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-rw-r--r--gnu/packages/maths.scm9
1 files changed, 8 insertions, 1 deletions
diff --git a/gnu/packages/maths.scm b/gnu/packages/maths.scm
index 0e6fda3758..9f10933a64 100644
--- a/gnu/packages/maths.scm
+++ b/gnu/packages/maths.scm
@@ -2189,7 +2189,14 @@ specifications.")
;; Pretend to be on a 64 bit platform to obtain a common directory
;; name for the build results on all architectures; nothing else
;; seems to depend on it.
- (("^PLATFORM=.*$") "PLATFORM=ux64\n")))))
+ (("^PLATFORM=.*$") "PLATFORM=ux64\n")
+
+ ;; The check for 'isnan' as it is written fails with
+ ;; "non-floating-point argument in call to function
+ ;; ‘__builtin_isnan’", which leads to the 'NOISNAN' cpp macro
+ ;; definition, which in turn leads to bad things. Fix the feature
+ ;; test.
+ (("isnan\\(0\\)") "isnan(0.)")))))
(build-system gnu-build-system)
(arguments
`(#:tests? #f ; no check target