cdef extern from "math.h" nogil:
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double M_E
double M_LOG2E
double M_LOG10E
double M_SQRT2
double M_SQRT1_2
+ # C99 constants
+ float INFINITY
+ float NAN
+ double HUGE_VAL
+ float HUGE_VALF
+ long double HUGE_VALL
+
double acos(double x)
double asin(double x)
double atan(double x)
long lround(double)
double copysign(double, double)
+ float copysignf(float, float)
+ long double copysignl(long double, long double)
+
double erf(double)
+ float erff(float)
+ long double erfl(long double)
double erfc(double)
+ double erfcf(double)
+ long double erfcl(double)
double fdim(double x, double y)
double fma(double x, double y)
double scalbn(double x, int n)
double nan(char*) # const char*
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