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/**
* Collects functions for compile-time floating-point calculations.
*
* Copyright: Copyright (C) 1999-2021 by The D Language Foundation, All Rights Reserved
* Authors: $(LINK2 http://www.digitalmars.com, Walter Bright)
* License: $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
* Source: $(LINK2 https://github.com/dlang/dmd/blob/master/src/dmd/root/ctfloat.d, root/_ctfloat.d)
* Documentation: https://dlang.org/phobos/dmd_root_ctfloat.html
* Coverage: https://codecov.io/gh/dlang/dmd/src/master/src/dmd/root/ctfloat.d
*/
module dmd.root.ctfloat;
nothrow:
// Type used by the front-end for compile-time reals
public import dmd.root.longdouble : real_t = longdouble;
// Compile-time floating-point helper
extern (C++) struct CTFloat
{
nothrow:
@nogc:
@safe:
version (GNU)
enum yl2x_supported = false;
else
enum yl2x_supported = __traits(compiles, core.math.yl2x(1.0L, 2.0L));
enum yl2xp1_supported = yl2x_supported;
pure static real_t fabs(real_t x);
pure static real_t ldexp(real_t n, int exp);
pure @trusted
static bool isIdentical(real_t a, real_t b);
pure @trusted
static size_t hash(real_t a);
pure
static bool isNaN(real_t r);
pure @trusted
static bool isSNaN(real_t r);
static bool isInfinity(real_t r) pure;
@system
static real_t parse(const(char)* literal, bool* isOutOfRange = null);
@system
static int sprint(char* str, char fmt, real_t x);
// Constant real values 0, 1, -1 and 0.5.
__gshared real_t zero;
__gshared real_t one;
__gshared real_t minusone;
__gshared real_t half;
@trusted
static void initialize();
}
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