 3758096384 }, |
| |
| { tf64, tu32, 3758096384 }, { tf64, ti64, 3758096384 }, { tf64, tu64, 3758096384 }, |
| { tf64, tf32, 3758096384 }, { tf64, tf64, 3758096384 }, |
| |
| /* value good in u64 and up (16717361816799281152) */ |
| { tu64, tu64, 16717361816799281152 }, |
| { tu64, tf32, 16717361816799281152 }, { tu64, tf64, 16717361816799281152 }, |
| |
| { tf32, tu64, 16717361816799281152 }, |
| { tf32, tf32, 16717361816799281152 }, { tf32, tf64, 16717361816799281152 }, |
| |
| { tf64, tu64, 16717361816799281152 }, |
| { tf64, tf32, 16717361816799281152 }, { tf64, tf64, 16717361816799281152 }, |
| } |
| |
| func main() { |
| for i:=0; i<len(x); i++ { |
| v := x[i].val // input value |
| w := big(0) // output value |
| f := x[i].from // input type |
| t := x[i].to // output type |
| |
| i8 = 0; u8 = 0; i16 = 0; u16 = 0 |
| i32 = 0; u32 = 0; i64 = 0; u64 = 0 |
| f32 = 0; f64 = 0 |
| |
| switch f*100 + t { |
| default: |
| println("missing case", i, v, f, t) |
| w = v |
| |
| case ti8*100 + ti8: |
| i8 = int8(v); i8 = int8(i8); w = big(i8) |
| case ti8*100 + tu8: |
| i8 = int8(v); u8 = uint8(i8); w = big(u8) |
| case ti8*100 + ti16: |
| i8 = int8(v); i16 = int16(i8); w = big(i16) |
| case ti8*100 + tu16: |
| i8 = int8(v); u16 = uint16(i8); w = big(u16) |
| case ti8*100 + ti32: |
| i8 = int8(v); i32 = int32(i8); w = big(i32) |
| case ti8*100 + tu32: |
| i8 = int8(v); u32 = uint32(i8); w = big(u32) |
| case ti8*100 + ti64: |
| i8 = int8(v); i64 = int64(i8); w = big(i64) |
| case ti8*100 + tu64: |
| i8 = int8(v); u64 = uint64(i8); w = big(u64) |
| case ti8*100 + tf32: |
| i8 = int8(v); f32 = float32(i8); w = big(f32) |
| case ti8*100 + tf64: |
| i8 = int8(v); f64 = float64(i8); w = big(f64) |
| |
| case tu8*100 + ti8: |
| u8 = uint8(v); i8 = int8(u8); w = big(i8) |
| case tu8*100 + tu8: |
| u8 = uint8(v); u8 = uint8(u8); w = big(u8) |
| case tu8*100 + ti16: |
| u8 = uint8(v); i16 = int16(u8); w = big(i16) |
| case tu8*100 + tu16: |
| u8 = uint8(v); u16 = uint16(u8); w = big(u16) |
| case tu8*100 + ti32: |
| u8 = uint8(v); i32 = int32(u8); w = big(i32) |
| case tu8*100 + tu32: |
| u8 = uint8(v); u32 = uint32(u8); w = big(u32) |
| case tu8*100 + ti64: |
| u8 = uint8(v); i64 = int64(u8); w = big(i64) |
| case tu8*100 + tu64: |
| u8 = uint8(v); u64 = uint64(u8); w = big(u64) |
| case tu8*100 + tf32: |
| u8 = uint8(v); f32 = float32(u8); w = big(f32) |
| case tu8*100 + tf64: |
| u8 = uint8(v); f64 = float64(u8); w = big(f64) |
| |
| case ti16*100 + ti8: |
| i16 = int16(v); i8 = int8(i16); w = big(i8) |
| case ti16*100 + tu8: |
| i16 = int16(v); u8 = uint8(i16); w = big(u8) |
| case ti16*100 + ti16: |
| i16 = int16(v); i16 = int16(i16); w = big(i16) |
| case ti16*100 + tu16: |
| i16 = int16(v); u16 = uint16(i16); w = big(u16) |
| case ti16*100 + ti32: |
| i16 = int16(v); i32 = int32(i16); w = big(i32) |
| case ti16*100 + tu32: |
| i16 = int16(v); u32 = uint32(i16); w = big(u32) |
