const math.Pi

32 uses

	math (current package)
		asin.go#L42: 		temp = Pi/2 - satan(temp/x)
		asin.go#L66: 	return Pi/2 - Asin(x)
		atan.go#L85: 		return Pi/2 - xatan(1/x) + Morebits
		atan.go#L87: 	return Pi/4 + xatan((x-1)/(x+1)) + 0.5*Morebits
		atan2.go#L46: 		return Copysign(Pi, y)
		atan2.go#L48: 		return Copysign(Pi/2, y)
		atan2.go#L53: 				return Copysign(Pi/4, y)
		atan2.go#L60: 			return Copysign(3*Pi/4, y)
		atan2.go#L62: 			return Copysign(Pi, y)
		atan2.go#L65: 		return Copysign(Pi/2, y)
		atan2.go#L72: 			return q + Pi
		atan2.go#L74: 		return q - Pi
		const.go#L13: 	Pi  = 3.14159265358979323846264338327950288419716939937510582097494459 // https://oeis.org/A000796
		gamma.go#L164: 		z = q * Sin(Pi*z)
		gamma.go#L172: 			z = Pi / absz / sq1 / sq2
		gamma.go#L174: 			z = Pi / d
		j0.go#L222: 		return U00 + (2/Pi)*Log(x) // |x| < ~7.4506e-9
		j0.go#L227: 	return u/v + (2/Pi)*J0(x)*Log(x) // ~7.4506e-9 < |x| < 2.0
		j1.go#L217: 		return -(2 / Pi) / x
		j1.go#L222: 	return x*(u/v) + (2/Pi)*(J1(x)*Log(x)-1/x)
		lgamma.go#L225: 		nadj = Log(Pi / Abs(t*x))
		lgamma.go#L331: 		return -Sin(Pi * x)
		lgamma.go#L355: 		x = Sin(Pi * x)
		lgamma.go#L357: 		x = Cos(Pi * (0.5 - x))
		lgamma.go#L359: 		x = Sin(Pi * (1 - x))
		lgamma.go#L361: 		x = -Cos(Pi * (x - 1.5))
		lgamma.go#L363: 		x = Sin(Pi * (x - 2))
		sin.go#L146: 		j = uint64(x * (4 / Pi)) // integer part of x/(Pi/4), as integer for tests on the phase angle
		sin.go#L218: 		j = uint64(x * (4 / Pi)) // integer part of x/(Pi/4), as integer for tests on the phase angle
		sincos.go#L42: 		j = uint64(x * (4 / Pi)) // integer part of x/(Pi/4), as integer for tests on the phase angle
		tan.go#L115: 		j = uint64(x * (4 / Pi)) // integer part of x/(Pi/4), as integer for tests on the phase angle
		trig_reduce.go#L32: 	const PI4 = Pi / 4