stdsinf

stdsinf is not a standard name defined by the C or C++ standards. In common usage, people may refer to the single-precision sine function as sinf in C, or as std::sinf in C++ after including the <cmath> header. The correct identifiers depend on the language and header used.

In C, the function is sinf and is declared in <math.h>. It computes the sine of its argument, which is a value in radians, and returns a float. It is the single-precision counterpart to the double-precision sin function (sin) and is typically linked with the math library (for example, with the -lm flag on many systems).

In C++, the standard library provides trig functions in the std namespace when using <cmath>. The primary overloads are named sin, with variants for float, double, and long double, exposed as std::sin(float), std::sin(double), and std::sin(long double). Some implementations also provide a separate single-precision variant named sinf within the std namespace or in the global namespace for compatibility, so users may encounter std::sinf or sinf depending on compiler and headers. The effect is the same: computing the sine of a float input in radians and returning a float.

Usage notes: include the appropriate header (<math.h> for C; <cmath> for C++) and consider linking with the math library if required. As with other single-precision math functions, stdsinf/sinf aims for single-precision accuracy and performance suited to float computations.

See also: sin, sinf, std::sin, <cmath>, <math.h>.