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| সি এবং সি++ এর প্রয়োজনীয় ফাংশনসমূহ (বর্ণনা সহ) |
abs,labs,llabs computes absolute value of an integer value
fabs computes absolute value of a floating point value
div,ldiv,lldiv computes the quotient and remainder of integer division
fmod remainder of the floating point division operation
remainder signed remainder of the division operation
remquo signed remainder as well as the three last bits of the division operation
fma fused multiply-add operation
fmax larger of two floating point values
fmin smaller of two floating point values
fdim positive difference of two floating point values
nan,nanf,nanl returns a not-a-number (NaN)
Exponential
functions
exp returns e raised to the given power
exp2 returns 2 raised to the given power
expm1 returns e raised to the given power, minus one
log computes natural logarithm (to base e)
log2 computes binary logarithm (to base 2)
log10 computes common logarithm (to base 10)
log1p computes natural logarithm (to base e) of 1 plus the given number
ilogb extracts exponent of the number
logb extracts exponent of the number
Power
functions
sqrt computes square root
cbrt computes cubic root
hypot computes square root of the sum of the squares of two given numbers
pow raises a number to the given power[4]
Trigonometric
functions
sin computes sine
cos computes cosine
tan computes tangent
asin computes arc sine
acos computes arc cosine
atan computes arc tangent
atan2 computes arc tangent, using signs to determine quadrants
Hyperbolic
functions
sinh computes hyperbolic sine
cosh computes hyperbolic cosine
tanh computes hyperbolic tangent
asinh computes hyperbolic arc sine
acosh computes hyperbolic arc cosine
atanh computes hyperbolic arc tangent
Error and gamma functions
erf computes error function
erfc computes complementary error function
lgamma computes natural logarithm of the gamma function
tgamma computes gamma function
Nearest integer floating point operations
ceil returns the nearest integer not less than the given value
floor returns the nearest integer not greater than the given value
trunc returns the nearest integer not greater in magnitude than the given value
round,lround,llround returns the nearest integer, rounding away from zero in halfway cases
nearbyint returns the nearest integer using current rounding mode
rint,lrint,llrint returns the nearest integer using current rounding mode with exception if the result differs
Floating point manipulation
functions frexp decomposes a number into significand and a power of 2
ldexp multiplies a number by 2 raised to a power
modf decomposes a number into integer and fractional parts
scalbn
scalbln multiplies a number by FLT_RADIX raised to a power
nextafter
nexttoward returns next representable floating point value towards the given value
copysign copies the sign of a floating point value
Classification fpclassify categorizes the given floating point value
isfinite checks if the given number has finite value
isinf checks if the given number is infinite
isnan checks if the given number is NaN
isnormal checks if the given number is normal
signbit checks if the given number is negative
feclearexcept clears exceptions (C99)
fegetenv stores current floating-point environment (C99)
fegetexceptflag stores current status flags (C99)
fegetround retrieves current rounding direction (C99)
feholdexcept saves current floating-point environment and clears all exceptions (C99)
feraiseexcept raises a floating-point exception (C99)
fesetenv sets current floating-point environment (C99)
fesetexceptflag sets current status flags (C99)
fesetround sets current rounding direction (C99)
fetestexcept tests whether certain exceptions have been raised (C99)
feupdateenv restores floating-point environment, but keeps current exceptions (C99)
Basic operations
cabs computes absolute value (C99)
carg computes argument of a complex number (C99)
cimag computes imaginary part of a complex number (C99)
creal computes real part of a complex number (C99)
conj computes complex conjugate (C99)
cproj computes complex projection into the Riemann sphere (C99)
Exponentiation operations
cexp computes complex exponential (C99)
clog computes complex logarithm (C99)
csqrt computes complex square root (C99)
cpow computes complex power (C99)
Trigonometric operations
csin computes complex sine (C99)
ccos computes complex cosine (C99)
ctan computes complex tangent (C99)
casin computes complex arc sine (C99)
cacos computes complex arc cosine (C99)
catan computes complex arc tangent (C99)
Hyperbolic operations
csinh computes complex hyperbolic sine (C99)
ccosh computes complex hyperbolic cosine (C99)
ctanh computes complex hyperbolic tangent (C99)
casinh computes complex hyperbolic arc sine (C99)
cacosh computes complex hyperbolic arc cosine (C99)
catanh computes complex hyperbolic arc tangent (C99)
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