`abs()`

Function in Builtins

abs(x): absolute value, component-wise.

import { abs } from 'typeshade'

The signature, the description and the examples come from the compiler's own source at commit 26de7be8.

Syntax

const abs: <K extends FloatKey | Float64Key | IntKey>(
  x: ReadonlyNode<K>,
) => Node<K>

Parameters

x ReadonlyNode<K>

Return value

Node<K>

Description

An unsigned operand takes the absU id rather than the portable abs one, because GLSL ES 3.00 has no abs(uint) overload and a WebGL2 driver refuses the call. The choice is divergentIntegerId, shared with the "use typeshade" front end so both authoring surfaces emit the same thing; every other operand keeps the portable spelling.

Examples

Example

import { fn, abs, f32T } from 'typeshade'

const magnitude = fn('magnitude', { x: f32T }, ({ x }) => abs(x))

Targets

Target	Support	Notes
WGSL (WebGPU)	Supported	`abs(a)`. Over `f64` operands the fp64 pass rewrites it into its `df64` helper.
GLSL ES 3.00 (WebGL2)	Supported	`abs(a)`. Over `f64` operands the fp64 pass rewrites it into its `df64` helper.
CPU oracle	Supported	Evaluated in f64 by the oracle.

In the guide

fp64

Source

src/core/ir/node.ts, line 1472, at commit 26de7be8

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