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diff --git a/man3/lgamma.3 b/man3/lgamma.3 deleted file mode 100644 index 87b8ec3ff..000000000 --- a/man3/lgamma.3 +++ /dev/null @@ -1,202 +0,0 @@ -.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de) -.\" and Copyright 2008, Linux Foundation, written by Michael Kerrisk -.\" <mtk.manpages@gmail.com> -.\" -.\" SPDX-License-Identifier: GPL-1.0-or-later -.\" -.\" based on glibc infopages -.\" -.TH lgamma 3 (date) "Linux man-pages (unreleased)" -.SH NAME -lgamma, lgammaf, lgammal, lgamma_r, lgammaf_r, lgammal_r, signgam \- -log gamma function -.SH LIBRARY -Math library -.RI ( libm ", " \-lm ) -.SH SYNOPSIS -.nf -.B #include <math.h> -.P -.BI "double lgamma(double " x ); -.BI "float lgammaf(float " x ); -.BI "long double lgammal(long double " x ); -.P -.BI "double lgamma_r(double " x ", int *" signp ); -.BI "float lgammaf_r(float " x ", int *" signp ); -.BI "long double lgammal_r(long double " x ", int *" signp ); -.P -.BI "extern int " signgam ; -.fi -.P -.RS -4 -Feature Test Macro Requirements for glibc (see -.BR feature_test_macros (7)): -.RE -.P -.nf -.BR lgamma (): - _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE - || /* Since glibc 2.19: */ _DEFAULT_SOURCE - || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE -.fi -.P -.BR lgammaf (), -.BR lgammal (): -.nf - _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L - || /* Since glibc 2.19: */ _DEFAULT_SOURCE - || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE -.fi -.P -.BR lgamma_r (), -.BR lgammaf_r (), -.BR lgammal_r (): -.nf - /* Since glibc 2.19: */ _DEFAULT_SOURCE - || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE -.fi -.P -.IR signgam : -.nf - _XOPEN_SOURCE - || /* Since glibc 2.19: */ _DEFAULT_SOURCE - || /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE -.fi -.SH DESCRIPTION -For the definition of the Gamma function, see -.BR tgamma (3). -.P -The -.BR lgamma (), -.BR lgammaf (), -and -.BR lgammal () -functions return the natural logarithm of -the absolute value of the Gamma function. -The sign of the Gamma function is returned in the -external integer -.I signgam -declared in -.IR <math.h> . -It is 1 when the Gamma function is positive or zero, \-1 -when it is negative. -.P -Since using a constant location -.I signgam -is not thread-safe, the functions -.BR lgamma_r (), -.BR lgammaf_r (), -and -.BR lgammal_r () -have been introduced; they return the sign via the argument -.IR signp . -.SH RETURN VALUE -On success, these functions return the natural logarithm of Gamma(x). -.P -If -.I x -is a NaN, a NaN is returned. -.P -If -.I x -is 1 or 2, +0 is returned. -.P -If -.I x -is positive infinity or negative infinity, -positive infinity is returned. -.P -If -.I x -is a nonpositive integer, -a pole error occurs, -and the functions return -.RB + HUGE_VAL , -.RB + HUGE_VALF , -or -.RB + HUGE_VALL , -respectively. -.P -If the result overflows, -a range error occurs, -.\" e.g., lgamma(DBL_MAX) -and the functions return -.BR HUGE_VAL , -.BR HUGE_VALF , -or -.BR HUGE_VALL , -respectively, with the correct mathematical sign. -.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 -Pole error: \fIx\fP is a nonpositive integer -.I errno -is set to -.B ERANGE -(but see BUGS). -A divide-by-zero floating-point exception -.RB ( FE_DIVBYZERO ) -is raised. -.TP -Range error: result overflow -.I errno -is set to -.BR ERANGE . -An overflow floating-point exception -.RB ( FE_OVERFLOW ) -is raised. -.\" glibc (as at 2.8) also supports an inexact -.\" exception for various cases. -.SH STANDARDS -.TP -.BR lgamma () -.TQ -.BR lgammaf () -.TQ -.BR lgammal () -C11, POSIX.1-2008. -.TP -.I signgam -POSIX.1-2008. -.TP -.BR lgamma_r () -.TQ -.BR lgammaf_r () -.TQ -.BR lgammal_r () -None. -.SH HISTORY -.TP -.BR lgamma () -.TQ -.BR lgammaf () -.TQ -.BR lgammal () -C99, POSIX.1-2001. -.TP -.I signgam -POSIX.1-2001. -.TP -.BR lgamma_r () -.TQ -.BR lgammaf_r () -.TQ -.BR lgammal_r () -None. -.SH BUGS -In glibc 2.9 and earlier, -.\" https://www.sourceware.org/bugzilla/show_bug.cgi?id=6777 -when a pole error occurs, -.I errno -is set to -.BR EDOM ; -instead of the POSIX-mandated -.BR ERANGE . -Since glibc 2.10, glibc does the right thing. -.SH SEE ALSO -.BR tgamma (3) |