Code coverage tests

This page documents the degree to which the PARI/GP source code is tested by our public test suite, distributed with the source distribution in directory src/test/. This is measured by the gcov utility; we then process gcov output using the lcov frond-end.

We test a few variants depending on Configure flags on the pari.math.u-bordeaux.fr machine (x86_64 architecture), and agregate them in the final report:

• with GMP kernel
• with GMP kernel using --mt=pthread
• with native kernel, including micro-assembler code
• with native kernel, without micro-assembler
• with native kernel, without micro-assembler, disabling GCC extensions (DISABLE_INLINE)
• with GMP kernel, emulating an x86_32 architecture at Configure time via setarch

The target is to exceed 90% coverage for all mathematical modules (given that branches depending on DEBUGLEVEL or DEBUGMEM are not covered). This script is run to produce the results below.

LCOV - code coverage report

Current view: top level - basemath - rootpol.c (source / functions) Hit Total Coverage Test: PARI/GP v2.18.1 lcov report (development 30673-b6380924e9) Lines: 1467 1530 95.9 % Date: 2026-02-08 09:23:25 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296182
RgX_gtofp_bit	7029552
RgX_normalize1	35733
X2XP1	5989775
ZX_Uspensky	1313714
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15204
ZX_graeffe	5390
ZX_realroots_irred	48567
ZX_rescale2prim	2233549
ZX_sturm	6395
ZX_sturm_i	122980
ZX_sturm_irred	116585
ZX_sturmpart	1128213
ZX_to_ZiX	16450530
ZiX_sqr	99019899
_gen_nored	11206686
_gen_one	14473612
_gen_zero	326031
_intervalcmp	0
_mp_add	24664363
_mp_cmul	34776616
_mp_mul	4374608
_mp_sqr	6298362
_mp_sub	0
_sqrtnr	22597
a_posteriori_errors	536989
abs_update	8004106
abs_update_r	778587
all_roots	535890
append_clone	1613579
bkeval_single_power	5235853
check_ab	1178842
checkbound	2354811
checkvalidpol	266892
clean_roots	535936
cleanroots	231763
cmp_complex_appr	2237358
conformal_basecase	1403553
conformal_mapping	467810
conformal_pol	1403671
dblexp	6547666
dbllog2	302094358
dft	502262
dual_modulus	1012252
eval_rel_pol	13135345
fft	14156490
fft2	7462
findpower	40949326
fix_roots	536988
fix_roots1	398359
fujiwara_bound	2271137
fujiwara_bound_real	1406687
graeffe	49502672
homothetie	1609723
homothetie2n	9955039
homothetie_gauss	36494683
ind_maxlog2	902475
initdft	996129
isexactpol	239753
isexactscalar	931714
isreal	961677
isvalidcoeff	1228149
logmax_modulus	4449769
logmin_modulus	1614417
logmodulus	606593
logpre_modulus	606592
logradius	493864
lower_bound	40949271
mydbllog2i	226405394
mydbllog2r	56172321
mydbllogr	9544972
mygprec	63746302
mygprec_absolute	4337728
mygprec_special	536998
mygprecrc	215138493
mygprecrc_special	2178356
myshiftic	135856664
myshiftrc	35498078
newton_polygon	5505667
optimize_split	493868
parameters	493867
pol_to_gaussint	17585109
polgraeffe	14
polmod_to_embed	84
polrootsbound	27132
polrootsbound_i	27125
polsolve	166689
quicktofp	6977146
realroots	50627
refine_F	502260
refine_H	2460066
root_error	1911697
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288390
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494229
split_0_1	468177
split_0_2	468177
split_1	467810
split_2	493867
split_complete	1525456
split_fromU	493868
split_pols	166692
splitcauchy	166700
splitpoleval	5235892
tocomplex	1213262
update_radius	493867
usp	1125897

Generated by: LCOV version 1.16