Arithmetic with integers
“abs - return integer absolute value”
"imaxabs - return integer absolute value (intmax_t)"
"imaxdiv - division of integers (intmax_t)"
“labs - return long integer absolute value”
“ldiv - long division of integers”
“llabs - return absolute value of an integer (long long int)”
“lldiv - division of integers (long long int)”
“llrint, llrintf, llrintl - round to nearest integer value (long long int)”
“llround, llroundf, llroundl - round up to next integer value (long long int)”
“lrint, lrintf, lrintl - round to nearest integer value (long int)”
“lround, lroundf, lroundl - round up to next integer value (long int)”
Arithmetic with floating-point numbers
“cabs - calculate absolute value of complex number(BS2000)”
“ceil, ceilf, ceill - round up floating-point number”
“cbrt, cbrtf, cbrtl - cube root”
"copysign, copysignf, copysignl - copy sign"
"erf, erff, erfl, erfc, erfcf, erfcl - error and complementary error functions"
“errno - variable for error return values”
“exp, expf, expl - use exponential function”
“expm1, expm1f, expm1l - compute exponential function”
"exp2, exp2f, exp2l - use exponential function"
“fabs, fabsf, fabsl - compute absolute value of floating-point number”
"fdim, fdimf, fdiml - compute positive difference"
“floor, floorf, floorl- round off floating point number”
"fmax, fmaxf, fmaxl - determine maximum numeric value"
"fmin, fminf, fminl - determine minimum numeric value"
“fmod, fmodf, fmodl - compute floating-point remainder value function”
"fpclassify - macro to classify floating-point numbers"
“frexp, frexpf, frexpl - extract mantissa and exponent from double precision number”
“gamma - compute logarithm of gamma function”
“hypot, hypotf, hypotl - Euclidean distance function”
“ilogb, ilogbf, ilogbl - get exponent part of floating-point number”
"isfinite - Macro to test for finite value"
"isinf - Macro to test for infinity"
“isnan - test for NaN (not a number)”
"isnormal - Macro to test for a normal value"
“j0, j1, jn - Bessel functions of first kind”
“ldexp, ldexpf, ldexpl - load exponent of floating-point number”
“lgamma, lgammaf, lgammal, gamma, signgam - compute logarithm of gamma function”
“log, logf, logl - natural logarithm function”
“log10, log10f, log10l - base 10 logarithm function”
“log1p, log1pf, log1pl - compute natural log”
"log2, log2f, log2l - base 2 logarithm function"
“logb, logbf, logbl - get exponent part of floating-point number”
“modf, modff, modfl - split floating-point number into integral and fractional parts”
"nearbyint, nearbyintf, nearbyintl - round to nearest integer value"
“pow, powf, powl - power function”
“remainder, remainderf, remainderl - remainder from division”
"remquo, remquof, remquol - remainder from division"
“rint, rintf, rintl - round to nearest integer value”
“round, roundf, roundl - round up to next integer value”
“scalb - load exponent of base-independent floating-point number”
“signgam - variable for sign of lgamma”
“sqrt, sqrtf, sqrtl - square root function”
"tgamma, tgammaf, tgammal - compute gamma function"
"trunc, truncf, truncl - round to truncated integer value"
“y0, y1, yn - Bessel functions of the second kind”
Trigonometric, hyperbolic and arc functions
“acos, acosf, acosl - arc cosine function”
“acosh, acoshf, acoshl, asinh, asinhf, asinhl, atanh, atanhl, atanhf - inverse hyperbolic functions”
“asin, asinf, asinl - arc sine function”
“atan, atanf, atanl - arc tangent function”
“atan2, atan2f, atan2l - arc tangent of x/y”
“cos, cosf, cosl - cosine function”
“cosh, coshf, coshl - hyperbolic cosine function”
“sin, sinf, sinl - sine function”
“sinh, sinhf, sinhl - hyperbolic sine function”
“tan, tanf, tanh - compute tangent”
“tanh, tanhf, tanhl - compute hyperbolic tangent”
Random numbers
“drand48 - generate pseudo-random numbers between 0.0 and 1.0”
"erand48 - generate pseudo-random numbers between 0.0 and 1.0 with initialization value" (see erand48 in chapter "drand48, ...- generate pseudo-random number")
“initstate, random, setstate, srandom - generate pseudo-random numbers”
"jrand48 - generate pseudo random numbers between -231 and 231 with initialization value" (see jrand48 in chapter "drand48, ... - generate pseudo-random numbers")
„lcong48 - pseudo-random number (signed long int) generator" (see lcong48 in chapter "drand48, ... - generate pseudo-random numbers")
"lrand48 - generate pseudo random numbers between 0 and 231" (see lrand48 in chapter "drand48, ... - generate pseudo-random numbers")
"mrand48 - generate pseudo random numbers between -231 and 231" (see mrand48 in chapter "drand48, ... - generate pseudo-random numbers")
"nrand48 - generate pseudo random numbers between 0 and 231 with initialization value" (see nrand48 in chapter "drand48, ... - generate pseudo-random numbers.0")
“rand - pseudo-random number generator (int)”
“seed48 - set seed (int) for pseudo-random numbers”" (see seed48 in chapter "drand48, ... - generate pseudo-random numbers")
“srand - generate pseudo-random numbers with seed”
"srand48 - seed (double-precision) pseudo-random number generator" (see srand48 in chapter "drand48, ... - generate pseudo-random numbers")