---
name: "function::fp_sub"
section: "3stap"
platform: "linux"
package: "systemtap-doc"
version: "5.1-5"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/function::fp_sub"
---

# function::fp\_sub(3stap)

Subtraction between floating points

## NAME

function::fp\_sub - Subtraction between floating points

## SYNOPSIS

```
    fp_sub:long(sub1:long,sub2:long)
```

## ARGUMENTS

*sub1*

the 64 bit floating point minuend

*sub2*

64 bit floating point subtrahend

## DESCRIPTION

result would be minuend minus subtrahend

## SEE ALSO0

[*tapset::floatingpoint*(3stap)](/tapset::floatingpoint/3stap.md)