diff options
Diffstat (limited to 'man3/strtod.3')
| -rw-r--r-- | man3/strtod.3 | 27 |
1 files changed, 13 insertions, 14 deletions
diff --git a/man3/strtod.3 b/man3/strtod.3 index 23e7578..5c650b1 100644 --- a/man3/strtod.3 +++ b/man3/strtod.3 @@ -15,7 +15,7 @@ .\" (michael@cantor.informatik.rwth-aachen.de) .\" Added strof, strtold, aeb, 2001-06-07 .\" -.TH strtod 3 2023-07-20 "Linux man-pages 6.05.01" +.TH strtod 3 2023-10-31 "Linux man-pages 6.7" .SH NAME strtod, strtof, strtold \- convert ASCII string to floating-point number .SH LIBRARY @@ -24,18 +24,18 @@ Standard C library .SH SYNOPSIS .nf .B #include <stdlib.h> -.PP +.P .BI "double strtod(const char *restrict " nptr ", char **restrict " endptr ); .BI "float strtof(const char *restrict " nptr ", char **restrict " endptr ); .BI "long double strtold(const char *restrict " nptr \ ", char **restrict " endptr ); .fi -.PP +.P .RS -4 Feature Test Macro Requirements for glibc (see .BR feature_test_macros (7)): .RE -.PP +.P .BR strtof (), .BR strtold (): .nf @@ -55,14 +55,14 @@ to and .I long double representation, respectively. -.PP +.P The expected form of the (initial portion of the) string is optional leading white space as recognized by .BR isspace (3), an optional plus (\[aq]+\[aq]) or minus sign (\[aq]\-\[aq]) and then either (i) a decimal number, or (ii) a hexadecimal number, or (iii) an infinity, or (iv) a NAN (not-a-number). -.PP +.P A .I "decimal number" consists of a nonempty sequence of decimal digits @@ -71,7 +71,7 @@ usually \[aq].\[aq]), optionally followed by a decimal exponent. A decimal exponent consists of an \[aq]E\[aq] or \[aq]e\[aq], followed by an optional plus or minus sign, followed by a nonempty sequence of decimal digits, and indicates multiplication by a power of 10. -.PP +.P A .I "hexadecimal number" consists of a "0x" or "0X" followed by a nonempty sequence of @@ -82,11 +82,11 @@ consists of a \[aq]P\[aq] or \[aq]p\[aq], followed by an optional plus or minus sign, followed by a nonempty sequence of decimal digits, and indicates multiplication by a power of 2. At least one of radix character and binary exponent must be present. -.PP +.P An .I infinity is either "INF" or "INFINITY", disregarding case. -.PP +.P A .I NAN is "NAN" (disregarding case) optionally followed by a string, @@ -97,21 +97,21 @@ specifies in an implementation-dependent way the type of NAN (see NOTES). .SH RETURN VALUE These functions return the converted value, if any. -.PP +.P If .I endptr is not NULL, a pointer to the character after the last character used in the conversion is stored in the location referenced by .IR endptr . -.PP +.P If no conversion is performed, zero is returned and (unless .I endptr is null) the value of .I nptr is stored in the location referenced by .IR endptr . -.PP +.P If the correct value would cause overflow, plus or minus .BR HUGE_VAL , .BR HUGE_VALF , @@ -122,7 +122,7 @@ and .B ERANGE is stored in .IR errno . -.PP +.P If the correct value would cause underflow, a value with magnitude no larger than .BR DBL_MIN , @@ -153,7 +153,6 @@ T{ .BR strtold () T} Thread safety MT-Safe locale .TE -.sp 1 .SH VERSIONS In the glibc implementation, the .I n-char-sequence |