39 lines
466 B
C++
39 lines
466 B
C++
#include "stdafx.h"
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#include "defs.h"
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void
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eval_arcsinh(void)
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{
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push(cadr(p1));
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eval();
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arcsinh();
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}
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void
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arcsinh(void)
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{
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double d;
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save();
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p1 = pop();
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if (car(p1) == symbol(SINH)) {
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push(cadr(p1));
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restore();
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return;
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}
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if (isdouble(p1)) {
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d = p1->u.d;
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d = log(d + sqrt(d * d + 1.0));
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push_double(d);
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restore();
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return;
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}
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if (iszero(p1)) {
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push(zero);
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restore();
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return;
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}
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push_symbol(ARCSINH);
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push(p1);
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list(2);
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restore();
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} |