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C Math Library

The following mathematical functions correspond to definitions and declarations in math.h.

As a general introduction to the C Library mathematical functions, see Overview of the Mathematical Functions (math.h).

• acos, acosf
  [arc cosine]
• acosh, acoshf
  [inverse hyperbolic cosine]
• asin, asinf
  [arc sine]
• asinh, asinhf
  [inverse hyperbolic sine]
• atan, atanf
  [arc tangent]
• atan2, atan2f
  [arc tangent of y/x]
• atan2, atan2f
  [arc tangent of y/x]
• atanh, atanhf
  [inverse hyperbolic tangent]
• cbrt, cbrtf
  [cube root]
• copysign, copysignf
  [sign of y, magnitude of x]
• cosh, coshf
  [hyperbolic cosine]
• erf, erff, erfc, erfcf
  [error function]
• exp, expf
  [exponential]
• expm1, expm1f
  [exponential minus 1]
• fabs, fabsf
  [absolute value (magnitude)]
• floor, floorf, ceil, ceilf
  [floor and ceiling]
• fmod, fmodf
  [floating-point remainder (modulo)]
• frexp, frexpf
  [split floating-point number]
• gamma, gammaf, lgamma, lgammaf,
  gamma_r, gammaf_r, lgamma_r, lgammaf_r
  [logarithmic gamma function]
• hypot, hypotf
  [distance from origin]
• ilogb, ilogbf
  [get exponent of floating point number]
• infinity, infinityf
  [representation of infinity]
• isnan, isnanf, isinf, isinff, finite, finitef
  [test for exceptional numbers]
• jN, jNf, yN, yNf
  [Bessel functions]
• ldexp, ldexpf
  [load exponent]
• log, logf
  [natural logarithms]
• log10, log10f
  [base 10 logarithms]
• log1p, log1pf
  [log of 1 + x]
• matherr
  [modifiable math error handler]
• modf, modff
  [split fractional and integer parts]
• nan, nanf
  [representation of infinity]
• nextafter, nextafterf
  [get next number]
• pow, powf
  [x to the power y]
• rint, rintf, remainder, remainderf
  [round and remainder]
• scalbn, scalbnf
  [scale by integer]
• sinh, sinhf
  [hyperbolic sine]
• sqrt, sqrtf
  [positive square root]
• tan, tanf
  [tangent]
• tanh, tanhf
  [hyperbolic tangent]
• Reentrancy Properties of libm