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man pages section 3: Extended Library Functions Oracle Solaris 10 1/13 Information Library |
Extended Library Functions - Part 1
Extended Library Functions - Part 2
Extended Library Functions - Part 3
gl_customize_completion(3TECLA)
HBA_GetAdapterAttributes(3HBAAPI)
HBA_GetAdapterPortAttributes(3HBAAPI)
HBA_GetBindingCapability(3HBAAPI)
HBA_GetBindingSupport(3HBAAPI)
HBA_GetDiscoveredPortAttributes(3HBAAPI)
HBA_GetFcpPersistentBinding(3HBAAPI)
HBA_GetFcpTargetMapping(3HBAAPI)
HBA_GetFcpTargetMappingV2(3HBAAPI)
HBA_GetNumberOfAdapters(3HBAAPI)
HBA_GetPersistentBindingV2(3HBAAPI)
HBA_GetPortAttributesByWWN(3HBAAPI)
HBA_GetPortStatistics(3HBAAPI)
HBA_GetVendorLibraryAttributes(3HBAAPI)
HBA_GetWrapperLibraryAttributes(3HBAAPI)
HBA_RefreshAdapterConfiguration(3HBAAPI)
HBA_RefreshInformation(3HBAAPI)
HBA_RegisterForAdapterAddEvents(3HBAAPI)
HBA_RegisterForAdapterEvents(3HBAAPI)
HBA_RegisterForAdapterPortEvents(3HBAAPI)
HBA_RegisterForAdapterPortStatEvents(3HBAAPI)
HBA_RegisterForLinkEvents(3HBAAPI)
HBA_RegisterForTargetEvents(3HBAAPI)
HBA_RemoveAllPersistentBindings(3HBAAPI)
HBA_RemovePersistentBinding(3HBAAPI)
HBA_ScsiReadCapacityV2(3HBAAPI)
HBA_SetBindingSupport(3HBAAPI)
HBA_SetPersistentBindingV2(3HBAAPI)
IFDHCreateChannelByName(3SMARTCARD)
IFDHGetCapabilities(3SMARTCARD)
IFDHSetCapabilities(3SMARTCARD)
IFDHSetProtocolParameters(3SMARTCARD)
MP_AssignLogicalUnitToTPG(3MPAPI)
MP_DeregisterForObjectPropertyChanges(3MPAPI)
MP_DeregisterForObjectVisibilityChanges(3MPAPI)
MP_DisableAutoFailback(3MPAPI)
Extended Library Functions - Part 4
- radix-independent exponent
c99 [ flag... ] file... -lm [ library... ] #include <math.h> double logb(double x);
float logbf(float x);
long double logbl(long double x);
cc [ flag... ] file... -lm [ library... ] #include <math.h> double logb(double x);
float logbf(float x);
long double logbl(long double x);
These functions compute the exponent of x, which is the integral part of logr |x|, as a signed floating point value, for non-zero x, where r is the radix of the machine's floating-point arithmetic, which is the value of FLT_RADIX defined in the <float.h> header.
Upon successful completion, these functions return the exponent of x.
If x is subnormal:
For SUSv3–conforming applications compiled with the c99 compiler driver (see standards(5)), the exponent of x as if x were normalized is returned.
Otherwise, if compiled with the cc compiler driver, -1022, -126, and -16382 are returned for logb(), logbf(), and logbl(), respectively.
If x is ±0, a pole error occurs and logb(), logbf(), and logbl() return -HUGE_VAL, -HUGE_VALF, and -HUGE_VALL, respectively.
If x is NaN, a NaN is returned.
If x is ±Inf, +Inf is returned.
These functions will fail if:
The value of x is ±0.
If the integer expression (math_errhandling & MATH_ERREXCEPT) is non-zero, the divide-by-zero floating-point exception is raised.
The logb() function sets errno to EDOM if the value of x is 0.
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.
An application can also set errno to 0 before calling logb(). On return, if errno is non-zero, an error has occurred. The logbf() and logbl() functions do not set errno.
See attributes(5) for descriptions of the following attributes:
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feclearexcept(3M), fetestexcept(3M), ilogb(3M), math.h(3HEAD), matherr(3M), scalb(3M), attributes(5), standards(5)