974c4fc768
problem is NaN() produces a SNaN, not a QNaN... and on the 387, storing 80 bit SNaN in register to a 64-bit memory destination traps. SNaN/QNaN encoding is machine specific. mips has the qiet/signaling bit inverted. disabling fp exception in main() now, but that sucks. i think the best solution would be to not even call strtod() in is_number() but just write a regex or a little state machine that will only accept numbers without nan and ±inf. that might even make it faster and is more robust than relying on the os's strtod() details. |
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