move all vlib modules to vlib/

vlib/math/math.v

@@ -0,0 +1,140 @@
+// Copyright (c) 2019 Alexander Medvednikov. All rights reserved.
+// Use of this source code is governed by an MIT license
+// that can be found in the LICENSE file.
+
+module math
+
+const (
+	E   = 2.71828182845904523536028747135266249775724709369995957496696763
+	Pi  = 3.14159265358979323846264338327950288419716939937510582097494459
+	Phi = 1.61803398874989484820458683436563811772030917980576286213544862
+	Tau = 6.28318530717958647692528676655900576839433879875021164194988918
+
+	Sqrt2   = 1.41421356237309504880168872420969807856967187537694807317667974
+	SqrtE   = 1.64872127070012814684865078781416357165377610071014801157507931
+	SqrtPi  = 1.77245385090551602729816748334114518279754945612238712821380779
+	SqrtPhi = 1.27201964951406896425242246173749149171560804184009624861664038
+
+	Ln2    = 0.693147180559945309417232121458176568075500134360255254120680009
+	Log2E  = 1.0 / Ln2
+	Ln10   = 2.30258509299404568401799145468436420760110148862877297603332790
+	Log10E = 1.0 / Ln10
+)
+
+pub fn abs(a f64) f64 {
+	if a < 0 {
+		return -a
+	}
+	return a
+}
+
+pub fn acos(a f64) f64 {
+	return C.acos(a)
+}
+
+pub fn asin(a f64) f64 {
+	return C.asin(a)
+}
+
+pub fn atan(a f64) f64 {
+	return C.atan(a)
+}
+
+pub fn atan2(a, b f64) f64 {
+	return C.atan2(a, b)
+}
+
+pub fn ceil(a f64) f64 {
+	return C.ceil(a)
+}
+
+pub fn cos(a f64) f64 {
+	return C.cos(a)
+}
+
+pub fn cosh(a f64) f64 {
+	return C.cosh(a)
+}
+
+pub fn exp(a f64) f64 {
+	return C.exp(a)
+}
+
+pub fn floor(a f64) f64 {
+	return C.floor(a)
+}
+
+pub fn fmod(a, b f64) f64 {
+	return C.fmod(a, b)
+}
+
+pub fn log(a f64) f64 {
+	return C.log(a)
+}
+
+pub fn log10(a f64) f64 {
+	return C.log10(a)
+}
+
+pub fn max(a, b f64) f64 {
+	if a > b {
+		return a
+	}
+	return b
+}
+
+pub fn min(a, b f64) f64 {
+	if a < b {
+		return a
+	}
+	return b
+}
+
+pub fn pow(a, b f64) f64 {
+	return C.pow(a, b)
+}
+
+pub fn radians(degrees f64) f64 {
+	return degrees * (Pi / 180.0)
+}
+
+pub fn degrees(radians f64) f64 {
+	return radians * (180.0 / Pi)
+}
+
+pub fn round(f f64) f64 {
+	return C.round(f)
+}
+
+pub fn sin(a f64) f64 {
+	return C.sin(a)
+}
+
+pub fn sinh(a f64) f64 {
+	return C.sinh(a)
+}
+
+pub fn sqrt(a f64) f64 {
+	return C.sqrt(a)
+}
+
+pub fn tan(a f64) f64 {
+	return C.tan(a)
+}
+
+pub fn tanh(a f64) f64 {
+	return C.tanh(a)
+}
+
+pub fn trunc(a f64) f64 {
+	return C.trunc(a)
+}
+
+pub fn factorial(a int) i64 {
+	mut prod := 1	
+	for i:= 0; i < a; i++ {
+		prod = prod * (i+1)
+	}
+	return prod
+}
+