60 lines
2.4 KiB
C++
60 lines
2.4 KiB
C++
/*
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Copyright (c) 2013 Microsoft Corporation. All rights reserved.
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Released under Apache 2.0 license as described in the file LICENSE.
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Author: Leonardo de Moura
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*/
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#include "kernel/environment.h"
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#include "kernel/abstract.h"
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#include "library/arith/special_fn.h"
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#include "library/arith/real.h"
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namespace lean {
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MK_CONSTANT(exp_fn, name("exp"));
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MK_CONSTANT(log_fn, name("log"));
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MK_CONSTANT(real_pi, name("\u03C0")); // lower case pi
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MK_CONSTANT(sin_fn, name("sin"));
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MK_CONSTANT(cos_fn, name("cos"));
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MK_CONSTANT(tan_fn, name("tan"));
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MK_CONSTANT(cot_fn, name("cot"));
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MK_CONSTANT(sec_fn, name("sec"));
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MK_CONSTANT(csc_fn, name("csc"));
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MK_CONSTANT(sinh_fn, name("sinh"));
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MK_CONSTANT(cosh_fn, name("cosh"));
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MK_CONSTANT(tanh_fn, name("tanh"));
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MK_CONSTANT(coth_fn, name("coth"));
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MK_CONSTANT(sech_fn, name("sech"));
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MK_CONSTANT(csch_fn, name("csch"));
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void import_special_fn(environment & env) {
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if (!env.mark_builtin_imported("special_fn"))
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return;
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import_real(env);
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expr r_r = Real >> Real;
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expr x = Const("x");
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env.add_var(exp_fn_name, r_r);
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env.add_var(log_fn_name, r_r);
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env.add_var(real_pi_name, Real);
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env.add_definition(name("pi"), Real, mk_real_pi()); // alias for pi
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env.add_var(sin_fn_name, r_r);
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env.add_definition(cos_fn_name, r_r, Fun({x, Real}, Sin(rSub(x, rDiv(mk_real_pi(), rVal(2))))));
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env.add_definition(tan_fn_name, r_r, Fun({x, Real}, rDiv(Sin(x), Cos(x))));
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env.add_definition(cot_fn_name, r_r, Fun({x, Real}, rDiv(Cos(x), Sin(x))));
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env.add_definition(sec_fn_name, r_r, Fun({x, Real}, rDiv(rVal(1), Cos(x))));
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env.add_definition(csc_fn_name, r_r, Fun({x, Real}, rDiv(rVal(1), Sin(x))));
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env.add_definition(sinh_fn_name, r_r, Fun({x, Real}, rDiv(rSub(rVal(1), Exp(rMul(rVal(-2), x))),
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rMul(rVal(2), Exp(rNeg(x))))));
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env.add_definition(cosh_fn_name, r_r, Fun({x, Real}, rDiv(rAdd(rVal(1), Exp(rMul(rVal(-2), x))),
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rMul(rVal(2), Exp(rNeg(x))))));
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env.add_definition(tanh_fn_name, r_r, Fun({x, Real}, rDiv(Sinh(x), Cosh(x))));
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env.add_definition(coth_fn_name, r_r, Fun({x, Real}, rDiv(Cosh(x), Sinh(x))));
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env.add_definition(sech_fn_name, r_r, Fun({x, Real}, rDiv(rVal(1), Cosh(x))));
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env.add_definition(csch_fn_name, r_r, Fun({x, Real}, rDiv(rVal(1), Sinh(x))));
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}
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}
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