[unix-history] / usr / man / man3 / frexp.3

.TH FREXP 3 "19 January 1983"
.SH NAME
frexp, ldexp, modf \- split into mantissa and exponent
.SH SYNOPSIS
.nf
.B double frexp(value, eptr)
.B double value;
.B int *eptr;
.PP
.B double ldexp(value, exp)
.B double value;
.PP
.B double modf(value, iptr)
.B double value, *iptr;
.SH DESCRIPTION
.I Frexp
returns the mantissa of a double 
.I value
as a double quantity,
.I x,
of magnitude less than 1
and stores an integer 
.I n
such that
.I value
=
\fIx\fP\|\(**\|2\u\fIn\fP\d
indirectly through 
.I eptr.
.PP
.I Ldexp
returns the quantity
\fIvalue\|\(**\|2\u\fIexp\fP\d.
.PP
.I Modf
returns the positive fractional part of
.I value
and stores the integer part indirectly
through 
.I iptr.
Commit	Line	Data
05dda90f C	1	.TH FREXP 3 "19 January 1983"
	2	.SH NAME
	3	frexp, ldexp, modf \- split into mantissa and exponent
	4	.SH SYNOPSIS
	5	.nf
	6	.B double frexp(value, eptr)
	7	.B double value;
	8	.B int *eptr;
	9	.PP
	10	.B double ldexp(value, exp)
	11	.B double value;
	12	.PP
	13	.B double modf(value, iptr)
	14	.B double value, *iptr;
	15	.SH DESCRIPTION
	16	.I Frexp
	17	returns the mantissa of a double
	18	.I value
	19	as a double quantity,
	20	.I x,
	21	of magnitude less than 1
	22	and stores an integer
	23	.I n
	24	such that
	25	.I value
	26	=
	27	\fIx\fP\\|\(**\\|2\u\fIn\fP\d
	28	indirectly through
	29	.I eptr.
	30	.PP
	31	.I Ldexp
	32	returns the quantity
	33	\fIvalue\\|\(**\\|2\u\fIexp\fP\d.
	34	.PP
	35	.I Modf
	36	returns the positive fractional part of
	37	.I value
	38	and stores the integer part indirectly
	39	through
	40	.I iptr.