EXP10 3CW "09 March 2006" "mathcw-1.00"

Table of contents


NAME

exp10f, exp10, exp10l, exp10w, exp10q, exp10ll, exp10df, exp10d, exp10dl, exp10dll - exponential base-10 function

SYNOPSIS

cc [ flags ] -I/usr/local/include file(s) -L/usr/local/lib -lmcw [ ... ]

#include <mathcw.h>

extern float exp10f (float x);

extern double exp10 (double x);

extern long double exp10l (long double x);

extern __float80 exp10w (__float80 x);

extern __float128 exp10q (__float128 x);

extern long_long_double exp10ll (long_long_double x);

extern decimal_float exp10df (decimal_float x);

extern decimal_double exp10d (decimal_double x);

extern decimal_long_double exp10dl (decimal_long_double x);

extern decimal_long_long_double exp10dll (decimal_long_long_double x);

NB: Functions with prototypes containing underscores in type names may be available only with certain extended compilers.


DESCRIPTION

Compute the base-10 exponential of x, that is, 10 to the power x.

This function may be more accurate than the mathematically-equivalent expression using the power function, such as pow(10.0, x).

Caution: Because the function grows rapidly for arguments of large magnitude, it approaches Infinity fairly quickly. Also, for arguments of small magnitude, exp10(x) - 1 suffers loss of leading significant digits; use the accurate exp10m1(x) function instead.


RETURN VALUES

Return the base-10 exponential of the argument, or a NaN if the argument is a NaN.

ERRORS

If the argument is a NaN, return the argument, and set errno to EDOM. If the argument is large enough that the function value is too large to represent (i.e., it overflows), return Infinity, and set errno to ERANGE.

SEE ALSO

exp(3CW), expm1(3CW), exp2(3CW), exp2m1(3CW), exp8(3CW), exp8m1(3CW), exp10m1(3CW), exp16(3CW), exp16m1(3CW), log(3CW), log1p(3CW), log2(3CW), log21p(3CW), log8(3CW), log81p(3CW), log10(3CW), log101p(3CW), log16(3CW), log161p(3CW).