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-rw-r--r--man3/erfc.329
1 files changed, 14 insertions, 15 deletions
diff --git a/man3/erfc.3 b/man3/erfc.3
index 92d6293..658e1bb 100644
--- a/man3/erfc.3
+++ b/man3/erfc.3
@@ -4,7 +4,7 @@
.\"
.\" SPDX-License-Identifier: Linux-man-pages-copyleft
.\"
-.TH erfc 3 2023-07-20 "Linux man-pages 6.05.01"
+.TH erfc 3 2023-10-31 "Linux man-pages 6.7"
.SH NAME
erfc, erfcf, erfcl \- complementary error function
.SH LIBRARY
@@ -13,24 +13,24 @@ Math library
.SH SYNOPSIS
.nf
.B #include <math.h>
-.PP
+.P
.BI "double erfc(double " x );
.BI "float erfcf(float " x );
.BI "long double erfcl(long double " x );
.fi
-.PP
+.P
.RS -4
Feature Test Macro Requirements for glibc (see
.BR feature_test_macros (7)):
.RE
-.PP
+.P
.BR erfc ():
.nf
_ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE
|| /* Since glibc 2.19: */ _DEFAULT_SOURCE
|| /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
.fi
-.PP
+.P
.BR erfcf (),
.BR erfcl ():
.nf
@@ -46,28 +46,28 @@ that is, 1.0 \- erf(x).
On success, these functions return the complementary error function of
.IR x ,
a value in the range [0,2].
-.PP
+.P
If
.I x
is a NaN, a NaN is returned.
-.PP
+.P
If
.I x
is +0 or \-0, 1 is returned.
-.PP
+.P
If
.I x
is positive infinity,
+0 is returned.
-.PP
+.P
If
.I x
is negative infinity,
+2 is returned.
-.PP
+.P
If the function result underflows and produces an unrepresentable value,
the return value is 0.0.
-.PP
+.P
If the function result underflows but produces a representable
(i.e., subnormal) value,
.\" e.g., erfc(27) on x86-32
@@ -78,7 +78,7 @@ See
.BR math_error (7)
for information on how to determine whether an error has occurred
when calling these functions.
-.PP
+.P
The following errors can occur:
.TP
Range error: result underflow (result is subnormal)
@@ -88,7 +88,7 @@ Range error: result underflow (result is subnormal)
An underflow floating-point exception
.RB ( FE_UNDERFLOW )
is raised.
-.PP
+.P
These functions do not set
.IR errno .
.\" It is intentional that these functions do not set errno for this case
@@ -109,12 +109,11 @@ T{
.BR erfcl ()
T} Thread safety MT-Safe
.TE
-.sp 1
.SH STANDARDS
C11, POSIX.1-2008.
.SH HISTORY
C99, POSIX.1-2001.
-.PP
+.P
The variant returning
.I double
also conforms to