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 30711-c92306d4b4) Lines: 1467 1530 95.9 % Date: 2026-02-25 09:24:21 Functions: 116 119 97.5 % Legend: Lines: hit not hit

Function Name	Hit count
FFT	56
FFT_i	98
FFTinv	56
QX_complex_roots	296183
RgX_gtofp_bit	7029396
RgX_normalize1	35731
X2XP1	5989955
ZX_Uspensky	1313703
ZX_Uspensky_equal	28
ZX_Uspensky_equal_yes	14
ZX_Uspensky_no	21
ZX_deg1root	15204
ZX_graeffe	5390
ZX_realroots_irred	48570
ZX_rescale2prim	2233621
ZX_sturm	6395
ZX_sturm_i	122978
ZX_sturm_irred	116583
ZX_sturmpart	1128199
ZX_to_ZiX	16449645
ZiX_sqr	99017307
_gen_nored	11208566
_gen_one	14473588
_gen_zero	326019
_intervalcmp	0
_mp_add	24665425
_mp_cmul	34779029
_mp_mul	4374738
_mp_sqr	6298521
_mp_sub	0
_sqrtnr	22597
a_posteriori_errors	536992
abs_update	8004227
abs_update_r	778575
all_roots	535891
append_clone	1613564
bkeval_single_power	5235582
check_ab	1178826
checkbound	2354782
checkvalidpol	266890
clean_roots	535939
cleanroots	231763
cmp_complex_appr	2237356
conformal_basecase	1403528
conformal_mapping	467802
conformal_pol	1403649
dblexp	6547507
dbllog2	302081747
dft	502246
dual_modulus	1012239
eval_rel_pol	13135007
fft	14155909
fft2	7462
findpower	40945812
fix_roots	536990
fix_roots1	398356
fujiwara_bound	2271119
fujiwara_bound_real	1406684
graeffe	49503838
homothetie	1609681
homothetie2n	9954896
homothetie_gauss	36492335
ind_maxlog2	902480
initdft	996102
isexactpol	239753
isexactscalar	931714
isreal	961663
isvalidcoeff	1228143
logmax_modulus	4449625
logmin_modulus	1614354
logmodulus	606579
logpre_modulus	606577
logradius	493852
lower_bound	40945976
mydbllog2i	226395806
mydbllog2r	56171681
mydbllogr	9545093
mygprec	63745222
mygprec_absolute	4337588
mygprec_special	536997
mygprecrc	215132381
mygprecrc_special	2178341
myshiftic	135860775
myshiftrc	35496682
newton_polygon	5505495
optimize_split	493859
parameters	493856
pol_to_gaussint	17584549
polgraeffe	14
polmod_to_embed	84
polrootsbound	27130
polrootsbound_i	27123
polsolve	166700
quicktofp	6977195
realroots	50627
refine_F	502245
refine_H	2460012
root_error	1911690
roots	8018
roots_aux	239781
roots_com	239753
rootsdeg0	42
scalepol	4288336
scalepol2n	0
sol_ok	3378
solve_exact_pol	231145
split_0	494222
split_0_1	468163
split_0_2	468164
split_1	467805
split_2	493855
split_complete	1525432
split_fromU	493858
split_pols	166696
splitcauchy	166704
splitpoleval	5235607
tocomplex	1213238
update_radius	493858
usp	1125940

Generated by: LCOV version 1.16