EXP(3) | Library Functions Manual | EXP(3) |
exp
, expf
,
exp2
, exp2f
,
expm1
, expm1f
—
#include <math.h>
double
exp
(double
x);
float
expf
(float
x);
double
exp2
(double
x);
float
exp2f
(float
x);
double
expm1
(double
x);
float
expm1f
(float
x);
exp
() and expf
() functions
compute the base e exponential value of the given
argument x.
The exp2
() and
exp2f
() functions compute the base 2 exponential of
the given argument x.
The expm1
() and
expm1f
() functions compute the value exp(x)-1
accurately even for tiny argument x.
exp
()
and expm1
() detect if the computed value will
overflow, set the global variable errno to
ERANGE
and cause a reserved operand fault on a VAX.
exp
() function conforms to ANSI
X3.159-1989 (“ANSI C89”). The
exp2
(), exp2f
(),
expf
(), expm1
(), and
expm1f
() functions conform to ISO/IEC
9899:1999 (“ISO C99”).
exp
() functions appeared in
Version 1 AT&T UNIX. The
expm1
() function appeared in
4.3BSD.
September 2, 2019 | NetBSD 9.0 |