Hallo, dies ist ein Test.

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'\" te .\" Copyright (c) 2001, the Institute of Electrical and Electronics Engineers, Inc. and The Open Group. All Rights Reserved. .\" Copyright (c) 1992, X/Open Company Limited. All Rights Reserved. .\" Portions Copyright (c) 2006, 2016, Oracle and/or its affiliates. All rights reserved. .\" Oracle gratefully acknowledges The Open Group for permission to reproduce portions of its copyrighted documentation. Original documentation from The Open Group can be obtained online at http://www.opengroup.org/bookstore/. .\" The Institute of Electrical and Electronics Engineers and The Open Group, have given us permission to reprint portions of their documentation. In the following statement, the phrase "this text" refers to portions of the system documentation. Portions of this text are reprinted and reproduced in electronic form in the Sun OS Reference Manual, from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between these versions and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html. This notice shall appear on any product containing this material. .TH log10 3M "27 Sept 2016" "Solaris 11.4" "Mathematical Library Functions" .SH NAME log10, log10f, log10l \- base 10 logarithm function .SH SYNOPSIS .LP .nf c99 [ \fIflag\fR... ] \fIfile\fR... \fB-lm\fR [ \fIlibrary\fR... ] #include <math.h> \fBdouble\fR \fBlog10\fR(\fBdouble\fR \fIx\fR); .fi .LP .nf \fBfloat\fR \fBlog10f\fR(\fBfloat\fR \fIx\fR); .fi .LP .nf \fBlong double\fR \fBlog10l\fR(\fBlong double\fR \fIx\fR); .fi .SH DESCRIPTION .sp .LP These functions compute the base 10 logarithm of \fIx\fR, log(10)(\fIx\fR). .SH RETURN VALUES .sp .LP Upon successful completion, \fBlog10()\fR returns the base 10 logarithm of \fIx\fR. .sp .LP If \fIx\fR is \(+-0, a pole error occurs and \fBlog10()\fR, \fBlog10f()\fR, and \fBlog10l()\fR return \(mi\fBHUGE_VAL\fR, \(mi\fBHUGE_VALF\fR, and \(mi\fBHUGE_VALL\fR, respectively. .sp .LP For finite values of \fIx\fR that are less than 0, or if \fIx\fR is \(miInf, a domain error occurs and a NaN is returned. .sp .LP If \fIx\fR is NaN, a NaN is returned. .sp .LP If \fIx\fR is 1, +0 is returned. .sp .LP If \fIx\fR is +Inf, \fIx\fR is returned. .sp .LP For exceptional cases, \fBmatherr\fR(3M) tabulates the values to be returned by \fBlog10()\fR as specified by SVID3 and XPG3. .SH ERRORS .sp .LP These functions will fail if: .sp .ne 2 .mk .na \fBDomain Error\fR .ad .RS 16n .rt The finite value of \fIx\fR is negative, or \fIx\fR is -Inf. .sp If the integer expression (\fBmath_errhandling\fR & \fBMATH_ERREXCEPT\fR) is non-zero, the invalid floating-point exception is raised. .sp The \fBlog10()\fR function sets \fBerrno\fR to \fBEDOM\fR if the value of \fIx\fR is negative. .RE .sp .ne 2 .mk .na \fBPole Error\fR .ad .RS 16n .rt The value of \fIx\fR is 0. .sp If the integer expression (\fBmath_errhandling\fR & \fBMATH_ERREXCEPT\fR) is non-zero, the divide-by-zero floating-point exception is raised. .RE .SH USAGE .sp .LP An application wanting to check for exceptions should call \fBfeclearexcept\fR(\fBFE_ALL_EXCEPT\fR) before calling these functions. On return, if \fBfetestexcept\fR(\fBFE_INVALID\fR | \fBFE_DIVBYZERO\fR | \fBFE_OVERFLOW\fR | \fBFE_UNDERFLOW\fR) is non-zero, an exception has been raised. An application should either examine the return value or check the floating point exception flags to detect exceptions. .sp .LP An application can also set \fBerrno\fR to 0 before calling \fBlog10()\fR. On return, if \fBerrno\fR is non-zero, an error has occurred. The \fBlog10f()\fR and \fBlog10l()\fR functions do not set \fBerrno\fR. .SH ATTRIBUTES .sp .LP See \fBattributes\fR(7) for descriptions of the following attributes: .sp .TS tab( ) box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) . ATTRIBUTE TYPE ATTRIBUTE VALUE _ Interface Stability Committed _ Availability system/library/math _ MT-Level MT-Safe _ Standard See \fBstandards\fR(7). .TE .sp .SH SEE ALSO .sp .LP \fBmath.h\fR(3HEAD), \fBfeclearexcept\fR(3M), \fBfetestexcept\fR(3M), \fBisnan\fR(3M), \fBlog\fR(3M), \fBmatherr\fR(3M), \fBpow\fR(3M), \fBattributes\fR(7), \fBstandards\fR(7)