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Floating-point extensions part 4: supplementary functions

Floating-point extensions for C - Part 4: Supplementary functions, ISO/IEC TS 18661-4:2015, defines the following new components for the C standard library, as recommended by ISO/IEC/IEEE 60559:2011 (the current revision of IEEE-754).

Predefined feature test macros integer constant of type long and value 201506L
(macro constant) Supplementary mathematical functions compute 2x -1
(function) [edit] compute 10x
(function) [edit] compute 10x -1
(function) [edit] compute ln(1+x) (same as log1p)
(function) [edit] compute log2(1+x)
(function) [edit] compute log10(1+x)
(function) [edit] compute the inverse square root x-1/2
(function) [edit] compute compound interest, (1+x)n
(function) [edit] compute the nth root of x, x1/n
(function) [edit] compute x raised to the nth power, where n is integer
(function) [edit] compute x raised to the y power, xy
(function) [edit] compute arccos(x)/Ï (measuring the angle in half-revolutions)
(function) [edit] compute arcsin(x)/Ï (measuring the angle in half-revolutions)
(function) [edit] compute arctan(x)/Ï (measuring the angle in half-revolutions)
(function) [edit] compute arctan(y/x)/Ï (measuring the angle in half-revolutions)
(function) [edit] compute cos(Ïx) (measuring the angle in half-revolutions)
(function) [edit] compute sin(Ïx) (measuring the angle in half-revolutions)
(function) [edit] compute tan(Ïx) (measuring the angle in half-revolutions)
(function) [edit] Reduction functions compute the sum of n members of an array
(function) [edit] compute the sum of the absolute values of n members of an array
(function) [edit] compute the sum of squares of n members of an array
(function) [edit] compute the dot product between n members of two arrays
(function) [edit] compute the product of n members of an array as a scaled value and a scale factor
(function) [edit] compute the dot product of n members of two arrays as a scaled value and a scale factor
(function) [edit] compute the product of the differences between corresponding n members of two arrays as a scaled value and a scale factor
(function) [edit] Correctly-rounded version of functions

crexp(optional)

(FP Ext 4 TS)

correctly-rounded version of exp
(function)

crexpm1(optional)

(FP Ext 4 TS)

correctly-rounded version of expm1
(function)

crexp2(optional)

(FP Ext 4 TS)

correctly-rounded version of exp2
(function)

crexp2m1(optional)

(FP Ext 4 TS)

correctly-rounded version of exp2m1
(function)

crexp10(optional)

(FP Ext 4 TS)

correctly-rounded version of exp10
(function)

crexp10m1(optional)

(FP Ext 4 TS)

correctly-rounded version of exp10m1
(function)

crlog(optional)

(FP Ext 4 TS)

correctly-rounded version of log
(function)

crlog2(optional)

(FP Ext 4 TS)

correctly-rounded version of log2
(function)

crlog10(optional)

(FP Ext 4 TS)

correctly-rounded version of log10
(function)

crlog1p(optional)

(FP Ext 4 TS)

correctly-rounded version of log1p
(function)

crlogp1(optional)

(FP Ext 4 TS)

correctly-rounded version of logp1
(function)

crlog2p1(optional)

(FP Ext 4 TS)

correctly-rounded version of log2p1
(function)

crlog10p1(optional)

(FP Ext 4 TS)

correctly-rounded version of log10p1
(function)

crrsqrt(optional)

(FP Ext 4 TS)

correctly-rounded version of rsqrt
(function)

crcompoundn(optional)

(FP Ext 4 TS)

correctly-rounded version of compoundn
(function)

crrootn(optional)

(FP Ext 4 TS)

correctly-rounded version of rootn
(function)

crpown(optional)

(FP Ext 4 TS)

correctly-rounded version of pown
(function)

crpow(optional)

(FP Ext 4 TS)

correctly-rounded version of pow
(function)

crpowr(optional)

(FP Ext 4 TS)

correctly-rounded version of powr
(function)

crsin(optional)

(FP Ext 4 TS)

correctly-rounded version of sin
(function)

crcos(optional)

