bd93a36d73
Removed hacky dependency on Round trait and generic infinity functions Removed generic-runtime-failure-depending-on-type behavior
675 lines
20 KiB
Rust
675 lines
20 KiB
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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//! Operations and constants for `f64`
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use cmath;
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use cmp;
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use libc::{c_double, c_int};
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use libc;
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use num::NumCast;
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use num::strconv;
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use num;
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use ops;
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use option::Option;
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use to_str;
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use from_str;
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pub use cmath::c_double_targ_consts::*;
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pub use cmp::{min, max};
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macro_rules! delegate(
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(
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fn $name:ident(
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$(
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$arg:ident : $arg_ty:ty
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),*
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) -> $rv:ty = $bound_name:path
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) => (
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pub pure fn $name($( $arg : $arg_ty ),*) -> $rv {
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unsafe {
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$bound_name($( $arg ),*)
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}
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}
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)
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)
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delegate!(fn acos(n: c_double) -> c_double = cmath::c_double_utils::acos)
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delegate!(fn asin(n: c_double) -> c_double = cmath::c_double_utils::asin)
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delegate!(fn atan(n: c_double) -> c_double = cmath::c_double_utils::atan)
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delegate!(fn atan2(a: c_double, b: c_double) -> c_double =
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cmath::c_double_utils::atan2)
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delegate!(fn cbrt(n: c_double) -> c_double = cmath::c_double_utils::cbrt)
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delegate!(fn ceil(n: c_double) -> c_double = cmath::c_double_utils::ceil)
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delegate!(fn copysign(x: c_double, y: c_double) -> c_double =
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cmath::c_double_utils::copysign)
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delegate!(fn cos(n: c_double) -> c_double = cmath::c_double_utils::cos)
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delegate!(fn cosh(n: c_double) -> c_double = cmath::c_double_utils::cosh)
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delegate!(fn erf(n: c_double) -> c_double = cmath::c_double_utils::erf)
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delegate!(fn erfc(n: c_double) -> c_double = cmath::c_double_utils::erfc)
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delegate!(fn exp(n: c_double) -> c_double = cmath::c_double_utils::exp)
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delegate!(fn expm1(n: c_double) -> c_double = cmath::c_double_utils::expm1)
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delegate!(fn exp2(n: c_double) -> c_double = cmath::c_double_utils::exp2)
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delegate!(fn abs(n: c_double) -> c_double = cmath::c_double_utils::abs)
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delegate!(fn abs_sub(a: c_double, b: c_double) -> c_double =
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cmath::c_double_utils::abs_sub)
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delegate!(fn mul_add(a: c_double, b: c_double, c: c_double) -> c_double =
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cmath::c_double_utils::mul_add)
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delegate!(fn fmax(a: c_double, b: c_double) -> c_double =
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cmath::c_double_utils::fmax)
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delegate!(fn fmin(a: c_double, b: c_double) -> c_double =
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cmath::c_double_utils::fmin)
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delegate!(fn nextafter(x: c_double, y: c_double) -> c_double =
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cmath::c_double_utils::nextafter)
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delegate!(fn frexp(n: c_double, value: &mut c_int) -> c_double =
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cmath::c_double_utils::frexp)
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delegate!(fn hypot(x: c_double, y: c_double) -> c_double =
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cmath::c_double_utils::hypot)
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delegate!(fn ldexp(x: c_double, n: c_int) -> c_double =
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cmath::c_double_utils::ldexp)
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delegate!(fn lgamma(n: c_double, sign: &mut c_int) -> c_double =
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cmath::c_double_utils::lgamma)
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delegate!(fn ln(n: c_double) -> c_double = cmath::c_double_utils::ln)
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delegate!(fn log_radix(n: c_double) -> c_double =
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cmath::c_double_utils::log_radix)
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delegate!(fn ln1p(n: c_double) -> c_double = cmath::c_double_utils::ln1p)
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delegate!(fn log10(n: c_double) -> c_double = cmath::c_double_utils::log10)
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delegate!(fn log2(n: c_double) -> c_double = cmath::c_double_utils::log2)
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delegate!(fn ilog_radix(n: c_double) -> c_int =
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cmath::c_double_utils::ilog_radix)
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delegate!(fn modf(n: c_double, iptr: &mut c_double) -> c_double =
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cmath::c_double_utils::modf)
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delegate!(fn pow(n: c_double, e: c_double) -> c_double =
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cmath::c_double_utils::pow)
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delegate!(fn round(n: c_double) -> c_double = cmath::c_double_utils::round)
