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Test Your Knowledge in Computers #686
Difficulty: Medium
In reverse Polish notation, the operators follow their operands; for instance, to add 3 and 4, one would write 3 4 + rather than 3 + 4.
True or False?
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decimal_to_quadruple(3c) [opensolaris man page]

decimal_to_floating(3C) 				   Standard C Library Functions 				   decimal_to_floating(3C)

decimal_to_floating, decimal_to_single, decimal_to_double, decimal_to_extended, decimal_to_quadruple - convert decimal record to floating- point value SYNOPSIS
#include <floatingpoint.h> void decimal_to_single(single *px, decimal_mode *pm, decimal_record *pd, fp_exception_field_type *ps); void decimal_to_double(double *px, decimal_mode *pm, decimal_record *pd, fp_exception_field_type *ps); void decimal_to_extended(extended *px, decimal_mode *pm, decimal_record *pd, fp_exception_field_type *ps); void decimal_to_quadruple(quadruple *px, decimal_mode *pm, decimal_record *pd, fp_exception_field_type *ps); DESCRIPTION
These functions convert the decimal record *pd to a floating-point value *px observing the rounding direction specified in *pm and setting *ps to reflect any floating-point exceptions that occur. When pd->fpclass is fp_zero, fp_infinity, fp_quiet, or fp_signaling, *px is set to zero, infinity, a quiet NaN, or a signaling NaN, respec- tively, with the sign indicated by pd->sign. All other fields in *pd are ignored. When pd->fpclass is fp_normal or fp_subnormal, pd->ds must contain a null-terminated string of one or more ASCII digits representing a non- zero integer m, and pd->ndigits must be equal to the length of this string. Then *px is set to a correctly rounded approximation to -1**(pd->sign) * m * 10**(pd->exponent) pd->more can be set to a non-zero value to indicate that insignificant trailing digits were omitted from pd->ds. In this case, m is replaced by m + delta in the expression above, where delta is some tiny positive fraction. The converted value is rounded according to the rounding direction specified in pm->rd. pm->df and pm->ndigits are not used. On exit, *ps contains a bitwise OR of flags corresponding to any floating-point exceptions that occurred. The only possible exceptions are underflow, overflow, and inexact. If no floating-point exceptions occurred, *ps is set to zero. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
scanf(3C), string_to_decimal(3C), strtod(3C), attributes(5) SunOS 5.11 1 Oct 2001 decimal_to_floating(3C)

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