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Constant
(macro)
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EDOM
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Indicates the value to be set in errno if the value of a parameter input to a function is outside the range of values defined in the function.
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ERANGE
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Indicates the value to be set in errno if the result of a function cannot be represented as a double type value, or if an overflow or an underflow occurs.
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HUGE_VAL
HUGE_VALF <-lang=c99>
HUGE_VALL <-lang=c99>
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Indicates the value for the function return value if the result of a function overflows.
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INFINITY <-lang=c99>
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Expanded to a float-type constant expression that represents positive or unsigned infinity.
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NAN <-lang=c99>
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Defined when float-type qNaN is supported.
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FP_INFINITE <-lang=c99>
FP_NAN <-lang=c99>
FP_NORMAL <-lang=c99>
FP_SUBNORMAL <-lang=c99>
FP_ZERO <-lang=c99>
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These indicate exclusive types of floating-point values.
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FP_ILOGB0 <-lang=c99>
FP_ILOGBNAN <-lang=c99>
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These are expanded to an integer constant expression of the value returned by ilogb when they are 0 or not-a-number, respectively.
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MATH_ERRNO <-lang=c99>
MATH_ERREXCEPT <-lang=c99>
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These are expanded to integer constants 1 and 2, respectively.
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math_errhandling <-lang=c99>
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Expanded to an int-type expression whose value is a bitwise logical OR of MATH_ERRNO and MATH_ERREXCEPT.
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Type
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float_t <-lang=c99>
double_t <-lang=c99>
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These are floating-point types having the same width as float and double, respectively.
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Function (macro)
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fpclassify <-lang=c99>
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Classifies argument values into not-a-number, infinity, normalized number, denormalized number, and 0.
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isfinite <-lang=c99>
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Determines whether the argument is a finite value.
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isinf <-lang=c99>
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Determines whether the argument is infinity.
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isnan <-lang=c99>
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Determines whether the argument is a not-a-number.
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isnormal <-lang=c99>
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Determines whether the argument is a normalized number.
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signbit <-lang=c99>
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Determines whether the sign of the argument is negative.
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isgreater <-lang=c99>
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Determines whether the first argument is greater than the second argument.
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isgreaterequal <-lang=c99>
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Determines whether the first argument is equal to or greater than the second argument.
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isless <-lang=c99>
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Determines whether the first argument is smaller than the second argument.
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islessequal <-lang=c99>
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Determines whether the first argument is equal to or smaller than the second argument.
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islessgreater <-lang=c99>
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Determines whether the first argument is smaller or greater than the second argument.
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isunordered <-lang=c99>
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Determines whether the arguments are not ordered.
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Function
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acos / acosf / acosl
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Calculates the arc cosine of a floating-point number.
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asin / asinf / asinl
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Calculates the arc sine of a floating-point number.
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atan / atanf / atanl
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Calculates the arc tangent of a floating-point number.
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atan2 / atan2f / atan2l
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Calculates the arc tangent of the result of a division of two floating-point numbers.
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cos / cosf / cosl
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Calculates the cosine of a floating-point radian value.
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sin / sinf / sinl
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Calculates the sine of a floating-point radian value.
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tan / tanf / tanl
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Calculates the tangent of a floating-point radian value.
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cosh / coshf / coshl
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Calculates the hyperbolic cosine of a floating-point number.
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sinh / sinhf / sinhl
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Calculates the hyperbolic sine of a floating-point number.
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tanh / tanhf / tanhl
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Calculates the hyperbolic tangent of a floating-point number.
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exp / expf / expl
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Calculates the exponential function of a floating-point number.
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frexp / frexpf / frexpl
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Breaks a floating-point number into a [0.5, 1.0) value and a power of 2.
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ldexp / ldexpf / ldexpl
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Multiplies a floating-point number by a power of 2.
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log / logf / logl
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Calculates the natural logarithm of a floating-point number.
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log10 / log10f / log10l
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Calculates the base-ten logarithm of a floating-point number.
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modf / modff / modfl
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Breaks a floating-point number into integral and fractional parts.
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pow / powf / powl
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Calculates a power of a floating-point number.
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sqrt / sqrtf / sqrtl
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Calculates the positive square root of a floating-point number.
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Function
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ceil / ceilf / ceill
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Calculates the smallest integral value not less than or equal to the given floating-point number.
