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This is an example of documentation generated by ZigDoc, an alternative to Zig's built-in Auto Doc feature. See also examples in other modes/formats. The project being documented here (as the example) is the Zig standard library. Private Function

frexp_exp32

Private Function
std.math.complex.ldexp.frexp_exp32
fn frexp_exp32(x: f32, expt: *i32) f32

Params

  • x: f32
  • expt: *i32

File

math/complex/ldexp.zig:25
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fn frexp_exp32(x: f32, expt: *i32) f32 {
    const k = 235; // reduction constant
    const kln2 = 162.88958740; // k * ln2

    const exp_x = @exp(x - kln2);
    const hx = @as(u32, @bitCast(exp_x));
    // TODO zig should allow this cast implicitly because it should know the value is in range
    expt.* = @as(i32, @intCast(hx >> 23)) - (0x7f + 127) + k;
    return @as(f32, @bitCast((hx & 0x7fffff) | ((0x7f + 127) << 23)));
}