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delegate!(fn ldexp_radix(n: c_double, i: c_int) -> c_double =
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cmath::c_double_utils::ldexp_radix)
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delegate!(fn sin(n: c_double) -> c_double = cmath::c_double_utils::sin)
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delegate!(fn sinh(n: c_double) -> c_double = cmath::c_double_utils::sinh)
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delegate!(fn sqrt(n: c_double) -> c_double = cmath::c_double_utils::sqrt)
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delegate!(fn tan(n: c_double) -> c_double = cmath::c_double_utils::tan)
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delegate!(fn tanh(n: c_double) -> c_double = cmath::c_double_utils::tanh)
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delegate!(fn tgamma(n: c_double) -> c_double = cmath::c_double_utils::tgamma)
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delegate!(fn trunc(n: c_double) -> c_double = cmath::c_double_utils::trunc)
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delegate!(fn j0(n: c_double) -> c_double = cmath::c_double_utils::j0)
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delegate!(fn j1(n: c_double) -> c_double = cmath::c_double_utils::j1)
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delegate!(fn jn(i: c_int, n: c_double) -> c_double =
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cmath::c_double_utils::jn)
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delegate!(fn y0(n: c_double) -> c_double = cmath::c_double_utils::y0)
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delegate!(fn y1(n: c_double) -> c_double = cmath::c_double_utils::y1)
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delegate!(fn yn(i: c_int, n: c_double) -> c_double =
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cmath::c_double_utils::yn)
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// FIXME (#1433): obtain these in a different way
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// These are not defined inside consts:: for consistency with
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// the integer types
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pub const radix: uint = 2u;
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pub const mantissa_digits: uint = 53u;
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pub const digits: uint = 15u;
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pub const epsilon: f64 = 2.2204460492503131e-16_f64;
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pub const min_value: f64 = 2.2250738585072014e-308_f64;
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pub const max_value: f64 = 1.7976931348623157e+308_f64;
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pub const min_exp: int = -1021;
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pub const max_exp: int = 1024;
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pub const min_10_exp: int = -307;
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pub const max_10_exp: int = 308;
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pub const NaN: f64 = 0.0_f64/0.0_f64;
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pub const infinity: f64 = 1.0_f64/0.0_f64;
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pub const neg_infinity: f64 = -1.0_f64/0.0_f64;
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#[inline(always)]
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pub pure fn is_NaN(f: f64) -> bool { f != f }
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#[inline(always)]
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pub pure fn add(x: f64, y: f64) -> f64 { return x + y; }
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#[inline(always)]
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pub pure fn sub(x: f64, y: f64) -> f64 { return x - y; }
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#[inline(always)]
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pub pure fn mul(x: f64, y: f64) -> f64 { return x * y; }
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#[inline(always)]
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pub pure fn div(x: f64, y: f64) -> f64 { return x / y; }
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#[inline(always)]
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pub pure fn rem(x: f64, y: f64) -> f64 { return x % y; }
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#[inline(always)]
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pub pure fn lt(x: f64, y: f64) -> bool { return x < y; }
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#[inline(always)]
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pub pure fn le(x: f64, y: f64) -> bool { return x <= y; }
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#[inline(always)]
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pub pure fn eq(x: f64, y: f64) -> bool { return x == y; }
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#[inline(always)]
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pub pure fn ne(x: f64, y: f64) -> bool { return x != y; }
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#[inline(always)]
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pub pure fn ge(x: f64, y: f64) -> bool { return x >= y; }
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#[inline(always)]
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pub pure fn gt(x: f64, y: f64) -> bool { return x > y; }
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/// Returns true if `x` is a positive number, including +0.0f640 and +Infinity
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#[inline(always)]
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pub pure fn is_positive(x: f64) -> bool
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{ return x > 0.0f64 || (1.0f64/x) == infinity; }
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/// Returns true if `x` is a negative number, including -0.0f640 and -Infinity
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#[inline(always)]
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pub pure fn is_negative(x: f64) -> bool
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{ return x < 0.0f64 || (1.0f64/x) == neg_infinity; }
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/**
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* Returns true if `x` is a negative number, including -0.0f640 and -Infinity
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*
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* This is the same as `f64::is_negative`.
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*/
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#[inline(always)]
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pub pure fn is_nonpositive(x: f64) -> bool {
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return x < 0.0f64 || (1.0f64/x) == neg_infinity;
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}
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/**
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* Returns true if `x` is a positive number, including +0.0f640 and +Infinity
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*
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* This is the same as `f64::positive`.
