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300 lines
8.3 KiB
Plaintext
300 lines
8.3 KiB
Plaintext
[section:c99 C99 C Functions]
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[h4 Supported C99 Functions]
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namespace boost{ namespace math{ namespace tr1{ extern "C"{
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typedef unspecified float_t;
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typedef unspecified double_t;
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double acosh(double x);
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float acoshf(float x);
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long double acoshl(long double x);
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double asinh(double x);
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float asinhf(float x);
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long double asinhl(long double x);
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double atanh(double x);
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float atanhf(float x);
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long double atanhl(long double x);
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double cbrt(double x);
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float cbrtf(float x);
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long double cbrtl(long double x);
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double copysign(double x, double y);
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float copysignf(float x, float y);
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long double copysignl(long double x, long double y);
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double erf(double x);
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float erff(float x);
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long double erfl(long double x);
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double erfc(double x);
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float erfcf(float x);
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long double erfcl(long double x);
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double expm1(double x);
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float expm1f(float x);
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long double expm1l(long double x);
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double fmax(double x, double y);
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float fmaxf(float x, float y);
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long double fmaxl(long double x, long double y);
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double fmin(double x, double y);
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float fminf(float x, float y);
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long double fminl(long double x, long double y);
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double hypot(double x, double y);
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float hypotf(float x, float y);
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long double hypotl(long double x, long double y);
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double lgamma(double x);
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float lgammaf(float x);
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long double lgammal(long double x);
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long long llround(double x);
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long long llroundf(float x);
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long long llroundl(long double x);
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double log1p(double x);
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float log1pf(float x);
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long double log1pl(long double x);
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long lround(double x);
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long lroundf(float x);
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long lroundl(long double x);
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double nextafter(double x, double y);
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float nextafterf(float x, float y);
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long double nextafterl(long double x, long double y);
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double nexttoward(double x, long double y);
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float nexttowardf(float x, long double y);
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long double nexttowardl(long double x, long double y);
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double round(double x);
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float roundf(float x);
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long double roundl(long double x);
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double tgamma(double x);
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float tgammaf(float x);
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long double tgammal(long double x);
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double trunc(double x);
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float truncf(float x);
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long double truncl(long double x);
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}}}} // namespaces
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In addition sufficient additional overloads of the `double` versions of the
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above functions are provided, so that calling the function with any mixture
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of `float`, `double`, `long double`, or /integer/ arguments is supported, with the
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return type determined by the __arg_promotion_rules.
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For example:
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acoshf(2.0f); // float version, returns float.
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acosh(2.0f); // also calls the float version and returns float.
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acosh(2.0); // double version, returns double.
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acoshl(2.0L); // long double version, returns a long double.
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acosh(2.0L); // also calls the long double version.
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acosh(2); // integer argument is treated as a double, returns double.
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[h4 Quick Reference]
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More detailed descriptions of these functions are available in the
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C99 standard.
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typedef unspecified float_t;
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typedef unspecified double_t;
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In this implementation `float_t` is the same as type `float`, and
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`double_t` the same as type `double` unless the preprocessor symbol
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FLT_EVAL_METHOD is defined, in which case these are set as follows:
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[table
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[[FLT_EVAL_METHOD][float_t][double_t]]
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[[0][float][double]]
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[[1][double][double]]
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[[2][long double][long double]]
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]
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double acosh(double x);
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float acoshf(float x);
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long double acoshl(long double x);
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Returns the inverse hyperbolic cosine of /x/.
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See also __acosh for the full template (header only) version of this function.
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double asinh(double x);
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float asinhf(float x);
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long double asinhl(long double x);
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Returns the inverse hyperbolic sine of /x/.
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See also __asinh for the full template (header only) version of this function.
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double atanh(double x);
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float atanhf(float x);
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long double atanhl(long double x);
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Returns the inverse hyperbolic tangent of /x/.
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See also __atanh for the full template (header only) version of this function.
