eigenmath/ceiling.cpp

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1.3 KiB
C++
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#include "stdafx.h"
#include "defs.h"
void
eval_ceiling(void)
{
push(cadr(p1));
eval();
ceiling();
}
void
ceiling(void)
{
save();
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yyceiling();
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restore();
}
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void
yyceiling(void)
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{
double d;
p1 = pop();
if (!isnum(p1)) {
push_symbol(CEILING);
push(p1);
list(2);
return;
}
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if (isdouble(p1)) {
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d = ceil(p1->u.d);
push_double(d);
return;
}
if (isinteger(p1)) {
push(p1);
return;
}
p3 = alloc();
p3->k = NUM;
p3->u.q.a = mdiv(p1->u.q.a, p1->u.q.b);
p3->u.q.b = mint(1);
push(p3);
if (isnegativenumber(p1))
;
else {
push_integer(1);
add();
}
}
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#if SELFTEST
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static char *s[] = {
"ceiling(a)",
"ceiling(a)",
"ceiling(a+b)",
"ceiling(a+b)",
"ceiling(5/2)",
"3",
"ceiling(4/2)",
"2",
"ceiling(3/2)",
"2",
"ceiling(2/2)",
"1",
"ceiling(1/2)",
"1",
"ceiling(0/2)",
"0",
"ceiling(-1/2)",
"0",
"ceiling(-2/2)",
"-1",
"ceiling(-3/2)",
"-1",
"ceiling(-4/2)",
"-2",
"ceiling(-5/2)",
"-2",
"ceiling(5/2.0)",
"3",
"ceiling(4/2.0)",
"2",
"ceiling(3/2.0)",
"2",
"ceiling(2/2.0)",
"1",
"ceiling(1/2.0)",
"1",
"ceiling(0.0)",
"0",
"ceiling(-1/2.0)",
"0",
"ceiling(-2/2.0)",
"-1",
"ceiling(-3/2.0)",
"-1",
"ceiling(-4/2.0)",
"-2",
"ceiling(-5/2.0)",
"-2",
};
void
test_ceiling(void)
{
test(__FILE__, s, sizeof s / sizeof (char *));
}
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#endif