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fabs / fabsf / fabsl
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Calculates the absolute value of a floating-point number.
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floor / floorf / floorl
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Calculates the largest integral value not greater than or equal to the given floating-point number.
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fmod / fmodf / fmodl
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Calculates the remainder of a division of two floating-point numbers.
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acosh / acoshf / acoshl
<-lang=c99>
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Calculates the hyperbolic arc cosine of a floating-point number.
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asinh / asinhf / asinhl
<-lang=c99>
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Calculates the hyperbolic arc sine of a floating-point number.
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atanh / atanhf / atanhl
<-lang=c99>
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Calculates the hyperbolic arc tangent of a floating-point number.
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exp2 / exp2f / exp2l
<-lang=c99>
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Calculates the value of 2 raised to the power x.
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expm1 / expm1f / expm1l
<-lang=c99>
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Calculates the natural logarithm raised to the power x and subtracts 1 from the result.
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ilogb / ilogbf / ilogbl
<-lang=c99>
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Extracts the exponent of x as a signed int value.
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log1p / log1pf / log1pl
<-lang=c99>
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Calculates the natural logarithm of the argument + 1.
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log2 / log2f / log2l
<-lang=c99>
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Calculates the base-2 logarithm.
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logb / logbf / logbl
<-lang=c99>
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Extracts the exponent of x as a signed integer.
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scalbn / scalbnf / scalbnl / scalbln / scalblnf / scalblnl
<-lang=c99>
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Calculates x × FLT_RADIXn.
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cbrt / cbrtf / cbrtl
<-lang=c99>
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Calculates the cube root of a floating-point number.
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hypot / hypotf / hypotl
<-lang=c99>
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Calculates the square root of the sum of squares of two
parameters (
).
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erf / erff / erfl
<-lang=c99>
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Calculates the error function.
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erfc / erfcf / erfcl
<-lang=c99>
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Calculates the complementary error function.
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lgamma / lgammaf / lgammal
<-lang=c99>
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Calculates the natural logarithm of the absolute value of the gamma function.
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tgamma / tgammaf / tgammal
<-lang=c99>
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Calculates the gamma function.
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nearbyint / nearbyintf / nearbyintl
<-lang=c99>
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Rounds a floating-point number to an integer in the floating-point representation according to the current rounding direction.
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rint / rintf / rintl
<-lang=c99>
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Equivalent to nearbyint except that this function group may generate floating-point exception.
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Function
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lrint / lrintf / lrintl / llrint / llrintf / llrintl
<-lang=c99>
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Rounds a floating-point number to the nearest integer according to the rounding direction.
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round / roundf / roundl
<-lang=c99>
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Rounds a floating-point number to the nearest integer in the floating-point representation.
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lround / lroundf / lroundl / llround / llroundf / llroundl
<-lang=c99>
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Rounds a floating-point number to the nearest integer.
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trunc / truncf / truncl
<-lang=c99>
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Rounds a floating-point number to the nearest integer in the floating-point representation.
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remainder / remainderf / remainderl
<-lang=c99>
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Calculates remainder x REM y specified in the IEEE60559 standard.
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remquo / remquof / remquol
<-lang=c99>
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Calculates the value having the same sign as x/y and the absolute value congruent modulo-2n to the absolute value of the quotient.
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copysign / copysignf / copysignl
<-lang=c99>
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Generates a value consisting of the given absolute value and sign.
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nan / nanf / nanl
<-lang=c99>
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nan("n string") is equivalent to ("NAN(n string)", (char**) NULL).
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nextafter / nextafterf / nextafterl
<-lang=c99>
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Converts a floating-point number to the type of the function and calculates the representable value following the converted number on the real axis.
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nexttoward / nexttowardf / nexttowardl
<-lang=c99>
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Equivalent to the nextafter function group except that the second argument is of type long double and returns the second argument after conversion to the type of the function.
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fdim / fdimf / fdiml
<-lang=c99>
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Calculates the positive difference.
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fmax / fmaxf / fmaxl
<-lang=c99>
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Obtains the greater of two values.
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fmin / fminf / fminl
<-lang=c99>
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Obtains the smaller of two values.
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fma / fmaf / fmal
<-lang=c99>
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Calculates (d1 * d2) + d3 as a single ternary operation.
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