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*/
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#[inline(always)]
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pub pure fn is_nonnegative(x: f64) -> bool {
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return x > 0.0f64 || (1.0f64/x) == infinity;
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}
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/// Returns true if `x` is a zero number (positive or negative zero)
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#[inline(always)]
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pub pure fn is_zero(x: f64) -> bool {
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return x == 0.0f64 || x == -0.0f64;
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}
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/// Returns true if `x`is an infinite number
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#[inline(always)]
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pub pure fn is_infinite(x: f64) -> bool {
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return x == infinity || x == neg_infinity;
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}
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/// Returns true if `x` is a finite number
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#[inline(always)]
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pub pure fn is_finite(x: f64) -> bool {
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return !(is_NaN(x) || is_infinite(x));
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}
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/// Returns `x` rounded down
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#[inline(always)]
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pub pure fn floor(x: f64) -> f64 { unsafe { floorf64(x) } }
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// FIXME (#1999): add is_normal, is_subnormal, and fpclassify
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/* Module: consts */
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pub mod consts {
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// FIXME (requires Issue #1433 to fix): replace with mathematical
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// constants from cmath.
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/// Archimedes' constant
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pub const pi: f64 = 3.14159265358979323846264338327950288_f64;
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/// pi/2.0
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pub const frac_pi_2: f64 = 1.57079632679489661923132169163975144_f64;
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/// pi/4.0
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pub const frac_pi_4: f64 = 0.785398163397448309615660845819875721_f64;
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/// 1.0/pi
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pub const frac_1_pi: f64 = 0.318309886183790671537767526745028724_f64;
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/// 2.0/pi
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pub const frac_2_pi: f64 = 0.636619772367581343075535053490057448_f64;
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/// 2.0/sqrt(pi)
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pub const frac_2_sqrtpi: f64 = 1.12837916709551257389615890312154517_f64;
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/// sqrt(2.0)
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pub const sqrt2: f64 = 1.41421356237309504880168872420969808_f64;
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/// 1.0/sqrt(2.0)
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pub const frac_1_sqrt2: f64 = 0.707106781186547524400844362104849039_f64;
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/// Euler's number
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pub const e: f64 = 2.71828182845904523536028747135266250_f64;
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/// log2(e)
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pub const log2_e: f64 = 1.44269504088896340735992468100189214_f64;
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/// log10(e)
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pub const log10_e: f64 = 0.434294481903251827651128918916605082_f64;
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/// ln(2.0)
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pub const ln_2: f64 = 0.693147180559945309417232121458176568_f64;
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/// ln(10.0)
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pub const ln_10: f64 = 2.30258509299404568401799145468436421_f64;
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}
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#[inline(always)]
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pub pure fn signbit(x: f64) -> int {
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if is_negative(x) { return 1; } else { return 0; }
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}
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#[inline(always)]
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pub pure fn logarithm(n: f64, b: f64) -> f64 {
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return log2(n) / log2(b);
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}
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#[cfg(notest)]
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impl cmp::Eq for f64 {
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#[inline(always)]
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pure fn eq(&self, other: &f64) -> bool { (*self) == (*other) }
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#[inline(always)]
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pure fn ne(&self, other: &f64) -> bool { (*self) != (*other) }
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}
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#[cfg(notest)]
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impl cmp::Ord for f64 {
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#[inline(always)]
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pure fn lt(&self, other: &f64) -> bool { (*self) < (*other) }
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#[inline(always)]
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pure fn le(&self, other: &f64) -> bool { (*self) <= (*other) }
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#[inline(always)]
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pure fn ge(&self, other: &f64) -> bool { (*self) >= (*other) }
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#[inline(always)]
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pure fn gt(&self, other: &f64) -> bool { (*self) > (*other) }
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}
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pub impl f64: NumCast {
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/**
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* Cast `n` to an `f64`
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*/
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#[inline(always)]
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static pure fn from<N:NumCast>(n: N) -> f64 { n.to_f64() }
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#[inline(always)] pure fn to_u8(&self) -> u8 { *self as u8 }
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#[inline(always)] pure fn to_u16(&self) -> u16 { *self as u16 }
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#[inline(always)] pure fn to_u32(&self) -> u32 { *self as u32 }
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#[inline(always)] pure fn to_u64(&self) -> u64 { *self as u64 }
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#[inline(always)] pure fn to_uint(&self) -> uint { *self as uint }
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#[inline(always)] pure fn to_i8(&self) -> i8 { *self as i8 }
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#[inline(always)] pure fn to_i16(&self) -> i16 { *self as i16 }
