.if t .ds s \d*\u .if n .ds s * .TH FREXP 3 .SH NAME frexp, ldexp, modf \- split into mantissa and exponent .SH SYNOPSIS .B double frexp(value, eptr) .br .B double value; .br .B int *eptr; .PP .B double ldexp(value, exp) .br .B double value; .PP .B double modf(value, iptr) .br .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.