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constants for integer limits

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R=rsc
DELTA=16  (16 added, 0 deleted, 0 changed)
OCL=32288
CL=32288
This commit is contained in:
Rob Pike 2009-07-28 12:57:33 -07:00
parent 326de9ca97
commit 08b5b4843b
1 changed files with 16 additions and 0 deletions
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16
src/pkg/math/const.go
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@ -21,11 +21,27 @@ const (
Log2E = 1/Ln2;
Ln10 = 2.30258509299404568401799145468436420760110148862877297603332790; // A002392
Log10E = 1/Ln10;
)
// Limit values
const (
MaxFloat32 = 3.40282346638528860e+38;
MinFloat32 = 1.40129846432481707e-45;
MaxFloat64 = 1.7976931348623157e+308;
MinFloat64 = 5.0e-324;
MaxInt8 = 1<<7 - 1;
MinInt8 = -1<<7;
MaxInt16 = 1<<15 - 1;
MinInt16 = -1<<15;
MaxInt32 = 1<<31 - 1;
MinInt32 = -1<<31;
MaxInt64 = 1<<63 - 1;
MinInt64 = -1<<63;
MaxUint8 = 1<<8 - 1;
MaxUint16 = 1<<16 - 1;
MaxUint32 = 1<<32 - 1;
MaxUint64 = 1<<64 - 1;
)
// BUG(rsc): The manual should define the special cases for all of these functions.