(FP Ext 4 TS)

correctly-rounded version of cos
(function)

crtan(optional)

(FP Ext 4 TS)

correctly-rounded version of tan
(function)

crsinpi(optional)

(FP Ext 4 TS)

correctly-rounded version of sinpi
(function)

crcospi(optional)

(FP Ext 4 TS)

correctly-rounded version of cospi
(function)

crtanpi(optional)

(FP Ext 4 TS)

correctly-rounded version of tanpi
(function)

crasinpi(optional)

(FP Ext 4 TS)

correctly-rounded version of asinpi
(function)

cracospi(optional)

(FP Ext 4 TS)

correctly-rounded version of acospi
(function)

cracospi(optional)

(FP Ext 4 TS)

correctly-rounded version of acospi
(function)

cratanpi(optional)

(FP Ext 4 TS)

correctly-rounded version of atanpi
(function)

cratan2pi(optional)

(FP Ext 4 TS)

correctly-rounded version of atan2pi
(function)

crasin(optional)

(FP Ext 4 TS)

correctly-rounded version of asin
(function)

cracos(optional)

(FP Ext 4 TS)

correctly-rounded version of acos
(function)

cratan(optional)

(FP Ext 4 TS)

correctly-rounded version of atan
(function)

cratan2(optional)

(FP Ext 4 TS)

correctly-rounded version of atan2
(function)

crsinh(optional)

(FP Ext 4 TS)

correctly-rounded version of sinh
(function)

crcosh(optional)

(FP Ext 4 TS)

correctly-rounded version of cosh
(function)

crtanh(optional)

(FP Ext 4 TS)

correctly-rounded version of tanh
(function)

crasinh(optional)

(FP Ext 4 TS)

correctly-rounded version of asinh
(function)

cracosh(optional)

(FP Ext 4 TS)

correctly-rounded version of acosh
(function)

cratanh(optional)

(FP Ext 4 TS)

correctly-rounded version of atanh
(function)

crhypot(optional)

(FP Ext 4 TS)

correctly-rounded version of hypot
(function) Complex version of functions

cexp2m1(optional)

(FP Ext 4 TS)

complex number version of exp2m1
(function)

cexp10(optional)

(FP Ext 4 TS)

complex number version of exp10
(function)

cexp10m1(optional)

(FP Ext 4 TS)

complex number version of exp10m1
(function)

clogp1(optional)

(FP Ext 4 TS)

complex number version of logp1
(function)

clog2p1(optional)

(FP Ext 4 TS)

complex number version of log2p1
(function)

clog10p1(optional)

(FP Ext 4 TS)

complex number version of log10p1
(function)

crsqrt (optional)

(FP Ext 4 TS)

complex number version of rsqrt
(function)

ccompoundn (optional)

(FP Ext 4 TS)

complex number version of compoundn
(function)

crootn(optional)

(FP Ext 4 TS)

complex number version of rootn
(function)

cpown (optional)

(FP Ext 4 TS)

complex number version of pown
(function)

cpowr(optional)

(FP Ext 4 TS)

complex number version of powr
(function)

cacospi(optional)

(FP Ext 4 TS)

complex number version of acospi
(function)

casinpi(optional)

(FP Ext 4 TS)

complex number version of asinpi
(function)

catanpi(optional)

(FP Ext 4 TS)

complex number version of atanpi
(function)

ccospi(optional)

(FP Ext 4 TS)

complex number version of cospi
(function)

csinpi(optional)

(FP Ext 4 TS)

complex number version of sinpi
(function)

ctanpi(optional)

(FP Ext 4 TS)

complex number version of tanpi
(function)

All functions added to the C library by this extension are only declared if a macro __STDC_WANT_IEC_60559_FUNCS_EXT__ is defined before math.h is included.

The decimal floating-point variants of every function are only defined if __STDC_WANT_IEC_60559_DFP_EXT__ is also defined before math.h is included.

The extended precision variants of every function are only defined if __STDC_WANT_IEC_60559_TYPES_EXT__ is defined before math.h is included.

The correctly-rounded versions of all functions (with the cr- prefix) are optional.

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