scalbn, scalbln
From cppreference.com
| Defined in header
<cmath>
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| float scalbnf( float x, int exp );
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(since C99) | |
| double scalbn( double x, int exp );
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(since C99) | |
| long double scalbnl( long double x, int exp );
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(since C99) | |
| float scalblnf( float x, long exp );
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(since C99) | |
| double scalbln( double x, long exp );
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(since C99) | |
| long double scalblnl( long double x, long exp );
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(since C99) | |
Multiplies an floating point value x by FLT_RADIX raised to power exp. On binary system it is equivalent to ldexp().
[edit] Parameters
| arg | - | floating point value |
| exp | - | integer value |
[edit] Return value
Returns x×FLT_RADIXexp.
If the result is too large for the underlying type, range error occurs and HUGE_VAL is returned.
[edit] See also
| decomposes a number into significand and a power of 2 (function) |
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| multiplies a number by 2 raised to a power (function) |
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C++ documentation for scalbn
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