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fmodf(3m) [opensolaris man page]

fmod(3M)						  Mathematical Library Functions						  fmod(3M)

NAME
fmod, fmodf, fmodl - floating-point remainder value function SYNOPSIS
c99 [ flag... ] file... -lm [ library... ] #include <math.h> double fmod(double x, double y); float fmodf(float x, float y); long double fmodl(long double x, long double y); DESCRIPTION
These functions return the floating-point remainder of the division of x by y. RETURN VALUES
These functions return the value x - i * y, for some integer i such that, if y is non-zero, the result has the same sign as x and magnitude less than the magnitude of y. If x or y is NaN, a NaN is returned. If y is 0, a domain error occurs and a NaN is returned. If x is infinite, a domain error occurs and a NaN is returned. If x is +-0 and y is not 0, +-0 is returned. If x is not infinite and y is +-Inf, x is returned. ERRORS
These functions will fail if: Domain Error The x argument is infinite or y is 0. If the integer expression (math_errhandling & MATH_ERREXCEPT) is non-zero, the invalid 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), isnan(3M), math.h(3HEAD), attributes(5), standards(5) SunOS 5.11 12 Jul 2006 fmod(3M)

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fma(3M) 						  Mathematical Library Functions						   fma(3M)

NAME
fma, fmaf, fmal - floating-point multiply-add SYNOPSIS
c99 [ flag... ] file... -lm [ library... ] #include <math.h> double fma(double x, double y, double z); float fmaf(float x, float y, float z); long double fmal(long double x, long double y, long double z); DESCRIPTION
These functions compute (x * y) + z, rounded as one ternary operation. They compute the value (as if) to infinite precision and round once to the result format, according to the rounding mode characterized by the value of FLT_ROUNDS. RETURN VALUES
Upon successful completion, these functions return (x * y) + z, rounded as one ternary operation. If x or y are NaN, a NaN is returned. If x multiplied by y is an exact infinity and z is also an infinity but with the opposite sign, a domain error occurs and a NaN is returned. If one of x and y is infinite, the other is 0, and z is not a NaN, a domain error occurs and a NaN is returned. If x*y is not 0*Inf nor Inf*0 and z is a NaN, a NaN is returned. ERRORS
These functions will fail if: Domain Error The value of x*y+z is invalid or the value x*y is invalid. If the integer expression (math_errhandling & MATH_ERREXCEPT) is non-zero, the invalid floating-point exception will be raised. Range Error The result overflows. If the integer expression (math_errhandling & MATH_ERREXCEPT) is non-zero, the overflow floating-point exception will be 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), math.h(3HEAD), attributes(5), standards(5) SunOS 5.11 12 Jul 2006 fma(3M)
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