expm1d128 man page on HP-UX

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expm1d64(3M)							  expm1d64(3M)

NAME
       expm1d64(), expm1d128(), expm1d32() - decimal exponential minus 1 func‐
       tions

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
       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 pro‐
       gramming language C to support decimal floating-point arithmetic".

			   HP Integrity Server Only		  expm1d64(3M)
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