HP SunSoft Pascal 4.0 Manual do Utilizador descarregar pdf (Página 261)

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101

Math Libraries 237

ieee_functions()

The functions described in ieee_functions(3M) provide capabilities either

required by the IEEE standard or recommended in its appendix. Example:

ieee_values()

IEEE values, such as inﬁnity, NaN, minimum and maximum positive ﬂoating-

point numbers, are provided by special functions described in the

ieee_values(3M) man page. Another example follows.

program TestIEEEFunctions(output);

#include "math_p.h"

var

d1: double := 1.0;

d2: double := 2.0;

i1: integer := 1;

begin

writeln('IEEE functions');

writeln(ilogb(d1));

writeln(isnan(d1));

writeln(copysign(d1, d2));

writeln(fabs(d1));

writeln(fmod(d1, d1));

writeln(nextafter(d1, d1));

writeln(remainder(d1, d1));

writeln(scalbn(d1, i1));

end.

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