[Syntax]
double ldexp(double x)
float ldexpf(float x)
long double ldexpl(long double x) [V2.01.00 or later]
[Description]
These functions multiply a floating-point number by an integral power of 2.
[Special case]
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Overflow occurred
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±HUGE_VAL
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ERANGE
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Underflow occurred
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Denormal number
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ERANGE
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