harn-vm 0.5.21

Async bytecode virtual machine for the Harn programming language
Documentation 
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// std/math — Extended math utilities
//
// Import with: import "std/math"

/// Clamp a value between min and max.
fn clamp(value, lo, hi) {
  if value < lo { return lo }
  if value > hi { return hi }
  return value
}

/// Linear interpolation between a and b by t (0..1).
fn lerp(a, b, t) {
  return a + (b - a) * t
}

/// Map a value from one range to another.
fn map_range(value, in_lo, in_hi, out_lo, out_hi) {
  let t = (value - in_lo) / (in_hi - in_lo)
  return lerp(out_lo, out_hi, t)
}

/// Convert degrees to radians.
fn deg_to_rad(degrees) {
  return degrees * pi / 180
}

/// Convert radians to degrees.
fn rad_to_deg(radians) {
  return radians * 180 / pi
}

/// Sum a list of numbers.
fn sum(items) {
  return items.reduce(0, { acc, x -> acc + x })
}

/// Average of a list of numbers.
fn avg(items) {
  if len(items) == 0 { return 0 }
  return sum(items) / len(items)
}