# Double-precision floating point to integer conversion Perform element-wise double-precision floating-point to integer conversion. ## Topics ### Floating point to integer conversion [`static func floatingPointToInteger(T, integerType: U.Type, rounding: vDSP.RoundingMode) -> [U]`](/documentation/Accelerate/vDSP/floatingPointToInteger(_:integerType:rounding:)-33dtm) Returns double-precision values converted to integer values. [`enum RoundingMode`](/documentation/Accelerate/vDSP/RoundingMode) Floating point to integer conversion rounding modes. ### Floating point to 8-bit integer conversion [`static func convertElements(of: U, to: inout V, rounding: vDSP.RoundingMode)`](/documentation/Accelerate/vDSP/convertElements(of:to:rounding:)-2ig4y) Converts double-precision values to 8-bit signed integers. [`static func convertElements(of: U, to: inout V, rounding: vDSP.RoundingMode)`](/documentation/Accelerate/vDSP/convertElements(of:to:rounding:)-3sgv7) Converts double-precision values to 8-bit unsigned integers. [`enum RoundingMode`](/documentation/Accelerate/vDSP/RoundingMode) Floating point to integer conversion rounding modes. [`extern void vDSP_vfix8D(const double *__A, vDSP_Stride __IA, char *__C, vDSP_Stride __IC, vDSP_Length __N);`](/documentation/Accelerate/vDSP_vfix8D) Converts a vector of double-precision floating-point values to signed 8-bit integer values, and rounds towards zero. [`extern void vDSP_vfixr8D(const double *__A, vDSP_Stride __IA, char *__C, vDSP_Stride __IC, vDSP_Length __N);`](/documentation/Accelerate/vDSP_vfixr8D) Converts a vector of double-precision floating-point values to signed 8-bit integer values, and rounds towards the nearest integer. [`extern void vDSP_vfixu8D(const double *__A, vDSP_Stride __IA, unsigned char *__C, vDSP_Stride __IC, vDSP_Length __N);`](/documentation/Accelerate/vDSP_vfixu8D) Converts a vector of double-precision floating-point values to unsigned 8-bit integer values, and rounds towards zero. [`extern void vDSP_vfixru8D(const double *__A, vDSP_Stride __IA, unsigned char *__C, vDSP_Stride __IC, vDSP_Length __N);`](/documentation/Accelerate/vDSP_vfixru8D) Converts a vector of double-precision floating-point values to unsigned 8-bit integer values, and rounds towards the nearest integer. ### Floating point to 16-bit integer conversion [`static func convertElements(of: U, to: inout V, rounding: vDSP.RoundingMode)`](/documentation/Accelerate/vDSP/convertElements(of:to:rounding:)-4xlg5) Converts double-precision values to 16-bit signed integers. [`static func convertElements(of: U, to: inout V, rounding: vDSP.RoundingMode)`](/documentation/Accelerate/vDSP/convertElements(of:to:rounding:)-2oiwm) Converts double-precision values to 16-bit unsigned integers. [`enum RoundingMode`](/documentation/Accelerate/vDSP/RoundingMode) Floating point to integer conversion rounding modes. [`extern void vDSP_vfix16D(const double *__A, vDSP_Stride __IA, short *__C, vDSP_Stride __IC, vDSP_Length __N);`](/documentation/Accelerate/vDSP_vfix16D) Converts a vector of double-precision floating-point values to signed 16-bit integer values, and rounds towards zero. [`extern void vDSP_vfixr16D(const double *__A, vDSP_Stride __IA, short *__C, vDSP_Stride __IC, vDSP_Length __N);`](/documentation/Accelerate/vDSP_vfixr16D) Converts a vector of double-precision floating-point values to signed 16-bit integer values, and rounds towards the nearest integer. [`extern void vDSP_vfixu16D(const double *__A, vDSP_Stride __IA, unsigned short *__C, vDSP_Stride __IC, vDSP_Length __N);`](/documentation/Accelerate/vDSP_vfixu16D) Converts a vector of double-precision floating-point values to unsigned 16-bit integer values, and rounds towards zero. [`extern void vDSP_vfixru16D(const double *__A, vDSP_Stride __IA, unsigned short *__C, vDSP_Stride __IC, vDSP_Length __N);`](/documentation/Accelerate/vDSP_vfixru16D) Converts a vector of double-precision floating-point values to unsigned 16-bit integer values, and rounds towards the nearest integer. ### Floating point to 32-bit integer conversion [`static func convertElements(of: U, to: inout V, rounding: vDSP.RoundingMode)`](/documentation/Accelerate/vDSP/convertElements(of:to:rounding:)-3sxak) Converts double-precision values to 32-bit signed integers. [`static func convertElements(of: U, to: inout V, rounding: vDSP.RoundingMode)`](/documentation/Accelerate/vDSP/convertElements(of:to:rounding:)-3t71v) Converts double-precision values to 32-bit unsigned integers. [`enum RoundingMode`](/documentation/Accelerate/vDSP/RoundingMode) Floating point to integer conversion rounding modes. [`extern void vDSP_vfix32D(const double *__A, vDSP_Stride __IA, int *__C, vDSP_Stride __IC, vDSP_Length __N);`](/documentation/Accelerate/vDSP_vfix32D) Converts a vector of double-precision floating-point values to signed 32-bit integer values, and rounds towards zero. [`extern void vDSP_vfixr32D(const double *__A, vDSP_Stride __IA, int *__C, vDSP_Stride __IC, vDSP_Length __N);`](/documentation/Accelerate/vDSP_vfixr32D) Converts a vector of double-precision floating-point values to signed 32-bit integer values, and rounds towards the nearest integer. [`extern void vDSP_vfixu32D(const double *__A, vDSP_Stride __IA, unsigned int *__C, vDSP_Stride __IC, vDSP_Length __N);`](/documentation/Accelerate/vDSP_vfixu32D) Converts a vector of double-precision floating-point values to unsigned 32-bit integer values, and rounds towards zero. [`extern void vDSP_vfixru32D(const double *__A, vDSP_Stride __IA, unsigned int *__C, vDSP_Stride __IC, vDSP_Length __N);`](/documentation/Accelerate/vDSP_vfixru32D) Converts a vector of double-precision floating-point values to unsigned 32-bit integer values, and rounds towards the nearest integer. --- 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)