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-rw-r--r--src/mpfr.h6
1 files changed, 5 insertions, 1 deletions
diff --git a/src/mpfr.h b/src/mpfr.h
index 652eafd88..ee907d1e4 100644
--- a/src/mpfr.h
+++ b/src/mpfr.h
@@ -136,7 +136,11 @@ typedef enum {
/* Let's make mpfr_prec_t signed in order to avoid problems due to the
usual arithmetic conversions when mixing mpfr_prec_t and mpfr_exp_t
- in an expression (for error analysis) if casts are forgotten. */
+ in an expression (for error analysis) if casts are forgotten.
+ Note: mpfr_prec_t is currently limited to "long". This means that
+ under MS Windows, the precisions are limited to about 2^31; however,
+ these are already huge precisions, probably sufficient in practice
+ on this platform. */
#if _MPFR_PREC_FORMAT == 1
typedef short mpfr_prec_t;
typedef unsigned short mpfr_uprec_t;