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#[inline(always)] pure fn to_i32(&self) -> i32 { *self as i32 }
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#[inline(always)] pure fn to_i64(&self) -> i64 { *self as i64 }
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#[inline(always)] pure fn to_int(&self) -> int { *self as int }
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#[inline(always)] pure fn to_f32(&self) -> f32 { *self as f32 }
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#[inline(always)] pure fn to_f64(&self) -> f64 { *self }
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#[inline(always)] pure fn to_float(&self) -> float { *self as float }
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}
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impl num::Zero for f64 {
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#[inline(always)]
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static pure fn zero() -> f64 { 0.0 }
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}
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impl num::One for f64 {
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#[inline(always)]
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static pure fn one() -> f64 { 1.0 }
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}
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#[cfg(notest)]
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impl ops::Add<f64,f64> for f64 {
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pure fn add(&self, other: &f64) -> f64 { *self + *other }
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}
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#[cfg(notest)]
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impl ops::Sub<f64,f64> for f64 {
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pure fn sub(&self, other: &f64) -> f64 { *self - *other }
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}
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#[cfg(notest)]
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impl ops::Mul<f64,f64> for f64 {
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pure fn mul(&self, other: &f64) -> f64 { *self * *other }
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}
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#[cfg(notest)]
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impl ops::Div<f64,f64> for f64 {
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pure fn div(&self, other: &f64) -> f64 { *self / *other }
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}
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#[cfg(notest)]
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impl ops::Modulo<f64,f64> for f64 {
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pure fn modulo(&self, other: &f64) -> f64 { *self % *other }
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}
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#[cfg(notest)]
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impl ops::Neg<f64> for f64 {
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pure fn neg(&self) -> f64 { -*self }
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}
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#[abi="rust-intrinsic"]
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pub extern {
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fn floorf64(val: f64) -> f64;
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}
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impl num::Round for f64 {
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#[inline(always)]
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pure fn round(&self, mode: num::RoundMode) -> f64 {
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match mode {
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num::RoundDown => floor(*self),
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num::RoundUp => ceil(*self),
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num::RoundToZero if is_negative(*self) => ceil(*self),
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num::RoundToZero => floor(*self),
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num::RoundFromZero if is_negative(*self) => floor(*self),
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num::RoundFromZero => ceil(*self)
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}
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}
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#[inline(always)]
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pure fn floor(&self) -> f64 { floor(*self) }
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#[inline(always)]
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pure fn ceil(&self) -> f64 { ceil(*self) }
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#[inline(always)]
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pure fn fract(&self) -> f64 {
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if is_negative(*self) {
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(*self) - ceil(*self)
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} else {
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(*self) - floor(*self)
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}
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}
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}
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/**
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* Section: String Conversions
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*/
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/**
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* Converts a float to a string
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*
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* # Arguments
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*
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* * num - The float value
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*/
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#[inline(always)]
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pub pure fn to_str(num: f64) -> ~str {
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let (r, _) = strconv::to_str_common(
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&num, 10u, true, strconv::SignNeg, strconv::DigAll);
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r
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}
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/**
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* Converts a float to a string in hexadecimal format
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*
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* # Arguments
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*
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* * num - The float value
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*/
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#[inline(always)]
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pub pure fn to_str_hex(num: f64) -> ~str {
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let (r, _) = strconv::to_str_common(
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&num, 16u, true, strconv::SignNeg, strconv::DigAll);
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r
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}
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/**
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* Converts a float to a string in a given radix
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*
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* # Arguments
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*
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* * num - The float value
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* * radix - The base to use
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*
|
|
* # Failure
|
|
*
|
|
* Fails if called on a special value like `inf`, `-inf` or `NaN` due to
|
|
* possible misinterpretation of the result at higher bases. If those values
|
|
* are expected, use `to_str_radix_special()` instead.
