Linux and UNIX Man Pages

Test Your Knowledge in Computers #546
Difficulty: Medium
In computer science, an operator takes the values of its operands and combines them in some way to produce a new value.
True or False?
Linux & Unix Commands - Search Man Pages

tgammaf(3m) [opensolaris man page]

tgamma(3M)						  Mathematical Library Functions						tgamma(3M)

NAME
tgamma, tgammaf, tgammal - compute gamma function SYNOPSIS
c99 [ flag... ] file... -lm [ library... ] #include <math.h> double tgamma(double x); float tgammaf(float x); long double tgammal(long double x); DESCRIPTION
These functions compute the gamma() function of x. RETURN VALUES
Upon successful completion, these functions return gamma(x). If x is a negative integer, a domain error occurs and a NaN is returned. If the correct value would cause overflow, a range error occurs and tgamma(), tgammaf(), and tgammal() return the value of the macro +-HUGE_VAL, +-HUGE_VALF, or +-HUGE_VALL, respectively. If x is NaN, a NaN is returned. If x is +-Inf, x is returned. If x is +-0, a pole error occurs and tgamma(), tgammaf(), and tgammal() return +-HUGE_VAL, +-HUGE_VALF, and +-HUGE_VALL, respectively. If x is +Inf, a domain error occurs and a NaN is returned. ERRORS
These functions will fail if: Domain Error The value of x is a negative integer or x is -Inf. If the integer expression (math_errhandling & MATH_ERREXCEPT) is non-zero, then the invalid floating-point exception is raised. Pole Error The value of x is zero. If the integer expression (math_errhandling & MATH_ERREXCEPT) is non-zero, then the divide-by-zero floating-point exception is raised. Range Error The value overflows. If the integer expression (math_errhandling & MATH_ERREXCEPT) is non-zero, then the overflow floating-point exception is raised. USAGE
An application wanting to check for exceptions should call feclearexcept(FE_ALL_EXCEPT) before calling these functions. On return, if fetestexcept(FE_INVALID | FE_DIVBYZERO | FE_OVERFLOW | FE_UNDERFLOW) is non-zero, an exception has been raised. An application should either examine the return value or check the floating point exception flags to detect exceptions. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ SEE ALSO
feclearexcept(3M), fetestexcept(3M), lgamma(3M), math.h(3HEAD), attributes(5), standards(5) SunOS 5.11 12 Jul 2006 tgamma(3M)

Featured Tech Videos