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Difference between revisions of "cpp/numeric/math/fpclassify"

From cppreference.com
< cpp‎ | numeric‎ | math
m (r2.7.3) (Robot: Adding de, es, fr, it, ja, pt, ru, zh)
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{{cpp/title|fpclassify}}
 
{{cpp/title|fpclassify}}
 
{{cpp/numeric/math/navbar}}
 
{{cpp/numeric/math/navbar}}
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{{ddcl list begin}}
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{{dcl begin}}
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{{ddcl list header | cmath}}
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{{dcl header | cmath}}
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{{ddcl list item | notes={{mark since c++11}} |
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{{dcl | notes={{mark since c++11}} |
 
int fpclassify( float arg );
 
int fpclassify( float arg );
 
}}
 
}}
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{{ddcl list item | notes={{mark since c++11}} |
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{{dcl | notes={{mark since c++11}} |
 
int fpclassify( double arg );
 
int fpclassify( double arg );
 
}}
 
}}
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{{ddcl list item | notes={{mark since c++11}} |
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{{dcl | notes={{mark since c++11}} |
 
int fpclassify( long double arg );
 
int fpclassify( long double arg );
 
}}
 
}}
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{{ddcl list end}}
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{{dcl end}}
  
 
Categorizes floating point value {{tt|arg}} into the following categories: zero, subnormal, normal, infinite, NAN, or implementation-defined category.  
 
Categorizes floating point value {{tt|arg}} into the following categories: zero, subnormal, normal, infinite, NAN, or implementation-defined category.  
  
 
===Parameters===
 
===Parameters===
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{{param list begin}}
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{{par begin}}
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{{param list item | arg | floating point value}}
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{{par | arg | floating point value}}
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{{param list end}}
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{{par end}}
  
 
===Return value===
 
===Return value===
  
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one of {{c|FP_INFINITE}}, {{c|FP_NAN}}, {{c|FP_NORMAL}}, {{c|FP_SUBNORMAL}}, {{c|FP_ZERO}} or implementation-defined type, specifying the category of {{tt|arg}}.
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one of {{lc|FP_INFINITE}}, {{lc|FP_NAN}}, {{lc|FP_NORMAL}}, {{lc|FP_SUBNORMAL}}, {{lc|FP_ZERO}} or implementation-defined type, specifying the category of {{tt|arg}}.
  
 
===See also===
 
===See also===
  
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{{dsc begin}}
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{{dcl list template | cpp/numeric/math/dcl list isfinite}}
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{{dsc inc | cpp/numeric/math/dcl list isfinite}}
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{{dcl list template | cpp/numeric/math/dcl list isinf}}
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{{dsc inc | cpp/numeric/math/dcl list isinf}}
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{{dcl list template | cpp/numeric/math/dcl list isnan}}
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{{dsc inc | cpp/numeric/math/dcl list isnan}}
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{{dcl list template | cpp/numeric/math/dcl list isnormal}}
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{{dsc inc | cpp/numeric/math/dcl list isnormal}}
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{{dcl list template | cpp/types/dcl list numeric_limits}}
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{{dsc inc | cpp/types/dcl list numeric_limits}}
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{{dcl list end}}
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{{dsc end}}
  
 
[[de:cpp/numeric/math/fpclassify]]
 
[[de:cpp/numeric/math/fpclassify]]

Revision as of 19:20, 31 May 2013

 
C++
 
Numerics library
Common mathematical functions
Mathematical special functions (C++17)
Mathematical constants (C++20)
Basic linear algebra algorithms (C++26)
Floating-point environment (C++11)
Complex numbers
Numeric array (valarray)
Pseudo-random number generation
Factor operations
(C++17)
(C++17)
Interpolations
(C++20)
(C++20)
Saturation arithmetic
(C++26)
(C++26)
(C++26)
(C++26)
(C++26)

Generic numeric operations
Bit operations
(C++20)    
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++20)
(C++23)
(C++20)
 
Common mathematical functions
Functions
Basic operations
(C++11)  
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)(C++11)(C++11)
Exponential functions
(C++11)
(C++11)

(C++11)
(C++11)
Power functions
(C++11)
(C++11)
Trigonometric and
hyperbolic functions
(C++11)
(C++11)
(C++11)

Error and gamma functions
(C++11)
(C++11)
(C++11)
(C++11)
Nearest integer floating point operations
(C++11)(C++11)(C++11)
(C++11)
(C++11)
(C++11)(C++11)(C++11)
Floating point manipulation functions
(C++11)(C++11)
(C++11)
(C++11)
(C++11)(C++11)
(C++11)
Classification and comparison
fpclassify
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
(C++11)
Types
(C++11)
(C++11)
(C++11)
Macro constants
 
Defined in header <cmath>
int fpclassify( float arg );
 (since C++11)
int fpclassify( double arg );
 (since C++11)
int fpclassify( long double arg );
 (since C++11)

Categorizes floating point value arg into the following categories: zero, subnormal, normal, infinite, NAN, or implementation-defined category.

Parameters

arg - floating point value

Return value

one of FP_INFINITE, FP_NAN, FP_NORMAL, FP_SUBNORMAL, FP_ZERO or implementation-defined type, specifying the category of arg.

See also

Template:cpp/numeric/math/dcl list isfiniteTemplate:cpp/numeric/math/dcl list isinfTemplate:cpp/numeric/math/dcl list isnanTemplate:cpp/numeric/math/dcl list isnormal
 provides an interface to query properties of all fundamental numeric types
(class template) [edit]
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