exp man page on SmartOS

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```exp(3M)			Mathematical Library Functions		       exp(3M)

NAME
exp, expf, expl - exponential function

SYNOPSIS
c99 [ flag... ] file... -lm [ library... ]
#include <math.h>

double exp(double x);

float expf(float x);

long double expl(long double x);

DESCRIPTION
These functions compute the base-e exponential of x.

RETURN VALUES
Upon  successful	 completion,  these  functions	return the exponential
value of x.

If the correct value would cause overflow, a  range  error  occurs  and
exp(),  expf(),	and  expl() return HUGE_VAL, HUGE_VALF, and HUGE_VALL,
respectively.

If x is NaN, a NaN is returned.

If x is ±0, 1 is returned.

If x is +Inf, x is returned.

For exceptional cases, matherr(3M) tabulates the values to be  returned
by exp() as specified by SVID3 and XPG3. See standards(5).

ERRORS
These functions will fail if:

Range Error    The result overflows.

If    the	  integer   expression	 (math_errhandling   &
MATH_ERREXCEPT) is non-zero, the overflow floating-point
exception is raised.

The  exp()  function  sets errno to ERANGE if the result
overflows.

USAGE
An application wanting to check for exceptions should  call  feclearex‐
cept(FE_ALL_EXCEPT)  before  calling  these  functions.	On  return, if
fetestexcept(FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW) is
non-zero,  an  exception	 has been raised. An application should either
examine the return value or check the floating point exception flags to
detect exceptions.

An application can also set errno to 0 before calling exp(). On return,
if errno is non-zero, an error has  occurred.  The  expf()  and	expl()
functions do not set errno.

ATTRIBUTES
See attributes(5) for descriptions of the following attributes:

┌─────────────────────────────┬─────────────────────────────┐
│      ATTRIBUTE TYPE	     │	    ATTRIBUTE VALUE	   │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability	     │Standard			   │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level		     │MT-Safe			   │
└─────────────────────────────┴─────────────────────────────┘

matherr(3M), mp(3MP), attributes(5), standards(5)

SunOS 5.11			  12 Jul 2006			       exp(3M)
```
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