3 frexp, ldexp, modf \- split into mantissa and exponent
10 double frexp(double value, int *eptr)
13 double ldexp(double value, int exp)
16 double modf(double value, double *iptr)
19 returns the mantissa of
21 and stores the exponent indirectly through
26 .if t .IR frexp ( value )×2\u\s-2 (*eptr) \s0\d
27 .if n .IR frexp ( value )*2** (*eptr).
31 .if t .IR value ×2\u\s-2 exp \s0\d.
32 .if n .IR value *2** exp.
35 returns the signed fractional part of
37 and stores the integer part indirectly
41 .B /sys/src/libc/port/frexp.c
46 returns 0 for underflow and the appropriately signed infinity