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implement cot as tan(pi/2 - angle)

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plasmacel
2014-11-21 04:29:35 +01:00
parent 7def337781
commit e637299192
1 changed files with 3 additions and 1 deletions
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4
glm/gtc/reciprocal.inl
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@@ -66,7 +66,9 @@ namespace glm
GLM_FUNC_QUALIFIER genType cot(genType angle) GLM_FUNC_QUALIFIER genType cot(genType angle)
{ {
GLM_STATIC_ASSERT(std::numeric_limits<genType>::is_iec559, "'cot' only accept floating-point values"); GLM_STATIC_ASSERT(std::numeric_limits<genType>::is_iec559, "'cot' only accept floating-point values");
return genType(1) / glm::tan(angle); genType const pi_over_2 = genType(3.1415926535897932384626433832795 / 2.0);
return glm::tan(pi_over_2 - angle);
} }
template <typename T, precision P, template <typename, precision> class vecType> template <typename T, precision P, template <typename, precision> class vecType>