diff options
Diffstat (limited to 'man3/erfc.3')
| -rw-r--r-- | man3/erfc.3 | 29 |
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 |