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Download v1.1 ARM Tools Reference
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ARM Embedded Tools Reference frexp, ldexp, modf, scalbn, scalbln Math.h Tgmath.h Description frexp frexpl frexpf frexp Splits a float x into fraction f and exponent n, so that: f = 0.0 or 0.5 ≤ | f | ≤ 1.0 and f*2 n = x. Returns f, stores n. ldexp ldexpl ldexpf ldexp Inverse of frexp. Returns the result of x*2n. (x and n are both arguments). modf modfl modff − Splits a float x into fraction f and integer n, so that: | f | < 1.0 and f+n=x. Returns f, stores n. scalbn scalbnl scalbnf scalbn Computes the result of x*FLT_RADIXn. efficiently, not normally by computing FLT_RADIXn explicitly. scalbln scalblnl scalblnf scalbln Same as scalbn but with argument n as long int. Power and absolute−value functions Math.h Tgmath.h Description cbrt cbrtl cbrtf cbrt Returns the real cube root of x (=x1/3). (Not implemented) fabs fabsl fabsf fabs Returns the absolute value of x (|x|). (abs, labs, llabs, div, ldiv, lldiv are defined in stdlib.h) fma fmal fmaf fma Floating−point multiply add. Returns x*y+z. (Not implemented) hypot hypotl hypotf hypot Returns the square root of x2+y2. pow powl powf power Returns x raised to the power y (xy). sqrt sqrtl sqrtf sqrt Returns the non−negative square root of x. x0. Manipulation functions: copysign, nan, nextafter, nexttoward Math.h copysign nan nanl copysignl copysignf nanf Tgmath.h Description copysign Returns the value of x with the sign of y. − Returns a quiet NaN, if available, with content ind cated through tagp. (Not implemented) nextafter nextafterl nextafterf nextafter Returns the next representable value in the specified format after x in the direction of y. Returns y is x=y. (Not implemented) nexttoward nexttowardl nexttowardf nexttoward Same as nextafter, except that the second argu ment in all three variants is of type long double. Returns y if x=y. (Not implemented) 2−10