| case ti16*100 + ti64: |
| i16 = int16(v); i64 = int64(i16); w = big(i64) |
| case ti16*100 + tu64: |
| i16 = int16(v); u64 = uint64(i16); w = big(u64) |
| case ti16*100 + tf32: |
| i16 = int16(v); f32 = float32(i16); w = big(f32) |
| case ti16*100 + tf64: |
| i16 = int16(v); f64 = float64(i16); w = big(f64) |
| |
| case tu16*100 + ti8: |
| u16 = uint16(v); i8 = int8(u16); w = big(i8) |
| case tu16*100 + tu8: |
| u16 = uint16(v); u8 = uint8(u16); w = big(u8) |
| case tu16*100 + ti16: |
| u16 = uint16(v); i16 = int16(u16); w = big(i16) |
| case tu16*100 + tu16: |
| u16 = uint16(v); u16 = uint16(u16); w = big(u16) |
| case tu16*100 + ti32: |
| u16 = uint16(v); i32 = int32(u16); w = big(i32) |
| case tu16*100 + tu32: |
| u16 = uint16(v); u32 = uint32(u16); w = big(u32) |
| case tu16*100 + ti64: |
| u16 = uint16(v); i64 = int64(u16); w = big(i64) |
| case tu16*100 + tu64: |
| u16 = uint16(v); u64 = uint64(u16); w = big(u64) |
| case tu16*100 + tf32: |
| u16 = uint16(v); f32 = float32(u16); w = big(f32) |
| case tu16*100 + tf64: |
| u16 = uint16(v); f64 = float64(u16); w = big(f64) |
| |
| case ti32*100 + ti8: |
| i32 = int32(v); i8 = int8(i32); w = big(i8) |
| case ti32*100 + tu8: |
| i32 = int32(v); u8 = uint8(i32); w = big(u8) |
| case ti32*100 + ti16: |
| i32 = int32(v); i16 = int16(i32); w = big(i16) |
| case ti32*100 + tu16: |
| i32 = int32(v); u16 = uint16(i32); w = big(u16) |
| case ti32*100 + ti32: |
| i32 = int32(v); i32 = int32(i32); w = big(i32) |
| case ti32*100 + tu32: |
| i32 = int32(v); u32 = uint32(i32); w = big(u32) |
| case ti32*100 + ti64: |
| i32 = int32(v); i64 = int64(i32); w = big(i64) |
| case ti32*100 + tu64: |
| i32 = int32(v); u64 = uint64(i32); w = big(u64) |
| case ti32*100 + tf32: |
| i32 = int32(v); f32 = float32(i32); w = big(f32) |
| case ti32*100 + tf64: |
| i32 = int32(v); f64 = float64(i32); w = big(f64) |
| |
| case tu32*100 + ti8: |
| u32 = uint32(v); i8 = int8(u32); w = big(i8) |
| case tu32*100 + tu8: |
| u32 = uint32(v); u8 = uint8(u32); w = big(u8) |
| case tu32*100 + ti16: |
| u32 = uint32(v); i16 = int16(u32); w = big(i16) |
| case tu32*100 + tu16: |
| u32 = uint32(v); u16 = uint16(u32); w = big(u16) |
| case tu32*100 + ti32: |
| u32 = uint32(v); i32 = int32(u32); w = big(i32) |
| case tu32*100 + tu32: |
| u32 = uint32(v); u32 = uint32(u32); w = big(u32) |
| case tu32*100 + ti64: |
| u32 = uint32(v); i64 = int64(u32); w = big(i64) |
| case tu32*100 + tu64: |
| u32 = uint32(v); u64 = uint64(u32); w = big(u64) |
| case tu32*100 + tf32: |
| u32 = uint32(v); f32 = float32(u32); w = big(f32) |
| case tu32*100 + tf64: |
| u32 = uint32(v); f64 = float64(u32); w = big(f64) |
| |
| case ti64*100 + ti8: |
| i64 = int64(v); i8 = int8(i64); w = big(i8) |
| case ti64*100 + tu8: |
| i64 = int64(v); u8 = uint8(i64); w = big(u8) |
| case ti64*100 + ti16: |
| i64 = int64(v); i16 = int16(i64); w = big(i16) |
| case ti64*100 + tu16: |