|
|
*/
|
|
#[inline(always)]
|
|
pub pure fn to_str_radix(num: f64, rdx: uint) -> ~str {
|
|
let (r, special) = strconv::to_str_common(
|
|
&num, rdx, true, strconv::SignNeg, strconv::DigAll);
|
|
if special { fail!(~"number has a special value, \
|
|
try to_str_radix_special() if those are expected") }
|
|
r
|
|
}
|
|
|
|
/**
|
|
* Converts a float to a string in a given radix, and a flag indicating
|
|
* whether it's a special value
|
|
*
|
|
* # Arguments
|
|
*
|
|
* * num - The float value
|
|
* * radix - The base to use
|
|
*/
|
|
#[inline(always)]
|
|
pub pure fn to_str_radix_special(num: f64, rdx: uint) -> (~str, bool) {
|
|
strconv::to_str_common(&num, rdx, true,
|
|
strconv::SignNeg, strconv::DigAll)
|
|
}
|
|
|
|
/**
|
|
* Converts a float to a string with exactly the number of
|
|
* provided significant digits
|
|
*
|
|
* # Arguments
|
|
*
|
|
* * num - The float value
|
|
* * digits - The number of significant digits
|
|
*/
|
|
#[inline(always)]
|
|
pub pure fn to_str_exact(num: f64, dig: uint) -> ~str {
|
|
let (r, _) = strconv::to_str_common(
|
|
&num, 10u, true, strconv::SignNeg, strconv::DigExact(dig));
|
|
r
|
|
}
|
|
|
|
/**
|
|
* Converts a float to a string with a maximum number of
|
|
* significant digits
|
|
*
|
|
* # Arguments
|
|
*
|
|
* * num - The float value
|
|
* * digits - The number of significant digits
|
|
*/
|
|
#[inline(always)]
|
|
pub pure fn to_str_digits(num: f64, dig: uint) -> ~str {
|
|
let (r, _) = strconv::to_str_common(
|
|
&num, 10u, true, strconv::SignNeg, strconv::DigMax(dig));
|
|
r
|
|
}
|
|
|
|
impl to_str::ToStr for f64 {
|
|
#[inline(always)]
|
|
pure fn to_str(&self) -> ~str { to_str_digits(*self, 8) }
|
|
}
|
|
|
|
impl num::ToStrRadix for f64 {
|
|
#[inline(always)]
|
|
pure fn to_str_radix(&self, rdx: uint) -> ~str {
|
|
to_str_radix(*self, rdx)
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Convert a string in base 10 to a float.
|
|
* Accepts a optional decimal exponent.
|
|
*
|
|
* This function accepts strings such as
|
|
*
|
|
* * '3.14'
|
|
* * '+3.14', equivalent to '3.14'
|
|
* * '-3.14'
|
|
* * '2.5E10', or equivalently, '2.5e10'
|
|
* * '2.5E-10'
|
|
* * '.' (understood as 0)
|
|
* * '5.'
|
|
* * '.5', or, equivalently, '0.5'
|
|
* * '+inf', 'inf', '-inf', 'NaN'
|
|
*
|
|
* Leading and trailing whitespace represent an error.
|
|
*
|
|
* # Arguments
|
|
*
|
|
* * num - A string
|
|
*
|
|
* # Return value
|
|
*
|
|
* `none` if the string did not represent a valid number. Otherwise,
|
|
* `Some(n)` where `n` is the floating-point number represented by `num`.
|
|
*/
|
|
#[inline(always)]
|
|
pub pure fn from_str(num: &str) -> Option<f64> {
|
|
strconv::from_str_common(num, 10u, true, true, true,
|
|
strconv::ExpDec, false)
|
|
}
|
|
|
|
/**
|
|
* Convert a string in base 16 to a float.
|
|
* Accepts a optional binary exponent.
|
|
*
|
|
* This function accepts strings such as
|
|
*
|
|
* * 'a4.fe'
|
|
* * '+a4.fe', equivalent to 'a4.fe'
|
|
* * '-a4.fe'
|
|
* * '2b.aP128', or equivalently, '2b.ap128'
|
|
* * '2b.aP-128'
|
|
* * '.' (understood as 0)
|
|
* * 'c.'
|
|
* * '.c', or, equivalently, '0.c'
|
|
* * '+inf', 'inf', '-inf', 'NaN'
|
|
*
|
|
* Leading and trailing whitespace represent an error.
|
|
*
|
|
* # Arguments
|
|
*
|
|
* * num - A string
|
|
*
|
|
* # Return value
|
|
*
|
|
* `none` if the string did not represent a valid number. Otherwise,
|
|
* `Some(n)` where `n` is the floating-point number represented by `[num]`.
|
|
*/
|
|
#[inline(always)]
|
|
pub pure fn from_str_hex(num: &str) -> Option<f64> {
|
|
strconv::from_str_common(num, 16u, true, true, true,
|
|
strconv::ExpBin, false)
|
|
}
|
|
|
|
/**
|
|
* Convert a string in an given base to a float.
