suzujun/program_number_type.md

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言語間の整数型範囲まとめ

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program_number_type.md

signed: 符号あり

数値範囲	mysql	java	golang	javascript
-128 ~ 127	tinyint	byte	int8	-
-32768 ~ 32767	smallint	short	int16	-
-8388608 ~ 8388607	mediumint	(int)	(int32)	-
-2147483648 ~ 2147483647	int	int	int32	-
-9223372036854775808 ~ 9223372036854775807	bigint	long	int64	○

※カッコは補うためのタイプ

unsigned: 符号なし

数値範囲	mysql	java	golang	javascript
0 ~ 255	tinyint	(short)	uint8	-
0 ~ 65535	smallint	(int)	uint16	-
0 ~ 16777215	mediumint	(int)	(uint32)	-
0 ~ 4294967295	int	(long)	uint32	-
0 ~ 18446744073709551615	bigint	java.math.BigInteger	uint64	-

※カッコは補うためのタイプ

不動少数点数

範囲	mysql	java	golang	javascript
32bit	float	float	float32	-
64bit	double	double	float64	○

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