Function expm1 [src]

Alias for std.math.expm1.expm1

Returns e raised to the power of x, minus 1 (e^x - 1). This is more accurate than exp(e, x) - 1 when x is near 0. Special Cases: expm1(+inf) = +inf expm1(-inf) = -1 expm1(nan) = nan

Prototype

pub fn expm1(x: anytype) @TypeOf(x)

Example

 test expm1 {
    try expect(expm1(@as(f32, 0.0)) == expm1_32(0.0));
    try expect(expm1(@as(f64, 0.0)) == expm1_64(0.0));
}

Source

  pub fn expm1(x: anytype) @TypeOf(x) {
    const T = @TypeOf(x);
    return switch (T) {
        f32 => expm1_32(x),
        f64 => expm1_64(x),
        else => @compileError("exp1m not implemented for " ++ @typeName(T)),
    };
}  