| i64 = int64(v); u16 = uint16(i64); w = big(u16) |
| case ti64*100 + ti32: |
| i64 = int64(v); i32 = int32(i64); w = big(i32) |
| case ti64*100 + tu32: |
| i64 = int64(v); u32 = uint32(i64); w = big(u32) |
| case ti64*100 + ti64: |
| i64 = int64(v); i64 = int64(i64); w = big(i64) |
| case ti64*100 + tu64: |
| i64 = int64(v); u64 = uint64(i64); w = big(u64) |
| case ti64*100 + tf32: |
| i64 = int64(v); f32 = float32(i64); w = big(f32) |
| case ti64*100 + tf64: |
| i64 = int64(v); f64 = float64(i64); w = big(f64) |
| |
| case tu64*100 + ti8: |
| u64 = uint64(v); i8 = int8(u64); w = big(i8) |
| case tu64*100 + tu8: |
| u64 = uint64(v); u8 = uint8(u64); w = big(u8) |
| case tu64*100 + ti16: |
| u64 = uint64(v); i16 = int16(u64); w = big(i16) |
| case tu64*100 + tu16: |
| u64 = uint64(v); u16 = uint16(u64); w = big(u16) |
| case tu64*100 + ti32: |
| u64 = uint64(v); i32 = int32(u64); w = big(i32) |
| case tu64*100 + tu32: |
| u64 = uint64(v); u32 = uint32(u64); w = big(u32) |
| case tu64*100 + ti64: |
| u64 = uint64(v); i64 = int64(u64); w = big(i64) |
| case tu64*100 + tu64: |
| u64 = uint64(v); u64 = uint64(u64); w = big(u64) |
| case tu64*100 + tf32: |
| u64 = uint64(v); f32 = float32(u64); w = big(f32) |
| case tu64*100 + tf64: |
| u64 = uint64(v); f64 = float64(u64); w = big(f64) |
| |
| case tf32*100 + ti8: |
| f32 = float32(v); i8 = int8(f32); w = big(i8) |
| case tf32*100 + tu8: |
| f32 = float32(v); u8 = uint8(f32); w = big(u8) |
| case tf32*100 + ti16: |
| f32 = float32(v); i16 = int16(f32); w = big(i16) |
| case tf32*100 + tu16: |
| f32 = float32(v); u16 = uint16(f32); w = big(u16) |
| case tf32*100 + ti32: |
| f32 = float32(v); i32 = int32(f32); w = big(i32) |
| case tf32*100 + tu32: |
| f32 = float32(v); u32 = uint32(f32); w = big(u32) |
| case tf32*100 + ti64: |
| f32 = float32(v); i64 = int64(f32); w = big(i64) |
| case tf32*100 + tu64: |
| f32 = float32(v); u64 = uint64(f32); w = big(u64) |
| case tf32*100 + tf32: |
| f32 = float32(v); f32 = float32(f32); w = big(f32) |
| case tf32*100 + tf64: |
| f32 = float32(v); f64 = float64(f32); w = big(f64) |
| |
| case tf64*100 + ti8: |
| f64 = float64(v); i8 = int8(f64); w = big(i8) |
| case tf64*100 + tu8: |
| f64 = float64(v); u8 = uint8(f64); w = big(u8) |
| case tf64*100 + ti16: |
| f64 = float64(v); i16 = int16(f64); w = big(i16) |
| case tf64*100 + tu16: |
| f64 = float64(v); u16 = uint16(f64); w = big(u16) |
| case tf64*100 + ti32: |
| f64 = float64(v); i32 = int32(f64); w = big(i32) |
| case tf64*100 + tu32: |
| f64 = float64(v); u32 = uint32(f64); w = big(u32) |
| case tf64*100 + ti64: |
| f64 = float64(v); i64 = int64(f64); w = big(i64) |
| case tf64*100 + tu64: |
| f64 = float64(v); u64 = uint64(f64); w = big(u64) |
| case tf64*100 + tf32: |
| f64 = float64(v); f32 = float32(f64); w = big(f32) |
| case tf64*100 + tf64: |
| f64 = float64(v); f64 = float64(f64); w = big(f64) |
| } |
| if v != w { println(i, v, w, f, t) } |
| } |
| } |
