gitee.com/quant1x/num@v0.3.2/math32/const.go (about)

     1  package math32
     2  
     3  // Mathematical constants.
     4  const (
     5  	E   = float32(2.71828182845904523536028747135266249775724709369995957496696763) // http://oeis.org/A001113
     6  	Pi  = float32(3.14159265358979323846264338327950288419716939937510582097494459) // http://oeis.org/A000796
     7  	Phi = float32(1.61803398874989484820458683436563811772030917980576286213544862) // http://oeis.org/A001622
     8  
     9  	Sqrt2   = float32(1.41421356237309504880168872420969807856967187537694807317667974) // http://oeis.org/A002193
    10  	SqrtE   = float32(1.64872127070012814684865078781416357165377610071014801157507931) // http://oeis.org/A019774
    11  	SqrtPi  = float32(1.77245385090551602729816748334114518279754945612238712821380779) // http://oeis.org/A002161
    12  	SqrtPhi = float32(1.27201964951406896425242246173749149171560804184009624861664038) // http://oeis.org/A139339
    13  
    14  	Ln2    = float32(0.693147180559945309417232121458176568075500134360255254120680009) // http://oeis.org/A002162
    15  	Log2E  = float32(1 / Ln2)
    16  	Ln10   = float32(2.30258509299404568401799145468436420760110148862877297603332790) // http://oeis.org/A002392
    17  	Log10E = float32(1 / Ln10)
    18  )
    19  
    20  // Floating-point limit values.
    21  // Max is the largest finite value representable by the type.
    22  // SmallestNonzero is the smallest positive, non-zero value representable by the type.
    23  const (
    24  	MaxFloat32             = 3.40282346638528859811704183484516925440e+38  // 2**127 * (2**24 - 1) / 2**23
    25  	SmallestNonzeroFloat32 = 1.401298464324817070923729583289916131280e-45 // 1 / 2**(127 - 1 + 23)
    26  )
    27  
    28  // Integer limit values.
    29  const (
    30  	MaxInt8   = 1<<7 - 1
    31  	MinInt8   = -1 << 7
    32  	MaxInt16  = 1<<15 - 1
    33  	MinInt16  = -1 << 15
    34  	MaxInt32  = 1<<31 - 1
    35  	MinInt32  = -1 << 31
    36  	MaxInt64  = 1<<63 - 1
    37  	MinInt64  = -1 << 63
    38  	MaxUint8  = 1<<8 - 1
    39  	MaxUint16 = 1<<16 - 1
    40  	MaxUint32 = 1<<32 - 1
    41  	MaxUint64 = 1<<64 - 1
    42  )