FUNCTION::FP32\_TO\_FP(3stap) Floating point processing Taps FUNCTION::FP32\_TO\_FP(3stap)

# [NAME](#NAME)

function::fp32\_to\_fp64 - Convert fp32 to 64 bit floating point

# [SYNOPSIS](#SYNOPSIS)

```


    fp32_to_fp64:long(input:long)
```

# [ARGUMENTS](#ARGUMENTS)

*input*

a long integer

# [DESCRIPTION](#DESCRIPTION)

Convert from 32 bit floating point to a 64 bit softfloat floating point.

# [SEE ALSO0](#SEE_ALSO0)

[*tapset::floatingpoint*(3stap)](/man/enterprise-packages/systemtap/tapset::floatingpoint.3stap)

September 2026 SystemTap Tapset Reference Ver

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Document: function::fp32_to_fp64(3stap) from systemtap 5.6-r1 (Chainguard OS)
Source: https://sourceware.org/git/systemtap.git