Common mathematical functions
C Numerics Common mathematical functions
Functions
Defined in header <stdlib.h> | |
| abslabsllabs(C99) | computes absolute value of an integral value (|x|) (function) |
| divldivlldiv(C99) | computes quotient and remainder of integer division (function) |
Defined in header <inttypes.h> | |
| imaxabs(C99) | computes absolute value of an integral value (|x|) (function) |
| imaxdiv(C99) | computes quotient and remainder of integer division (function) |
Defined in header <math.h> | |
Basic operations | |
| fabsfabsffabsl(C99)(C99) | computes absolute value of a floating-point value (|x|) (function) |
| fmodfmodffmodl(C99)(C99) | computes remainder of the floating-point division operation (function) |
| remainderremainderfremainderl(C99)(C99)(C99) | computes signed remainder of the floating-point division operation (function) |
| remquoremquofremquol(C99)(C99)(C99) | computes signed remainder as well as the three last bits of the division operation (function) |
| fmafmaffmal(C99)(C99)(C99) | computes fused multiply-add operation (function) |
| fmaxfmaxffmaxl(C99)(C99)(C99) | determines larger of two floating-point values (function) |
| fminfminffminl(C99)(C99)(C99) | determines smaller of two floating-point values (function) |
| fdimfdimffdiml(C99)(C99)(C99) | determines positive difference of two floating-point values (max(0, x-y)) (function) |
| nannanfnanl(C99)(C99)(C99) | returns a NaN (not-a-number) (function) |
Exponential functions | |
| expexpfexpl(C99)(C99) | computes e raised to the given power (ex) (function) |
| exp2exp2fexp2l(C99)(C99)(C99) | computes 2 raised to the given power (2x) (function) |
| expm1expm1fexpm1l(C99)(C99)(C99) | computes e raised to the given power, minus one (ex-1) (function) |
| loglogflogl(C99)(C99) | computes natural (base-e) logarithm (ln(x)) (function) |
| log10log10flog10l(C99)(C99) | computes common (base-10) logarithm (log10(x)) (function) |
| log2log2flog2l(C99)(C99)(C99) | computes base-2 logarithm (log2(x)) (function) |
| log1plog1pflog1pl(C99)(C99)(C99) | computes natural (base-e) logarithm of 1 plus the given number (ln(1+x)) (function) |
Power functions | |
| powpowfpowl(C99)(C99) | computes a number raised to the given power (xy) (function) |
| sqrtsqrtfsqrtl(C99)(C99) | computes square root (√x) (function) |
| cbrtcbrtfcbrtl(C99)(C99)(C99) | computes cubic root (3√x) (function) |
| hypothypotfhypotl(C99)(C99)(C99) | computes square root of the sum of the squares of two given numbers (√x2 +y2 ) (function) |
Trigonometric functions | |
| sinsinfsinl(C99)(C99) | computes sine (sin(x)) (function) |
| coscosfcosl(C99)(C99) | computes cosine (cos(x)) (function) |
| tantanftanl(C99)(C99) | computes tangent (tan(x)) (function) |
| asinasinfasinl(C99)(C99) | computes arc sine (arcsin(x)) (function) |
| acosacosfacosl(C99)(C99) | computes arc cosine (arccos(x)) (function) |
| atanatanfatanl(C99)(C99) | computes arc tangent (arctan(x)) (function) |
| atan2atan2fatan2l(C99)(C99) | computes arc tangent, using signs to determine quadrants (function) |
Hyperbolic functions | |
| sinhsinhfsinhl(C99)(C99) | computes hyperbolic sine (sh(x)) (function) |
| coshcoshfcoshl(C99)(C99) | computes hyperbolic cosine (ch(x)) (function) |
| tanhtanhftanhl(C99)(C99) | computes hyperbolic tangent (function) |
| asinhasinhfasinhl(C99)(C99)(C99) | computes inverse hyperbolic sine (arsinh(x)) (function) |
| acoshacoshfacoshl(C99)(C99)(C99) | computes inverse hyperbolic cosine (arcosh(x)) (function) |
| atanhatanhfatanhl(C99)(C99)(C99) | computes inverse hyperbolic tangent (artanh(x)) (function) |
Error and gamma functions | |
| erferfferfl(C99)(C99)(C99) | computes error function (function) |
| erfcerfcferfcl(C99)(C99)(C99) | computes complementary error function (function) |
| tgammatgammaftgammal(C99)(C99)(C99) | computes gamma function (function) |
| lgammalgammaflgammal(C99)(C99)(C99) | computes natural (base-e) logarithm of the gamma function (function) |
Nearest integer floating-point operations | |
| ceilceilfceill(C99)(C99) | computes smallest integer not less than the given value (function) |
| floorfloorffloorl(C99)(C99) | computes largest integer not greater than the given value (function) |
| trunctruncftruncl(C99)(C99)(C99) | rounds to nearest integer not greater in magnitude than the given value (function) |
| roundlroundllround(C99)(C99)(C99) | rounds to nearest integer, rounding away from zero in halfway cases (function) |
| nearbyintnearbyintfnearbyintl(C99)(C99)(C99) | rounds to an integer using current rounding mode (function) |
| rintrintfrintllrintlrintflrintlllrintllrintfllrintl(C99)(C99)(C99)(C99)(C99)(C99)(C99)(C99)(C99) | rounds to an integer using current rounding mode with exception if the result differs (function) |
Floating-point manipulation functions | |
| frexpfrexpffrexpl(C99)(C99) | breaks a number into significand and a power of 2 (function) |
| ldexpldexpfldexpl(C99)(C99) | multiplies a number by 2 raised to a power (function) |
| modfmodffmodfl(C99)(C99) | breaks a number into integer and fractional parts (function) |
| scalbnscalbnfscalbnlscalblnscalblnfscalblnl(C99) | |