mirror of
https://github.com/matrix-construct/construct
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94 lines
4.8 KiB
C
94 lines
4.8 KiB
C
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// Copyright (C) Matrix Construct Developers, Authors & Contributors
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// Copyright (C) 2016-2018 Jason Volk
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//
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// Permission to use, copy, modify, and/or distribute this software for any
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// purpose with or without fee is hereby granted, provided that the above
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// copyright notice and this permission notice is present in all copies.
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//
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// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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// DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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// INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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// HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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// IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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#pragma once
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#define HAVE_IRCD_UTIL_UNIT_LITERAL_H
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//
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// C++14 user defined literals
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//
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// These are very useful for dealing with space. Simply write 8_MiB and it's
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// as if a macro turned that into (8 * 1024 * 1024) at compile time.
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//
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/// (Internal) Defines a unit literal with an unsigned long long basis.
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///
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#define IRCD_UNIT_LITERAL_UL(name, morphism) \
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constexpr auto \
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operator"" _ ## name(const unsigned long long val) \
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{ \
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return (morphism); \
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}
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/// (Internal) Defines a unit literal with a signed long long basis
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///
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#define IRCD_UNIT_LITERAL_LL(name, morphism) \
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constexpr auto \
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operator"" _ ## name(const long long val) \
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{ \
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return (morphism); \
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}
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/// (Internal) Defines a unit literal with a long double basis
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///
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#define IRCD_UNIT_LITERAL_LD(name, morphism) \
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constexpr auto \
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operator"" _ ## name(const long double val) \
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{ \
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return (morphism); \
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}
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namespace ircd {
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namespace util {
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// IEC unit literals
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IRCD_UNIT_LITERAL_UL( B, val )
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IRCD_UNIT_LITERAL_UL( KiB, val * 1024LL )
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IRCD_UNIT_LITERAL_UL( MiB, val * 1024LL * 1024LL )
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IRCD_UNIT_LITERAL_UL( GiB, val * 1024LL * 1024LL * 1024LL )
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IRCD_UNIT_LITERAL_UL( TiB, val * 1024LL * 1024LL * 1024LL * 1024LL )
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IRCD_UNIT_LITERAL_UL( PiB, val * 1024LL * 1024LL * 1024LL * 1024LL * 1024LL )
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IRCD_UNIT_LITERAL_UL( EiB, val * 1024LL * 1024LL * 1024LL * 1024LL * 1024LL * 1024LL )
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IRCD_UNIT_LITERAL_LD( B, val )
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IRCD_UNIT_LITERAL_LD( KiB, val * 1024.0L )
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IRCD_UNIT_LITERAL_LD( MiB, val * 1024.0L * 1024.0L )
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IRCD_UNIT_LITERAL_LD( GiB, val * 1024.0L * 1024.0L * 1024.0L )
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IRCD_UNIT_LITERAL_LD( TiB, val * 1024.0L * 1024.0L * 1024.0L * 1024.0L )
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IRCD_UNIT_LITERAL_LD( PiB, val * 1024.0L * 1024.0L * 1024.0L * 1024.0L * 1024.0L )
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IRCD_UNIT_LITERAL_LD( EiB, val * 1024.0L * 1024.0L * 1024.0L * 1024.0L * 1024.0L * 1024.0L )
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// SI unit literals
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IRCD_UNIT_LITERAL_UL( KB, val * 1000LL )
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IRCD_UNIT_LITERAL_UL( MB, val * 1000LL * 1000LL )
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IRCD_UNIT_LITERAL_UL( GB, val * 1000LL * 1000LL * 1000LL )
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IRCD_UNIT_LITERAL_UL( TB, val * 1000LL * 1000LL * 1000LL * 1000LL )
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IRCD_UNIT_LITERAL_UL( PB, val * 1000LL * 1000LL * 1000LL * 1000LL * 1000LL )
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IRCD_UNIT_LITERAL_UL( EB, val * 1000LL * 1000LL * 1000LL * 1000LL * 1000LL * 1000LL )
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IRCD_UNIT_LITERAL_LD( KB, val * 1000.0L )
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IRCD_UNIT_LITERAL_LD( MB, val * 1000.0L * 1000.0L )
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IRCD_UNIT_LITERAL_LD( GB, val * 1000.0L * 1000.0L * 1000.0L )
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IRCD_UNIT_LITERAL_LD( TB, val * 1000.0L * 1000.0L * 1000.0L * 1000.0L )
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IRCD_UNIT_LITERAL_LD( PB, val * 1000.0L * 1000.0L * 1000.0L * 1000.0L * 1000.0L )
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IRCD_UNIT_LITERAL_LD( EB, val * 1000.0L * 1000.0L * 1000.0L * 1000.0L * 1000.0L * 1000.0L )
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} // namespace util
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} // namespace ircd
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