.SH SYNOPSIS
.nf
.B #include <math.h>
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.BI "double trunc(double " x );
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.BI "float truncf(float " x );
.br
.BI "long double truncl(long double " x );
.fi
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Link with \fI\-lm\fP.
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.in -4n
Feature Test Macro Requirements for glibc (see
.BR feature_test_macros (7)):
.in
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.ad l
.BR trunc (),
.BR truncf (),