Add sqrt(2) and 1/sqrt(2) math constants in npymath.

cournape · cournape · commit 9f69bfcd1588 · 2009-07-01T07:07:10.000Z
diff --git a/numpy/core/include/numpy/npy_math.h b/numpy/core/include/numpy/npy_math.h
@@ -63,6 +63,8 @@ NPY_INLINE static float __npy_nzerof(void)
 #define NPY_1_PI      0.3183098861837906715377675267450287  /* 1/pi */
 #define NPY_2_PI      0.6366197723675813430755350534900574  /* 2/pi */
 #define NPY_EULER     0.5772156649015328606065120900824024  /* Euler constant */
+#define NPY_SQRT2     1.41421356237309504880168872420969808   /* sqrt(2) */
+#define NPY_SQRT1_2   0.707106781186547524400844362104849039  /* 1/sqrt(2) */
 
 #define NPY_Ef        2.7182818284590452353602874713526625F /* e */
 #define NPY_LOG2Ef    1.4426950408889634073599246810018921F /* log_2 e */
@@ -75,6 +77,8 @@ NPY_INLINE static float __npy_nzerof(void)
 #define NPY_1_PIf     0.3183098861837906715377675267450287F /* 1/pi */
 #define NPY_2_PIf     0.6366197723675813430755350534900574F /* 2/pi */
 #define NPY_EULERf    0.5772156649015328606065120900824024F /* Euler constant */
+#define NPY_SQRT2f    1.41421356237309504880168872420969808F  /* sqrt(2) */
+#define NPY_SQRT1_2f  0.707106781186547524400844362104849039F /* 1/sqrt(2) */
 
 #define NPY_El        2.7182818284590452353602874713526625L /* e */
 #define NPY_LOG2El    1.4426950408889634073599246810018921L /* log_2 e */
@@ -87,6 +91,8 @@ NPY_INLINE static float __npy_nzerof(void)
 #define NPY_1_PIl     0.3183098861837906715377675267450287L /* 1/pi */
 #define NPY_2_PIl     0.6366197723675813430755350534900574L /* 2/pi */
 #define NPY_EULERl    0.5772156649015328606065120900824024L /* Euler constant */
+#define NPY_SQRT2l    1.41421356237309504880168872420969808L  /* sqrt(2) */
+#define NPY_SQRT1_2l  0.707106781186547524400844362104849039L /* 1/sqrt(2) */
 
 /*
  * C99 double math funcs
