# formRamp(withInitialValue:increment:result:) Populates a single-precision vector with monotonically incrementing or decrementing values using an initial value and increment. ``` static func formRamp(withInitialValue initialValue: Float, increment: Float, result: inout V) where V : AccelerateMutableBuffer, V.Element == Float ``` ## Parameters `initialValue` The initial value of the ramp. `increment` The increment, or decrement if negative, between each generated element. `result` The array that receives the generated ramp. ## Discussion Use this function to generate and return a vector populated with ramped values. The following code generates a ramped vector with values in the range `0 ... 7`: ```swift let n = 8 let ramp = [Float](unsafeUninitializedCapacity: n) { buffer, initializedCount in vDSP.formRamp(withInitialValue: 0, increment: 1, result: &buffer) initializedCount = n } // Prints "[0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0]". print(ramp) ``` --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)