Orkuncakilkaya
e010c2cecc
`float` (32-bit) and `double` (64-bit) with + - * / %, comparisons and unary minus. Decimal literals take their type from context and stay `fixed` elsewhere; int and long promote implicitly (LUDIC_WARN_FLOAT_PROMOTE=1 lists every promotion). float(), double(), int(), long() and fixed() convert; floats(n)/doubles(n) buffers; float fields, globals, constants and parameters; Math.* computes in float for float arguments; string/print write the shortest round-tripping decimal; float_bits/float_from_bits expose the bits. @deterministic code may not use floats. The f_* runtime helpers stay as they are. Editors know the new type words; the JetBrains plugin is 1.5.0. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
25 lines
829 B
Markdown
25 lines
829 B
Markdown
---
|
|
id: fn-float
|
|
name: float
|
|
category: builtins
|
|
kind: builtin
|
|
tokens: float double
|
|
sig: float(x) -> float / double(x) -> double
|
|
tip: Convert any number to a float (or double).
|
|
order: 51
|
|
---
|
|
|
|
Converts an <code>int</code>, <code>long</code>, <code>fixed</code>, <code>float</code> or <code>double</code> to a <code>float</code> (or, with <code>double(x)</code>, to a <code>double</code>). It is the one conversion that crosses from fixed-point to floating point: `float(fixed(1)) / 4.0` is <code>0.25</code>. A decimal literal converts exactly, so `float(0.1)` is the nearest float to 0.1, not the nearest Q16.16 value.
|
|
|
|
Parameters:
|
|
- `x` — the number to convert
|
|
|
|
```ludic
|
|
program Convert {
|
|
entry {
|
|
let half = fixed(1) / 2
|
|
print(float(half) * 3.0) # 1.5
|
|
print(double(7) / 2) # 3.5
|
|
}
|
|
}
|
|
```
|