Lerp

lerp

// Imprecise method, which does not guarantee v = v1 when t = 1, due to floating-point arithmetic error.
// This form may be used when the hardware has a native fused multiply-add instruction.
float lerp(float v0, float v1, float t) {
  return v0 + t * (v1 - v0);
}

// Precise method, which guarantees v = v1 when t = 1.
float lerp(float v0, float v1, float t) {
  return (1 - t) * v0 + t * v1;
}