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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-24 04:52:22 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-24 04:52:22 +0000 |
commit | 3d08cd331c1adcf0d917392f7e527b3f00511748 (patch) | |
tree | 312f0d1e1632f48862f044b8bb87e602dcffb5f9 /man3/erf.3 | |
parent | Adding debian version 6.7-2. (diff) | |
download | manpages-3d08cd331c1adcf0d917392f7e527b3f00511748.tar.xz manpages-3d08cd331c1adcf0d917392f7e527b3f00511748.zip |
Merging upstream version 6.8.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'man3/erf.3')
-rw-r--r-- | man3/erf.3 | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/man3/erf.3 b/man3/erf.3 deleted file mode 100644 index 1e12bba..0000000 --- a/man3/erf.3 +++ /dev/null @@ -1,131 +0,0 @@ -'\" t -.\" Copyright 1993 David Metcalfe (david@prism.demon.co.uk) -.\" and Copyright 2008, Linux Foundation, written by Michael Kerrisk -.\" <mtk.manpages@gmail.com> -.\" -.\" 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 erf 3 2023-10-31 "Linux man-pages 6.7" -.SH NAME -erf, erff, erfl \- error function -.SH LIBRARY -Math library -.RI ( libm ", " \-lm ) -.SH SYNOPSIS -.nf -.B #include <math.h> -.P -.BI "double erf(double " x ); -.BI "float erff(float " x ); -.BI "long double erfl(long double " x ); -.P -.fi -.RS -4 -Feature Test Macro Requirements for glibc (see -.BR feature_test_macros (7)): -.RE -.P -.BR erf (): -.nf - _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE - || /* Since glibc 2.19: */ _DEFAULT_SOURCE - || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE -.fi -.P -.BR erff (), -.BR erfl (): -.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 return the error function of -.IR x , -defined as -.P -.in +4n -.EX -erf(x) = 2/sqrt(pi) * integral from 0 to x of exp(\-t*t) dt -.EE -.in -.SH RETURN VALUE -On success, these functions return the value of the error function of -.IR x , -a value in the range [\-1,\ 1]. -.P -If -.I x -is a NaN, a NaN is returned. -.P -If -.I x -is +0 (\-0), +0 (\-0) is returned. -.P -If -.I x -is positive infinity (negative infinity), -+1 (\-1) is returned. -.P -If -.I x -is subnormal, -a range error occurs, -and the return value is 2*x/sqrt(pi). -.SH ERRORS -See -.BR math_error (7) -for information on how to determine whether an error has occurred -when calling these functions. -.P -The following errors can occur: -.TP -Range error: result underflow (\fIx\fP is subnormal) -.\" .I errno -.\" is set to -.\" .BR ERANGE . -An underflow floating-point exception -.RB ( FE_UNDERFLOW ) -is raised. -.P -These functions do not set -.IR errno . -.\" It is intentional that these functions do not set errno for this case -.\" see https://www.sourceware.org/bugzilla/show_bug.cgi?id=6785 -.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 erf (), -.BR erff (), -.BR erfl () -T} Thread safety MT-Safe -.TE -.SH STANDARDS -C11, POSIX.1-2008. -.SH HISTORY -C99, POSIX.1-2001. -.P -The variant returning -.I double -also conforms to -SVr4, 4.3BSD. -.SH SEE ALSO -.BR cerf (3), -.BR erfc (3), -.BR exp (3) |