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double cbrt(double x);
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float cbrtf(float x);
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long double cbrtl(long double x);
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Returns the cubed root of /x/.
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See also __cbrt for the full template (header only) version of this function.
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double copysign(double x, double y);
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float copysignf(float x, float y);
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long double copysignl(long double x, long double y);
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Returns a value with the magnitude of /x/ and the sign of /y/.
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double erf(double x);
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float erff(float x);
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long double erfl(long double x);
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Returns the error function of /x/:
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[equation erf1]
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See also __erf for the full template (header only) version of this function.
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double erfc(double x);
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float erfcf(float x);
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long double erfcl(long double x);
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Returns the complementary error function of /x/ `1-erf(x)` without the loss
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of precision implied by the subtraction.
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See also __erfc for the full template (header only) version of this function.
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double expm1(double x);
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float expm1f(float x);
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long double expm1l(long double x);
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Returns `exp(x)-1` without the loss
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of precision implied by the subtraction.
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See also __expm1 for the full template (header only) version of this function.
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double fmax(double x, double y);
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float fmaxf(float x, float y);
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long double fmaxl(long double x, long double y);
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Returns the larger (most positive) of /x/ and /y/.
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double fmin(double x, double y);
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float fminf(float x, float y);
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long double fminl(long double x, long double y);
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Returns the smaller (most negative) of /x/ and /y/.
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double hypot(double x, double y);
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float hypotf(float x, float y);
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long double hypotl(long double x, long double y);
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Returns `sqrt(x*x + y*y)` without the danger of numeric overflow
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implied by that formulation.
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See also __hypot for the full template (header only) version of this function.
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double lgamma(double x);
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float lgammaf(float x);
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long double lgammal(long double x);
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Returns the log of the gamma function of /x/.
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[equation lgamm1]
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See also __lgamma for the full template (header only) version of this function.
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long long llround(double x);
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long long llroundf(float x);
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long long llroundl(long double x);
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Returns the value /x/ rounded to the nearest integer as a `long long`:
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equivalent to `floor(x + 0.5)`
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See also __llround for the full template (header only) version of this function.
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double log1p(double x);
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float log1pf(float x);
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long double log1pl(long double x);
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Returns the `log(x+1)` without the loss of precision
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implied by that formulation.
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See also __log1p for the full template (header only) version of this function.
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long lround(double x);
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long lroundf(float x);
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long lroundl(long double x);
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Returns the value /x/ rounded to the nearest integer as a `long`:
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equivalent to `floor(x + 0.5)`
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See also __lround for the full template (header only) version of this function.
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double nextafter(double x, double y);
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float nextafterf(float x, float y);
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long double nextafterl(long double x, long double y);
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Returns the next representable floating point number after /x/
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in the direction of /y/, or /x/ if `x == y`.
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double nexttoward(double x, long double y);
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float nexttowardf(float x, long double y);
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long double nexttowardl(long double x, long double y);
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As `nextafter`, but with /y/ always expressed as a `long double`.
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double round(double x);
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float roundf(float x);
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long double roundl(long double x);
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Returns the value /x/ rounded to the nearest integer:
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equivalent to `floor(x + 0.5)`
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See also __round for the full template (header only) version of this function.
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double tgamma(double x);
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float tgammaf(float x);
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long double tgammal(long double x);
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Returns the gamma function of /x/:
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[equation gamm1]
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See also __tgamma for the full template (header only) version of this function.
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double trunc(double x);
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float truncf(float x);
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long double truncl(long double x);
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Returns /x/ truncated to the nearest integer.
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See also __trunc for the full template (header only) version of this function.
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See also [@http://www.open-std.org/JTC1/SC22/WG14/www/docs/n1124.pdf C99 ISO Standard]
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[endsect]
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[/
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Copyright 2008 John Maddock and Paul A. Bristow.
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE_1_0.txt or copy at
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http://www.boost.org/LICENSE_1_0.txt).
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]
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