From 399644e47874bff147afb19c89228901ac39340e Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 15 Apr 2024 21:40:15 +0200 Subject: Adding upstream version 6.05.01. Signed-off-by: Daniel Baumann --- man3/modf.3 | 95 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 95 insertions(+) create mode 100644 man3/modf.3 (limited to 'man3/modf.3') diff --git a/man3/modf.3 b/man3/modf.3 new file mode 100644 index 0000000..118d213 --- /dev/null +++ b/man3/modf.3 @@ -0,0 +1,95 @@ +'\" t +.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) +.\" +.\" SPDX-License-Identifier: Linux-man-pages-copyleft +.\" +.\" References consulted: +.\" Linux libc source code +.\" Lewine's _POSIX Programmer's Guide_ (O'Reilly & Associates, 1991) +.\" 386BSD man pages +.\" Modified 1993-07-24 by Rik Faith (faith@cs.unc.edu) +.\" Modified 2002-07-27 by Walter Harms +.\" (walter.harms@informatik.uni-oldenburg.de) +.\" +.TH modf 3 2023-07-20 "Linux man-pages 6.05.01" +.SH NAME +modf, modff, modfl \- extract signed integral and fractional values from +floating-point number +.SH LIBRARY +Math library +.RI ( libm ", " \-lm ) +.SH SYNOPSIS +.nf +.B #include +.PP +.BI "double modf(double " x ", double *" iptr ); +.BI "float modff(float " x ", float *" iptr ); +.BI "long double modfl(long double " x ", long double *" iptr ); +.fi +.PP +.RS -4 +Feature Test Macro Requirements for glibc (see +.BR feature_test_macros (7)): +.RE +.PP +.BR modff (), +.BR modfl (): +.nf + _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L + || /* Since glibc 2.19: */ _DEFAULT_SOURCE + || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE +.fi +.SH DESCRIPTION +These functions break the argument +.I x +into an integral +part and a fractional part, each of which has the same sign as +.IR x . +The integral part is stored in the location pointed to by +.IR iptr . +.SH RETURN VALUE +These functions return the fractional part of +.IR x . +.PP +If +.I x +is a NaN, a NaN is returned, and +.I *iptr +is set to a NaN. +.PP +If +.I x +is positive infinity (negative infinity), +0 (\-0) is returned, and +.I *iptr +is set to positive infinity (negative infinity). +.SH ERRORS +No errors occur. +.SH ATTRIBUTES +For an explanation of the terms used in this section, see +.BR attributes (7). +.TS +allbox; +lbx lb lb +l l l. +Interface Attribute Value +T{ +.na +.nh +.BR modf (), +.BR modff (), +.BR modfl () +T} Thread safety MT-Safe +.TE +.sp 1 +.SH STANDARDS +C11, POSIX.1-2008. +.SH HISTORY +C99, POSIX.1-2001. +.PP +The variant returning +.I double +also conforms to +SVr4, 4.3BSD, C89. +.SH SEE ALSO +.BR frexp (3), +.BR ldexp (3) -- cgit v1.2.3