copysignf - Linux

Overview

copysignf modifies the sign of a floating-point number while preserving its magnitude. It is useful for adjusting the sign of numbers without affecting their absolute value.

Syntax

copysignf(float x, float y)

Options/Flags

None

Examples

• Change the sign of a number:

  copysignf(-1.5, 1.0)  # Output: 1.5
  

• Adjust the sign for comparison:

  copysignf(-0.0, 1.0) == copysignf(0.0, 1.0)  # Output: true
  

Common Issues

• Incorrect arguments: Ensure that both arguments are valid floating-point numbers.

Integration

copysignf can be combined with other math operations:

• Calculate absolute values:

  fabsf(copysignf(x, 1.0))
  

Related Commands

• fabsf: Compute the absolute value of a floating-point number.
• fmodf: Compute the remainder of dividing two floating-point numbers.