hpux man page for expm1d64

expm1d64(3M)															      expm1d64(3M)

NAME
       expm1d64(), expm1d128(), expm1d32() - decimal exponential minus 1 functions

SYNOPSIS
DESCRIPTION
       The function is equivalent to but may be more accurate for very small values of x.

       The and functions are useful to guarantee that financial calculations of (((1+x)**n)-1)/x are accurate when x is very small, namely:

       The preceding example might be applicable when calculating small daily interest rates.

       is a version of it takes a argument and returns a result.

       is a version of it takes a argument and returns a result.

       These math functions are supported for HP-UX 11i Version 3 September 2008 Update and forward.

USAGE
       To use any of these functions, compile with the option.

       Make sure your program defines and then includes

       Link in the math library by specifying or on the linking command line.

       For more information, see the at the following site:

RETURN VALUE
       returns +-0.

       If x is +infinity, returns +infinity.

       If x is -infinity, returns -1.

       If x is NaN, returns a quiet NaN.

       returns	+infinity  (or, in some non-default rounding direction modes, the maximum finite number) in lieu of a value whose magnitude is too
       large, and raises the overflow and inexact exceptions.

       raises the underflow exception whenever a result is tiny (essentially subnormal or zero) and inexact.

       raises the inexact exception whenever a rounded result does not equal the mathematical result.

ERRORS
       If the correct value would overflow, sets to

SEE ALSO
       annuity(3M), cbrtd64(3M), compound(3M), exp10d64(3M), exp2d64(3M), expd64(3M), log1pd64(3M), powd64(3M), sqrtd64(3M), math(5).

STANDARDS CONFORMANCE
       These functions conform to ISO/IEC TR 24732, "Extension for the programming language C to support decimal floating-point arithmetic".

							     HP Integrity Server Only						      expm1d64(3M)