| /** |
| * Collects functions for compile-time floating-point calculations. |
| * |
| * Copyright: Copyright (C) 1999-2023 by The D Language Foundation, All Rights Reserved |
| * Authors: $(LINK2 https://www.digitalmars.com, Walter Bright) |
| * License: $(LINK2 https://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, out bool isOutOfRange); |
| |
| @system |
| static int sprint(char* str, size_t size, 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(); |
| } |