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diff --git a/man3/expm1.3 b/man3/expm1.3 new file mode 100644 index 000000000..75aef678f --- /dev/null +++ b/man3/expm1.3 @@ -0,0 +1,53 @@ +.\" Copyright 1995 Jim Van Zandt <jrv@vanzandt.mv.com> +.\" +.\" Permission is granted to make and distribute verbatim copies of this +.\" manual provided the copyright notice and this permission notice are +.\" preserved on all copies. +.\" +.\" Permission is granted to copy and distribute modified versions of this +.\" manual under the conditions for verbatim copying, provided that the +.\" entire resulting derived work is distributed under the terms of a +.\" permission notice identical to this one. +.\" +.\" Since the Linux kernel and libraries are constantly changing, this +.\" manual page may be incorrect or out-of-date. The author(s) assume no +.\" responsibility for errors or omissions, or for damages resulting from +.\" the use of the information contained herein. The author(s) may not +.\" have taken the same level of care in the production of this manual, +.\" which is licensed free of charge, as they might when working +.\" professionally. +.\" +.\" Formatted or processed versions of this manual, if unaccompanied by +.\" the source, must acknowledge the copyright and authors of this work. +.\" +.\" Modified 2002-07-27 Walter Harms +.\" (walter.harms@informatik.uni-oldenburg.de) +.\" +.TH EXPM1 3 2002-07-27 "" "Linux Programmer's Manual" +.SH NAME +expm1, expm1f, expm1l \- exponential minus 1 +.SH SYNOPSIS +.nf +.B #include <math.h> +.sp +.BI "double expm1(double " x ); +.sp +.BI "float expm1f(float " x ); +.sp +.BI "long double expm1l(long double " x ); +.sp +.fi +Link with \-lm. +.SH DESCRIPTION +.BI expm1( x ) +returns a value equivalent to `exp (\fIx\fP) - 1'. It is +computed in a way that is accurate even if the value of \fIx\fP is near +zero--a case where `exp (\fIx\fP) - 1' would be inaccurate due to +subtraction of two numbers that are nearly equal. +.SH "CONFORMING TO" +BSD, C99. +The float and the long double variants are C99 requirements. +.SH "SEE ALSO" +.BR exp (3), +.BR log (3), +.BR log1p (3) |