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. .\" Portions Copyright (c) 2006, 2016, Oracle and/or its affiliates. All rights reserved. .\" 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 fdim 3M "27 Sept 2016" "Solaris 11.4" "Mathematical Library Functions" .SH NAME fdim, fdimf, fdiml \- compute positive difference between two floating-point numbers .SH SYNOPSIS .LP .nf c99 [ \fIflag\fR... ] \fIfile\fR... \fB-lm\fR [ \fIlibrary\fR... ] #include <math.h> \fBdouble\fR \fBfdim\fR(\fBdouble\fR \fIx\fR, \fBdouble\fR \fIy\fR); .fi .LP .nf \fBfloat\fR \fBfdimf\fR(\fBfloat\fR \fIx\fR, \fBfloat\fR \fIy\fR); .fi .LP .nf \fBlong double\fR \fBfdiml\fR(\fBlong double\fR \fIx\fR, \fBlong double\fR \fIy\fR); .fi .SH DESCRIPTION .sp .LP These functions determine the positive difference between their arguments. If \fIx\fR is greater than \fIy\fR, \fIx\fR\(mi\fIy\fR is returned. If \fIx\fR is less than or equal to \fIy\fR, +0 is returned. .SH RETURN VALUES .sp .LP Upon successful completion, these functions return the positive difference value. .sp .LP If \fIx\fR\(mi\fIy\fR is positive and overflows, a range error occurs and \fBfdim()\fR, \fBfdimf()\fR, and \fBfdiml()\fR returns the value of the macro \fBHUGE_VAL\fR, \fBHUGE_VALF\fR, and \fBHUGE_VALL\fR, respectively. .sp .LP If \fIx\fR or \fIy\fR is NaN, a NaN is returned. .SH ERRORS .sp .LP These functions will fail if: .sp .ne 2 .mk .na \fBRange Error\fR .ad .RS 15n .rt The result overflows. .sp If the integer expression (\fBmath_errhandling\fR & \fBMATH_ERREXCEPT\fR) is non-zero, the overflow floating-point exception will be 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. .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), \fBfmax\fR(3M), \fBfmin\fR(3M), \fBattributes\fR(7), \fBstandards\fR(7)