|
|
*
|
|
* Due to possible conflicts, this function does **not** accept
|
|
* the special values `inf`, `-inf`, `+inf` and `NaN`, **nor**
|
|
* does it recognize exponents of any kind.
|
|
*
|
|
* Leading and trailing whitespace represent an error.
|
|
*
|
|
* # Arguments
|
|
*
|
|
* * num - A string
|
|
* * radix - The base to use. Must lie in the range [2 .. 36]
|
|
*
|
|
* # Return value
|
|
*
|
|
* `none` if the string did not represent a valid number. Otherwise,
|
|
* `Some(n)` where `n` is the floating-point number represented by `num`.
|
|
*/
|
|
#[inline(always)]
|
|
pub pure fn from_str_radix(num: &str, rdx: uint) -> Option<f64> {
|
|
strconv::from_str_common(num, rdx, true, true, false,
|
|
strconv::ExpNone, false)
|
|
}
|
|
|
|
impl from_str::FromStr for f64 {
|
|
#[inline(always)]
|
|
static pure fn from_str(val: &str) -> Option<f64> { from_str(val) }
|
|
}
|
|
|
|
impl num::FromStrRadix for f64 {
|
|
#[inline(always)]
|
|
static pure fn from_str_radix(val: &str, rdx: uint) -> Option<f64> {
|
|
from_str_radix(val, rdx)
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
pub fn test_num() {
|
|
let ten: f64 = num::cast(10);
|
|
let two: f64 = num::cast(2);
|
|
|
|
assert (ten.add(&two) == num::cast(12));
|
|
assert (ten.sub(&two) == num::cast(8));
|
|
assert (ten.mul(&two) == num::cast(20));
|
|
assert (ten.div(&two) == num::cast(5));
|
|
assert (ten.modulo(&two) == num::cast(0));
|
|
}
|
|
|
|
#[test]
|
|
fn test_numcast() {
|
|
assert (20u == 20f64.to_uint());
|
|
assert (20u8 == 20f64.to_u8());
|
|
assert (20u16 == 20f64.to_u16());
|
|
assert (20u32 == 20f64.to_u32());
|
|
assert (20u64 == 20f64.to_u64());
|
|
assert (20i == 20f64.to_int());
|
|
assert (20i8 == 20f64.to_i8());
|
|
assert (20i16 == 20f64.to_i16());
|
|
assert (20i32 == 20f64.to_i32());
|
|
assert (20i64 == 20f64.to_i64());
|
|
assert (20f == 20f64.to_float());
|
|
assert (20f32 == 20f64.to_f32());
|
|
assert (20f64 == 20f64.to_f64());
|
|
|
|
assert (20f64 == NumCast::from(20u));
|
|
assert (20f64 == NumCast::from(20u8));
|
|
assert (20f64 == NumCast::from(20u16));
|
|
assert (20f64 == NumCast::from(20u32));
|
|
assert (20f64 == NumCast::from(20u64));
|
|
assert (20f64 == NumCast::from(20i));
|
|
assert (20f64 == NumCast::from(20i8));
|
|
assert (20f64 == NumCast::from(20i16));
|
|
assert (20f64 == NumCast::from(20i32));
|
|
assert (20f64 == NumCast::from(20i64));
|
|
assert (20f64 == NumCast::from(20f));
|
|
assert (20f64 == NumCast::from(20f32));
|
|
assert (20f64 == NumCast::from(20f64));
|
|
|
|
assert (20f64 == num::cast(20u));
|
|
assert (20f64 == num::cast(20u8));
|
|
assert (20f64 == num::cast(20u16));
|
|
assert (20f64 == num::cast(20u32));
|
|
assert (20f64 == num::cast(20u64));
|
|
assert (20f64 == num::cast(20i));
|
|
assert (20f64 == num::cast(20i8));
|
|
assert (20f64 == num::cast(20i16));
|
|
assert (20f64 == num::cast(20i32));
|
|
assert (20f64 == num::cast(20i64));
|
|
assert (20f64 == num::cast(20f));
|
|
assert (20f64 == num::cast(20f32));
|
|
assert (20f64 == num::cast(20f64));
|
|
}
|
|
|
|
//
|
|
// Local Variables:
|
|
// mode: rust
|
|
// fill-column: 78;
|
|
// indent-tabs-mode: nil
|
|
// c-basic-offset: 4
|
|
// buffer-file-coding-system: utf-8-unix
|
|
// End:
|
|
//
|